DEREK HASELDEN'S ASTRONOMICAL LISTS AND TABLES, PAGE 2
Stars
Updated 26th November 2006
This page is one of a series of three composed almost entirely of data in tabulated form. It is the result of several years of occasionally, but progressively recording information gleaned from books, magazines and the internet. Almost any astronomical book you encounter these days will have some numerical data within its pages in some form or another. So, when I started writing a series of astronomy notes about 8 years ago I included a section which listed useful and interesting astronomical information.
Since starting that project it has been necessary to revise, update and expand some of those tables to reflect new data. For example, recent discoveries of additional moon's orbiting the gas giant planets has prompted me to revise those tables, almost tripling their size in the process. As and when I've found time new tables have sprung up or old ones combined to make up the set of tables on this page. Doubtless there will be others to follow!
The other two pages in this series are Astronomical Tables 1 - Solar System Objects, Miscellaneous and Astronomical Tables 3 - Deep Sky Objects.
I hope that you are able to make use of this page and the data within, you may well see something you've not come across before. Perhaps you'll even think of other information that would be useful! Furthermore, should you find any errors or know of more up to date figures please do let me know. Whatever the case, please feel free to comment or make suggestions. An e-mail link/button appears at the bottom of this page.
This page was written by Derek Haselden and is the result of many, many hours of digging through books, magazines, journals and other reading matter - and then typing and assembling it into the order you see below. As such I cannot claim it to be 'original' but I have put great deal a lot of work into this and while I am more than happy for others to make use of this page, the only condition I would make is that you ask for permission first. Otherwise, please feel free to edit, extract, uproot and quote as you see fit, but please, do not distort or mangle it too much. Feel free to copy, distribute, paraphrase, et cetera, et cetera, but do me the honour of quoting the writer and/or include a link to me.
Thanks.
Derek Haselden - Webmaster
A complete list of the tables on this page follows...
STARS.
OTHER PAGES BY DEREK HASELDEN.
TABLE 20. THE CONSTELLATIONS
English Genitive Abbr. Area Size
CONSTELLATION name name (sq.°) ranking
Andromeda Andromeda (Princess) Andromedae And 722 19
Antlia # The Air Pump Antliae Ant 239 62
Apus $ The Bird of Paradise Apodis Aps 206 67
Aquarius The Water Bearer Aquarii Aqr 980 10
Aquila The Eagle Aquilae Aql 652 22
Ara $ The Altar Arae Ara 237 63
Aries The Ram Arietis Ari 442 39
Auriga The Charioteer Aurigae Aur 657 21
Bootes The Herdsman Bootis Boo 907 13
Caelum # The Graving Tool Caeli Cae 125 81
Camelopardalis The Giraffe Camelopardalis Cam 757 18
Cancer The Crab Cancri Cnc 506 31
Canes Venatici The Hunting Dogs Canum Venaticorum CVn 465 38
Canis Major The Greater Dog Canis Majoris CMa 380 43
Canis Minor The Lesser Dog Canis Minoris CMi 183 71
Capricornus The Sea-Goat Capricorni Cap 414 40
Carina * $ The Keel Carinae Car 494 34
Cassiopeia Cassiopeia (Queen) Cassiopeiae Cas 598 25
Centaurus # The Centaur Centauri Cen 1060 9
Cepheus Cepheus (King) Cephei Cep 588 27
Cetus The Whale Ceti Cet 1231 4
Chamaeleon $ The Chamaeleon Chamaeleontis Cha 132 79
Circinus $ The Compasses Circini Cir 93 85
Columba # The Dove Columbae Col 270 54
Coma Berenices Berenice's Hair Comae Berenices Com 386 42
Corona Australis # The Southern Crown Coronae Australis CrA 128 80
Corona Borealis The Northern Crown Coronae Borealis CrB 179 73
Corvus The Crow Corvi Crv 184 70
Crater The Cup Crateris Crt 282 53
Crux $ The Cross Crucis Cru 68 88
Cygnus The Swan Cygni Cyg 804 16
Delphinus The Dolphin Delphini Del 189 69
Dorado $ The Goldfish Doradus Dor 179 72
Draco The Dragon Draconis Dra 1083 8
Equuleus The Little Horse Equulei Equ 72 87
Eridanus # The River Eridanus Eridani Eri 1138 6
Fornax # The Furnace Fornacis For 398 41
Gemini The Twins Geminorium Gem 514 30
Grus # The Crane Gruis Gru 366 45
Hercules Hercules Herculis Her 1225 5
Horologium $ The Pendulum Clock Horologii Hor 249 58
Hydra The Water-Snake Hydrae Hya 1303 1
Hydrus $ The Small Water-Snake Hydri Hyi 243 61
Indus $ The Indian Indi Ind 294 49
Lacerta The Lizard Lacertae Lac 201 68
Leo The Lion Leonis Leo 947 12
Leo Minor The Smaller Lion Leonis Minoris LMi 232 64
Lepus The Hare Leporis Lep 290 51
Libra The Scales Librae Lib 528 29
Lupus # The Wolf Lupi Lup 334 46
Lynx The Lynx Lyncis Lyn 545 28
Lyra The Lyre Lyrae Lyr 286 52
Mensa $ The Table (Mountain) Mensae Men 153 75
Microscopium # The Microscope Microscopii Mic 210 66
Monoceros The Unicorn Monocerotis Mon 482 35
Musca $ The Fly Muscae Mus 138 77
Norma $ The Level Normae Nor 165 74
Octans $ The Octant Octanis Oct 291 50
Ophiuchus The Serpent-Holder Ophiuchi Oph 948 11
Orion Orion (the Hunter) Orionis Ori 594 26
Pavo $ The Peacock Pavonis Pav 378 44
Pegasus Pegasus Pegasi Peg 1121 7
Perseus Perseus Persei Per 615 24
Pheonix $ The Pheonix Pheonicis Phe 469 37
Pictor $ The Painter Pictoris Pic 247 59
Pisces The Fish Piscium Psc 889 14
Pisces Australis The Southern Fish Piscis Australis PsA 245 60
Puppis * # The Stern Puppis Pup 673 20
Pyxis # The Mariner's Compass Pyxidis Pyx 221 65
Reticulum $ The Net Reticuli Ret 114 82
Sagitta The Arrow Sagittae Sge 80 86
Sagittarius # The Archer Sagittarii Sgr 867 15
Scorpius # The Scorpion Scorpii Sco 497 33
Sculptor # The Sculptor Sculptoris Scl 475 36
Scutum The Shield Scuti Sct 109 84
Serpens The Serpent Serpentis Ser 637 23
Sextans The Sextant Sextantis Sex 314 47
Taurus The Bull Tauri Tau 797 17
Telescopium $ The Telescope Telescopii Tel 252 57
Triangulum The Triangle Trianguli Tri 132 78
Triangulum Australis $ The Southern Triangle Trianguli Australis TrA 110 83
Tucana $ The Toucan Tucanae Tuc 295 48
Ursa Major The Great Bear Ursae Majoris UMa 1280 3
Ursa Minor The Little Bear Ursae Minoris UMi 256 56
Vela * $ The Sails Velorum Vel 500 32
Virgo The Virgin Virginis Vir 1294 2
Volans $ The Flying Fish Volantis Vol 141 76
Vulpecula The Fox Vulpeculae Vul 268 55
CONSTELLATION English Genitive Abbr. Area Size
name name (sq.°) ranking
Notes:
* Part of the old constellation Argo Navis.
# Parts visible from the UK.
$ Never visible from the UK.
TABLE 21. THE 34 NEAREST STARS
R.A. Dec. Magnitude Magnitude Spectral Distance Solar
STAR h m ° ' Visual Absolute Class (l.y.) Luminosities
The Sun Sol # - - -26.72 4.8 G2 V - 1.0
Proxima Centauri (1) 14 29.7 -62 41 11.05v 15.5 dM5.5 eV 4.2 0.00006
alpha Centauri A # 14 39.6 -60 50 -0.01 4.4 G2 V 4.3 1.6
alpha Centauri B - - 1.33 5.7 K0 V 4.3 0.45
Barnard's Star (2) 17 57.8 +04 34 9.54 13.2 M5 V 6.0 0.00045
Wolf 359 (3) 10 56.6 +07 01 13.53v 16.7 dM8 eV 7.7 0.00002
Lalande 21185 (4) 11 03.3 +35 58 7.5 10.5 M2.1 V 8.2 0.0055
UV Ceti A 01 38.8 -17 57 12.52v 15.5 dM5.6 V 8.4 0.00006
UV Ceti B (5) - - 13.03v 16.0 dM5.6 V 8.4 0.00004
Sirius A # 06 45.1 -16 43 -1.46 1.42 A1 V 8.6 26.0
Sirius B - - 8.3 11.2 DA VII 8.6 0.003
Ross 154 18 49.8 -22 50 10.45 13.13 dM5 eV 9.4 0.00048
Ross 248 23 41.9 +44 10 12.29 14.78 dM6 eV 10.4 0.00011
epsilon Eridani # 03 32.9 -09 28 3.73 6.14 K2 V 10.8 0.30
Ross 128 11 47.8 +00 48 11.10 13.47 dM5 V 10.9 0.00036
61 Cygni A # 21 06.9 +38 45 5.22v 7.6 K3.5 V 11.1 0.082
61 Cygni B - - 6.03 8.4 K4.7 V 11.1 0.039
epsilon Indi # 22 03.4 -56 47 4.68 7.0 K3 V 11.2 0.14
BD+43°44 A 00 18.5 +44 01 8.08 10.4 M1.3 V 11.2 0.0061
BD+43°44 B - - 11.06 13.4 M3.8 V 11.2 0.00039
Luyten 789-6 22 38.5 -15 19 12.18 14.5 dM7 e 11.2 0.00014
Procyon A # 07 39.3 +05 13 0.38 2.6 F5 IV-V 11.4 7.0
Procyon B - - 10.7 13.0 DF 11.4 0.00055
BD+59°1915 A 18 43.1 +59 38 8.90 11.2 M3.0 V 11.6 0.003
BD+59°1915 B - - 9.69 11.9 M3.5 V 11.6 0.0015
Lacaille 9352 (6) 23 05.9 -35 51 7.35 9.6 M1.3 Ve 11.7 0.013
Gliese 51-15 08 26.8 +26 57 14.81 17.03 M? 11.7 0.00001
tau Ceti # 01 41.7 -16 12 3.5 5.72 G8 V 11.8 0.45
Luyten's Star 07 24.7 +05 29 9.82 11.94 dM5 V 12.3 0.0015
L 725-32 01 09.8 -17 16 12.04 14.12 dM5 e 12.5 0.0002
Lacaille 8760 (7) 21 14.3 -36 09 6.66 8.74 M0 V 12.6 0.026
Kapteyn's Star 05 09.7 -45 00 8.84 10.88 sdM0 pec 12.7 0.0039
Kruger 60 A 22 26.3 +57 27 9.85 11.87 dM3 V 12.9 0.0016
Kruger 60 B - - 11.3 13.3 dM5 e 12.9 0.0004
STAR R.A. Dec. Magnitude Magnitude Spectral Distance Solar
h m ° ' Visual Absolute Class (l.y.) Luminosities
Notes:
v = variable.
d = dwarf.
e = emission lines.
pec = peculiar spectrum.
# = visible to the naked eye.
1. Proxima is also known as V645 Centauri.
2. Barnard's Star is also known as Munich 15040.
3. Wolf 359 is also known as CN Leonis.
4. Lalande 21185 is also known as BD+36° 2147.
5. UV Ceti B is sometimes referred to as Luytens' Flare Star.
6. Lacaille 9352 is also known as CoD-36°15693.
7. Lacaille 8760 is also known as CoD-39°14192.
TABLE 22. THE 100 BRIGHTEST STARS
R.A. Dec. Magnitude Spectral Distance Solar
STAR CON NAME h m ° ' Vis. Abs. Class (l.y) Lum.
The Sun - Sol # - - -26.72 4.8 G2 V - 1.0
alpha CMa Sirius # 06 45.1 -16 43 -1.46 1.4 A1 V 8.6 26
alpha Car Canopus 06 24.0 -52 42 -0.72 -2.5 F0 I 1 200 200 000
alpha Cen Rigel Kent 14 39.6 -60 50 -0.27 4.1 G2 V 4.3 1.7
alpha Boo Arcturus # 14 15.7 +19 11 -0.04 0.2 K1 III 34 115
alpha Lyr Vega # 18 36.9 +38 47 0.03 0.6 A0 V 25 52
alpha Aur Capella # 05 16.7 +46 00 0.08d 0.4 G6 41 90.0
beta Ori Rigel # 05 14.5 -08 12 0.12 -8.1 B8 I 1 400 60 000
alpha CMi Procyon # 07 39.3 +05 13 0.38 2.6 F5 IV-V 11.4 7.0
alpha Eri Achernar 01 37.7 -57 14 0.46 -1.3 B3 V 69 400
alpha Ori Betelgeuse # 05 55.2 +07 24 0.50v -7.2 M2 I 1 400 15 000
beta Cen Agena 14 03.8 -60 22 0.61v -4.4 B1 II 320 10 500
alpha Aql Altair # 19 50.8 +08 52 0.77 2.3 A7 V 16 10
alpha Cru Acrux 12 26.6 -63 06 0.83d -4.6 B0 IV 510 3200
alpha Tau Aldebaran # 04 35.9 +16 31 0.85v -0.3 K5 III 60 100
alpha Sco Antares # 16 29.4 -26 26 0.96v -5.2 M1 I 520 7 500
alpha Vir Spica # 13 25.2 -11 10 0.98v -3.2 B1 V 220 2 100
beta Gem Pollux # 07 45.3 +28 01 1.14 0.7 K0 III 40 60
alpha PsA Formalhaut # 22 57.6 -29 37 1.16 2.0 A3 V 22 13
alpha Cyg Deneb # 20 41.4 +45 17 1.25 -7.2 A2 Ia 1 500 70 000
beta Cru Becrux 12 47.7 -59 41 1.25v -4.7 B0 III 460 8 200
alpha Leo Regulus # 10 08.4 +11 58 1.35 -0.3 B7 Vn 69 130
epsilon CMa Adhara # 06 58.6 -28 58 1.50 -4.8 B2 II 570 5 000
alpha Gem Castor # 07 34.6 +31 53 1.57d 0.5 A1 V 49 45
gamma Cru Gacrux 12 31.2 -57 07 1.63v -1.2 M3 III 120 160
lambda Sco Shaula # 17 33.6 -37 06 1.63v -3.5 B1 IV 330 1 300
gamma Ori Bellatrix # 05 25.1 +06 20 1.64 -3.6 B2 IV 220 360
beta Tau Al Nath # 05 26.4 +28 36 1.65 -1.6 B7 IV 400 130
beta Car Miaplacidus 09 13.2 -69 43 1.68 -0.6 A0 IV 130 85
epsilon Ori Alnilam # 05 36.2 -01 12 1.70 -6.2 B0 I 1 200 23 000
alpha Gru Alnair 22 08.2 -46 57 1.74 -1.1 B5 III 68 230
zeta Ori Alnitak # 05 40.7 -01 56 1.77 -5.9 O9 I 1 100 19 000
epsilon UMa Alioth # 12 54.0 +55 57 1.77v 0.2 A0 IV 62 60
gamma Vel Regor 08 09.5 -47 20 1.78 -4.1 WC 7 520 3 800
alpha UMa Dubhe # 11 03.7 +61 45 1.79 0.2 K0 IV 75 60
alpha Per Mirphak # 03 24.4 +49 51 1.80 -4.6 F5 III 620 6 000
epsilon Sag Kaus Australis # 18 24.2 -34 23 1.85 -0.3 B9 IV 85 110
delta CMa Wezea # 07 08.4 -26 23 1.86 -8.0 F8 I 3 060 132 000
epsilon Car Avior 08 22.5 -59 30 1.86 -2.1 K0 III 200 600
eta UMa Alkaid # 13 47.5 +49 18 1.86 -1.7 B3 III 108 450
theta Sco Sargas 17 37.4 -42 59 1.87 -5.6 F0 II 900 14 000
beta Aur Menkarlina # 05 59.5 +44 56 1.90 0.6 A2 IV 46 50
alpha TrA Atria 16 48.6 -69 01 1.92 -0.1 K2 IV 55 96
gamma Gem Alhema # 06 37.7 +16 23 1.93 0.0 A0 IV 85 82
alpha Pav - 20 25.6 -56 44 1.94 -2.3 B3 III 230 700
delta Vel Koo She 08 44.7 -54 42 1.96 0.6 A0 IV 68 50
alpha Hyd Alphard # 09 27.6 +02 18 1.98 -0.2 K3 IV 65 105
beta CMa Mirzam # 06 22.6 -17 57 1.98v -4.8 B1 I 720 7 200
gamma Leo Algieba # 10 19.9 +19 50 1.99d 0.2 K0 IV 90 60
alpha UMi Polaris # 02 31.8 +89 15 1.99v -4.6 F8 III 680 6 000
alpha Ari Hamal # 02 07.2 +23 27 2.00 -0.1 K2 IV 85 96
sigma Sgr Nunki # 18 55.2 -26 17 2.02 -2.0 B2.5 V 209 525
beta Cet Diphda # 00 43.6 -17 59 2.04 0.2 G9.5 V 68 60
alpha And Alpheratz # 00 08.4 +29 05 2.06 -0.1 B8 IV 72 96
beta And Mirach # 01 10.7 +35 37 2.06 -0.4 M0 IIIa 88 115
theta Cen Haratan # 14 07.7 -36 22 2.06 1.7 K0 IIIb 46 17
kappa Ori Saiph # 05 47.7 -09 40 2.06 -6.9 B0.5 Ia 2 100 49 000
alpha Oph Rasalhague # 17 34.9 +12 33 2.08 0.3 A5 III 62 58
beta UMi Kocab # 14 50.7 +74 09 2.08 -0.3 K4 III 95 110
zeta UMa Mizar # 13 23.9 +54 55 2.09d 0.4 A2 V 59 56
beta Gru Al Dhanab 22 42.6 -46 53 2.11v -2.4 M5 III 173 800
beta Per Algol # 03 08.2 +40 57 2.12v -0.2 B8 V 95 105
beta Leo Denebola # 11 49.1 +14 34 2.14 1.7 A3 V 39 17
gamma Cen Menkent # 12 41.5 -48 57 2.17 -0.6 A1 IV 110 130
gamma And Almaak # 02 03.9 +42 19 2.18d -0.1 K3 IIb 121 95
gamma Cas Cih # 00 56.7 +60 43 2.20v -4.6 B0 IVe 780 6 000v
gamma Cyg Sadr # 20 22.2 +40 15 2.20 -4.6 F8 Ib 750 6 000
lambda Vel Al Suhail al Wazn 09 07.9 -43 26 2.21v -4.4 K4.5 II 490 5 000
alpha Cas Shedir # 00 40.5 +56 32 2.23v -0.9 K0 IIIe 120 200
alpha CrB Alphekka # 15 34.7 +26 43 2.23v 0.6 A0 V 78 130
delta Ori Mintaka # 05 32.0 -00 18 2.23v -6.1 O9.5 II 2 350 22 000
gamma Dra Eltamin # 17 56.6 +51 29 2.23 -0.3 K5 III 101 110
iota Car Tureis 09 17.1 -59 16 2.25 -4.7 A8 Ib 800 7 500
zeta Pup Suhail Hadar 08 03.6 -40 00 2.25 -7.1 O5.8f 2 400 60 000
beta Cas Chaph # 00 09.2 +59 09 2.27 1.9 F2 III 42 14
epsilon Sco Wei # 16 50.5 -34 17 2.29 -0.1 K2.5 III 65 96
epsilon Cen - 12 51.1 -48 56 2.30 -0.1 B1 III 490 2 100
alpha Lup Men 14 41.9 -47 23 2.30 -4.4 B1.5 III 6 800 5 000
eta Cen - 14 35.5 -42 09 2.31v -2.9 B1.5 V 360 1 200
delta Sco Dshubba # 16 00.3 -22 37 2.32 -4.1 B0.3 IV 550 3 800
epsilon Boo Izar # 14 45.0 +27 04 2.37 -0.9 K0 II 150 200
beta UMa Merak # 11 01.8 +56 23 2.37 1.2 A1 V 62 28
epsilon Peg Enif # 21 44.2 +09 52 2.38 -4.4 K2 Ib 520 5 000
alpha Phe Ankaa 00 26.3 -42 18 2.39 0.2 K0 III 78 60
beta Peg Scheat # 23 03.8 +28 05 2.40v -1.4v M2.5 II 176 310v
kappa Sco Girtab 17 42.5 -39 02 2.41 -3.0 B1.5 III 390 1 300
eta Oph Sabik # 17 10.4 -15 43 2.43 1.4 A2 V 59 26
eta CMa Aludra # 07 24.1 -29 18 2.44 -7.0 B5 Ia 2 500 52 500
alpha Cep Alderamin # 21 18.6 +62 35 2.44 1.9 A7 V 46 14
gamma UMa Phad # 11 53.8 +53 41 2.44 0.6 A0 Ve 75 50
epsilon Cyg Gienah # 20 46.2 +33 58 2.46 0.2 K0 III 81 60
alpha Peg Markab # 23 04.8 +15 12 2.49 0.2 B9 V 100 60
kappa Vel Markeb 09 22.1 -55 00 2.50 -3.0 B2 IV 390 1 320
alpha Cet Menkar # 03 02.3 +04 05 2.53 -0.5 M1.5 IIIa 130 120
zeta Cen Al Nair al Kentaurus 13 55.5 -47 17 2.55 -3.0 B2.5 IV 360 1 300
delta Leo Zosma # 11 14.1 +20 31 2.56 1.9 A4 V 52 14
zeta Oph Han # 16 37.2 -10 34 2.56 -4.4 O9.5 V 550 5 000
alpha Lep Arneb # 05 32.7 -17 49 2.58 -4.7 F0 Ib 945 7 500
gamma Crv Minkar # 12 15.8 -17 32 2.59 -1.2 K2.5 IIIa 185 250
zeta Sgr Ascella # 19 02.6 -29 53 2.59 0.6 A2 III 78 50
R.A. Dec. Magnitude Spectral Distance Solar
STAR CON NAME h m ° ' Vis. Abs. Class (l.y) Lum.
Notes:
v = variable.
d = double star.
# = visible from southern UK.
TABLE 23. STARS - SPECTRAL CLASSES AND PHYSICAL PARAMETERS
Main Sequence Dwarfs (V)
Spectral Absolute Surface Solar Solar Solar Density Class Magnitude Temp.(°K) Masses Diameters Luminosities (kg/m3) O5 -5.7 44 500 60 12 790 000 0.04 B0 -4.0 30 000 17.5 7.4 52 000 0.06 B5 -1.2 15 400 5.9 3.9 830 0.14 A0 +0.6 9 520 2.9 2.4 54 0.28 A5 +1.9 8 200 2.0 1.7 14 0.56 F0 +2.7 7 200 1.6 1.5 6.5 0.71 F5 +3.4 6 580 1.3 1.2 2.5 1.07 G0 +4.4 6 030 1.1 1.05 1.26 1.3 G5 +5.1 5 520 0.93 0.93 0.79 1.6 K0 +5.9 4 900 0.78 0.85 0.40 1.8 K5 +7.3 4 130 0.69 0.74 0.16 2.4 M0 +9.0 3 480 0.47 0.63 0.063 2.5 M5 +11.8 2 800 0.21 0.32 0.008 10 M8 +16.0 2 400 0.10 0.13 0.0008 63 Spectral Absolute Surface Solar Solar Solar Density Class Magnitude Temp.(°K) Masses Diameters Luminosities (kg/m3)
Giants (III)
Spectral Absolute Surface Solar Solar Solar Density Class Magnitude Temp.(°K) Masses Diameters Luminosities (kg/m3) O5 -5.5 40 000 50 20 20 000 0.001 B0 -5.0 30 000 20 15 8 500 0.008 B5 -2.2 15 000 7 8 650 0.02 A0 +0.0 10 000 4 5 85 0.04 A5 +0.7 8 000 3 4 45 0.03 F0 +1.5 7 000 2 4 20 0.02 F5 +1.6 6 500 1.5 5 20 0.015 G0 +1.1 5 750 1.5 6.3 30 0.01 G5 +0.7 5 000 2.0 10 45 0.003 K0 +0.5 4 500 2.5 15 55 0.0013 K5 -0.2 3 800 5.0 25 200 0.0004 M0 -0.4 3 200 6.3 40 400 0.0001 M5 -0.8 2 800 7 65 1 000 0.00005 Spectral Absolute Surface Solar Solar Solar Density Class Magnitude Temp.(°K) Masses Diameters Luminosities (kg/m3)
Supergiants (I)
Spectral Absolute Surface Solar Solar Solar Density Class Magnitude Temp.(°K) Masses Diameters Luminosities (kg/m3) O5 -6.8 40 000 100 30 45 000 0.005 B0 -6.4 30 000 35 25 30 000 0.003 B5 -6.2 14 000 25 40 25 000 0.0005 A0 -6.3 10 000 16 50 28 000 0.0002 A5 -6.6 8 500 13 60 37 500 0.00008 F0 -6.6 7 500 12.5 70 37 500 0.00005 F5 -6.6 7 000 10 85 37 500 0.00002 G0 -6.4 5 500 10 110 30 000 0.000013 G5 -6.2 4 850 12 135 25 000 0.000007 K0 -6.0 4 250 13 200 20 000 0.000002 K5 -5.8 3 750 14 400 18 000 0.0000003 M0 -5.6 3 200 16 500 15 000 0.00000015 M5 -5.6 2 800 20 800 15 000 0.00000005 Spectral Absolute Surface Solar Solar Solar Density Class Magnitude Temp.(°K) Masses Diameters Luminosities (kg/m3)
TABLE 24. STARS - SPECTRAL CLASSIFICATION
CLASS COLOUR SURFACE TEMP.¹ ABSORPTION LINES PRESENT O Blue/white 50 000 - 32 000°K Ionised helium, neutral helium, weak hydrogen. B Blue/white 30 000 - 10 000°K Neutral helium, strengthened hydrogen. A White 9 500 - 7 200°K Strong hydrogen, ionised calcium appears. F Yellow/white 7 000 - 6 000°K Increased calcium, weak hydrogen, neutral elements strengthen. G Yellow 5 900 - 5 300°K Strong calcium, weak hydrogen, neutral metals, iron, calcium present. K Orange 5 200 - 4 000°K Strong neutral metals, molecular bands appear. M Orange/red 3 900 - 2 000°K Strong titanium oxide lines, many metallic lines appear. L² Red/infrared 2 000 - 1 500°K Metallic hydrides, alkali metals prominent. T² Infrared 1 000°K Methane bands prominent. S³ Red 3 600 - 2 000°K Intermediate molecular carbon content, zirconium oxide replaces titanium oxide. R³ Orange/red 5 000 - 3 600°K Prominent molecular carbon, CN and CH. N³ Deep red 3 500 - 2 000°K Cool carbon star with strong molecular carbon, CN and CH. C³ Orange - red 5 000 - 2 000°K Combined classes R and N.
Notes:
¹ Dwarf star temperature scale (except for classes S, R, N, C).
² Classes added in 1999.
³ Giant stars only.
TABLE 25. STARS - LUMINOSITY CLASSES (MK SYSTEM)
CLASS STAR TYPE O¹ Extremely luminous hypergiants, so far seen only in the Magellanic Clouds and the Galaxy. Ia Luminous supergiants. Ib Lower luminosity supergiants. II Bright giants. III Ordinary giants. IV Subgiants. V Dwarfs (mostly main-sequence stars). VI² Subdwarfs. VII² White dwarfs.
Notes:
¹ Arabic O, not Roman, now a standard letter but added to the system later.
² Not a standard part of the MK system but often used anyway.
TABLE 26. 115 VARIABLE STARS
This list of variable stars, like the list of double stars below, can hardly be thought of as the last word in variable star lists. But, it does provide a good spread of the most common variable star types over a wide range of magnitudes - from -0.8 to +15.0 magnitude. The list is made up in order of the variable star's maximum brightness.
Letter Con. Name R.A. Dec Range Type Period Spectrum - - - h m ° ' (Mag.) (d) eta Car - 10 45.1 -59 41 -0.8 - 7.9 Irregular ? Pec. alpha Ori Betelgeuse 05 55.2 +07 24 0.1 - 0.9 Semi-regular 2110 M gamma Cas Cih 00 56.7 +60 43 1.6 - 3.3 Irregular ? B omicron Cet Mira 02 19.3 -02 59 1.7 - 10.1 Mira 332.0 M T CrB - 15 59.5 +25 55 2.0 - 10.8 Recurrent nova ? M+Q (Note 1) beta Per Algol 03 08.2 +40 57 2.1 - 3.4 Algol 2.87 B+G beta Peg Scheat 23 03.8 +28 05 2.3 - 2.8 Semi-regular 38 M L² Pup - 07 13.5 -44 49 2.6 - 6.2 Semi-regular 140 M mu Cen - 13 49.6 +42 28 2.9 - 3.5 Irregular ? B epsilon Aur Almaaz 05 02.0 +43 49 2.9 - 3.8 Eclipsing 9892 F alpha Her Rasalgethi 17 14.6 +14 23 3.0 - 4.0 Semi-regular c.100 M rho Per Gorgonea Terti 03 05.2 +38 50 3.0 - 4.0 semi-regular 33-55 M P Cyg - 20 17.8 +38 02 3.0 - 6.0 Irregular ? Bp eta Gem Propus 06 14.9 +22 30 3.2 - 3.9 Semi-regular 223 M lambda Tau - 04 00.7 +12 29 3.3 - 3.8 Algol 3.95 B+A ZZ Car - 09 45.2 -62 30 3.3 - 4.2 Cepheid 35.53 F-K beta Lyr Sheliak 18 50.1 +33 22 3.3 - 4.3 Beta Lyrae 12.94 B+A chi Cyg - 19 50.6 +32 55 3.3 - 14.2 Mira 406.9 S lambda Pav - 18 52.2 -62 11 3.4 - 4.3 Irregular ? B mu Cep Garnet Star 21 43.5 +58 47 3.4 - 5.1 Irregular ? M eta Aql - 19 52.5 +01 00 3.5 - 4.4 Cepheid 7.18 F-G delta Cep - 22 29.2 +58 25 3.5 - 4.4 Cepheid 5.37 F-G zeta Phe - 01 08.4 -46 43 3.6 - 4.1 Algol 1.67 B+B zeta Aur Sadatoni 05 02.5 +41 05 3.7 - 4.1 Eclipsing 972.1 K+B beta Dor - 05 33.6 -62 29 3.7 - 4.1 Cepheid 9.84 F-G zeta Gem Mekbuda 07 04.1 +20 34 3.7 - 4.1 Cepheid 10.15 F-G HR Del - 20 42.3 +19 10 3.7 - 12.7 Nova ? Q kappa Pav - 18 56.9 -67 14 3.9 - 4.7 W Virginis 9.09 F R Lyr - 18 55.3 +43 57 3.9 - 5.0 Semi-regular 46 M R Car - 09 32.2 -62 47 3.9 - 10.5 Mira 308.7 M S Mon - 06 41.0 +09 54 4.0 - 5.0 Irregular ? O7 UW CMa - 07 18.4 -24 34 4.0 - 5.3 Beta Lyrae 4.39 O7 R Hya - 13 29.7 -23 17 4.0 - 10.0 Mira 389.6 M rho Cas - 23 54.4 +58 30 4.1 - 6.2 ? ? F-K X Sgr - 17 47.6 -27 50 4.2 - 4.8 Cepheid 7.01 F chi Oph - 16 27.0 -18 27 4.2 - 5.0 Irregular ? B W Sgr - 18 05.0 -29 35 4.3 - 5.1 Cepheid 7.59 F-G R Sct - 18 47.5 -05 42 4.4 - 8.2 RV Tauri 140 G-K R Leo - 09 47.6 +11 25 4.4 - 11.3 Mira 312.4 M S Car - 10 09.4 -61 33 4.5 - 9.9 Mira 149.5 K-M u (68) Her - 17 17.3 +35 06 4.6 - 5.3 Beta Lyrae 2.05 B+B TV Psc - 00 28.0 +17 24 4.6 - 5.4 Semi-regular 70 M delta Pic - 06 10.3 -54 58 4.7 - 4.9 Beta Lyrae 1.67 B V Pup - 07 58.2 -49 15 4.7 - 5.2 Beta Lyrae 1.45 B+B W Boo - 14 43.4 +26 32 4.7 - 5.4 Semi-regular 450 M R Cas - 23 58.4 +51 24 4.7 - 13.5 Mira 430.5 M R Hor - 02 53.9 -49 53 4.7 - 14.3 Mira 404.0 M VZ Cam - 07 31.1 +82 25 4.8 - 5.2 Semi-regular 24 M VV Cep - 21 56.7 +63 38 4.8 - 5.4 Eclipsing 7430 M+B BU Tau Pleione 03 49.2 +24 08 4.8 - 5.5 Irregular - Bp U Hya - 10 37.6 -13 23 4.8 - 5.8 Semi-regular 450 N R Dor - 04 36.8 -62 05 4.8 - 6.6 Semi-regular 338 M U Ori - 05 55.8 +20 10 4.8 - 12.6 Mira 372.4 M epsilon Oct - 22 20.0 -80 26 4.9 - 5.4 Semi-regular 55 M delta Lib - 15 01.1 -08 31 4.9 - 5.9 Algol 2.33 B d Ser - 18 27.2 +00 12 4.9 - 5.9 ? ? G+A sigma Cir - 14 56.7 -62 47 5.0 - 5.4 Irregular ? B T Cyg - 20 47.2 +34 22 5.0 - 5.5 Irregular ? K RT Aur - 06 28.6 +30 30 5.0 - 5.8 Cepheid 3.73 F-G T Cet - 00 21.8 -20 03 5.0 - 6.9 Semi-regular 159 M RX Lep - 05 11.4 -11 51 5.0 - 7.0 Irregular ? M W Cyg - 21 36.0 +45 22 5.0 - 7.6 Semi-regular 126 M RR Sco - 17 03.5 -36 55 5.0 - 12.4 Mira 279.4 M UU Aur - 06 36.5 +38 27 5.1 - 6.8 Semi-regular 234 N R Ser - 15 50.7 +15 08 5.1 - 14.4 Mira 356.4 M T Cep - 21 09.5 +68 29 5.2 - 11.3 Mira 388.1 M S Sge - 19 56.0 +16 38 5.3 - 6.0 Cepheid 8.38 F-G FS Com - 13 06.4 +22 37 5.3 - 6.1 Semi-regular 58 M R Cen - 14 16.6 +59 55 5.3 - 11.8 Mira 546.2 M RS Oph - 17 50.2 -06 43 5.3 - 12.3 Recurrent nova - O+M (Note 2) GG Lup - 15 18.9 -40 47 5.4 - 6.0 Beta Lyrae 2.16 B+A SX Pav - 21 28.7 -69 30 5.4 - 6.0 Semi-regular 50 M T Vul - 20 51.5 +28 15 5.4 - 6.1 Cepheid 4.44 F-G Y Sgr - 18 21.4 -18 52 5.4 - 6.1 Cepheid 5.77 F pi¹ Gru - 22 22.7 -45 57 5.4 - 6.7 Semi-regular 150 S R Tri - 02 37.0 +34 16 5.4 - 12.6 Mira 266.5 M AH Vel - 08 12.0 -46 39 5.5 - 5.9 Cepheid 4.23 F T Cen - 13 41.8 +33 36 5.5 - 9.0 Semi-regular 60 K-M R Lep - 04 59.6 -14 48 5.5 - 11.7 Mira 432.1 N R Aql - 19 06.4 +08 14 5.5 - 12.0 Mira 284.2 M S Scl - 00 15.4 -32 03 5.5 - 13.6 Mira 365.3 M RR Lyn - 06 26.4 +56 17 5.6 - 6.0 Algol 9.95 A AX Cir - 14 52.6 -63 49 5.6 - 6.1 Cepheid 5.27 F-G TU CVn - 12 54.9 +47 12 5.6 - 6.6 Semi-regular 50 M X Can - 08 55.4 +17 14 5.6 - 7.5 Semi-regular 195 N RY Dra - 12 56.4 +66 00 5.6 - 8.0 Semi-regular 173 N RR Sgr - 19 55.9 -29 11 5.6 - 14.0 Mira 334.6 M SU Cas - 02 52.0 +68 53 5.7 - 6.2 Cepheid 1.95 F R Cma - 07 19.5 -16 24 5.7 - 6.3 Algol 1.14 F U Ant - 10 35.2 -39 34 5.7 - 6.8 Irregular ? N U Car - 10 57.8 -59 44 5.7 - 7.0 Cepheid 38.77 F-G g (30) Her - 16 28.6 +41 53 5.7 - 7.2 Semi-regular 70 M BU Gem - 06 12.3 +22 54 5.7 - 7.5 Irregular ? M U Del - 20 45.5 +18 05 5.7 - 7.6 Semi-regular 110 M Y Pav - 21 24.3 +69 44 5.7 - 8.5 Semi-regular 233 N R CrB - 15 48.6 +28 09 5.7 - 15.0 R CrB ? F8p WW Aur - 06 32.5 +38 27 5.8 - 6.5 Algol 2.53 A+A EU Del - 20 37.9 +18 16 5.8 - 6.9 Semi-regular 59 M R Scl - 01 27.0 -32 33 5.8 - 7.7 Semi-regular 370 N R Aqr - 23 43.8 -15 17 5.8 - 12.4 Symbiotic 387 M+Pec S CrB - 15 21.4 +31 22 5.8 - 14.1 Mira 360.3 M R And - 00 24.0 +38 35 5.8 - 14.9 Mira 409.3 S S Mus - 12 12.9 -70 09 5.9 - 6.4 Cepheid 9.66 F Y Oph - 17 52.6 -06 09 5.9 - 6.4 Cepheid 17.12 F-G VY UMa - 10 45.7 +67 25 5.9 - 6.5 Irregular ? N U Oph - 17 16.5 +01 13 5.9 - 6.6 Algol 1.68 B+B R Mus - 12 42.1 -69 24 5.9 - 6.7 Cepheid 7.48 F HU Tau - 04 38.3 +20 41 5.9 - 6.7 Algol 2.06 A X Cyg - 20 43.4 +35 35 5.9 - 6.9 Cepheid 16.39 F-G UX Dra - 19 21.6 +76 34 5.9 - 7.1 Semi-regular 168 N CK Ori - 05 30.3 +04 12 5.9 - 7.1 Semi-regular 120 K W Ori - 05 05.4 +01 11 5.9 - 7.7 Semi-regular 212 N TU Tau - 05 45.2 +24 25 5.9 - 8.6 Semi-regular 190 N X Oph - 18 38.3 +08 50 5.9 - 9.2 Mira 334.4 M+K U Cyg - 20 19.6 +47 54 5.9 - 12.1 Mira 462.4 N Letter Con. Name R.A. Dec Range Type Period Spectrum - - - h m ° ' (Mag.) (d)
Notes: All co-ordinates are epoch 2000.0.
1. Outbursts in 1866, 1946.
2. Outbursts in 1933, 1958, 1987.
TABLE 27. 98 DOUBLE (MULTIPLE) STARS
This is not the most definitive list of double stars going but it does provide a sample of the great complexity of some star systems. The list is made up in order of the magnitude of the primary star of the system first (although this in itself is not a criteria for ease of observation). For example, Sirius A is easy to find but Sirius B is a close companion nearly always lost in the glare of the primary star and will thus make it a challenge to observe the secondary.
Where the star is a simple double the primary is always the brighter of the two. Complex systems (3 or more stars) are shown within blank lines above and below to aid clarity. In this instance A is the primary, B the secondary, and so on. All of the primary stars listed below should be well with the range of the Mark I eyeball, i.e. the naked-eye, this list ranges from -1.5 to +3.8. However, a few of the secondary components range down to as faint as +13.5. This, in combination with some of the small angular separations, will make some of the stars listed below a challenge, even for seasoned observers with elaborate equipment.
Letter Con. Name R.A. Dec PA Sep. Mag. Notes.
- - - h m ° ' ° " 1 2
alpha CMa Sirius 06 45.1 -16 43 005 4.5 -1.5, 8.3 Binary, 50y.
alpha Cen Rigel Kent 14 49.6 -60 50 215 19.7 0.0, 1.2 Binary, 79.9y.
beta Ori Rigel 05 14.5 -08 12 202 9.5 0.1, 6.8
alpha CMi Procyon 07 39.3 -05 14 021 5.2 0.4, 12.9 Binary, 40.7y.
beta Cen Agena 14 03.8 -60 22 251 1.3 0.7, 3.9
alpha Aql Altair 19 50.8 +08 52 301 165.2 0.8, 9.5
alpha Sco Antares 16 29.4 -26 26 273 2.7 1.2, 5.4 Binary, 878y.
alpha Cru Acrux 12 26.6 -63 06 AB 115 4.4 1.4, 1.9
AC 202 90.1 1.4, 4.9
alpha Leo Regulus 10 08.4 +11 58 307 176.9 1.4, 7.7
epsilon CMa Adhara 06 58.6 -28 58 161 7.5 1.5, 7.4
alpha Gem Castor 07 34.6 +31 53 AB 088 2.5 1.6, 2.9
AC 164 72.5 1.6, 8.8 Binary, 420y.
gamma Cru Gacrux 12 31.2 -57 07 AB 031 110.6 1.6, 6.7
AC 082 155.2 1.6, 9.5
zeta Ori Alnitak 05 40.8 -01 57 AB 162 2.4 1.9, 4.0 Binary, 1059y.
AC 010 57.6 1.9, 9.9
gamma Vel Rigor 08 09.5 -47 20 AB 220 41.2 1.9, 4.2
AC 151 62.3 1.9, 8.2
AD 141 93.5 1.9, 9.1
DE 146 1.8 9.1, 12.5
alpha UMa Dubhe 11 03.7 +61 45 283 0.7 1.9, 4.8 Binary, 44.7y.
alpha UMi Polaris 02 31.8 +89 16 218 18.4 2.0, 9.0
alpha Hya Alphard 09 17.6 -08 40 153 283.1 2.0, 9.5
beta Peg Scheat 23 03.8 +28 05 AB 211 108.5 2.0v, 11.6
AC 098 253.1 2.0v, 9.4
delta Vel Koo She 08 44.7 -54 43 AB 153 2.6 2.1, 5.1
AC 061 69.2 2.1, 11.0
CD 102 6.2 11.0, 13.5
gamma Leo Algeiba 10 20.0 +19 51 AB 124 4.3 2.2, 3.5
AC 291 259.9 2.2, 9.2
AD 302 333.0 2.2, 9.6 Binary, 619y.
gamma Cyg Sadr 20 22.2 +40 15 196 41.2 2.2, 9.9 B is also a close double.
delta Ori Mintaka 05 32.0 -00 18 359 52.6 2.2v, 6.3
zeta UMa Mizar 13 23.9 +54 56 AB 152 14.4 2.3, 4.0
AC 071 708.7 2.3, 4.0
gamma And Almaak 02 03.9 +42 20 063 9.8 2.3, 4.8
epsilon Cen - 13 39.9 -53 28 158 36.0 2.3 12.7
epsilon Peg Enif 21 44.2 +09 52 AB 325 81.8 2.4, 11.2
AC 320 142.5 2.4, 9.4
epsilon Boo Izar 14 45.0 +27 04 339 2.8 2.5, 2.9
beta Sco Graffias 16 05.4 -19 48 AC 021 13.6 2.6, 4.9 A is a close double.
theta Aur - 05 59.7 +37 13 AB 313 3.6 2.6, 7.1
AC 297 50.0 2.6, 10.6
alpha Col Phakt 05 39.6 -34 04 359 13.5 2.6, 12.3
eta Cen - 14 35.5 -42 09 270 19.7 2.6, 13.5
mu Vel - 10 46.8 -49 25 055 2.3 2.7, 6.4 Binary, 116y.
eta Dra Aldhibain 16 24.0 +61 31 142 5.2 2.7, 8.7
gamma Aql Tarazed 19 46.3 +10 37 258 132.6 2.7, 10.7
alpha Mus - 12 37.2 -69 08 316 29.6 2.7 12.8
alpha Lib Zubenelgenubi 14 50.9 -16 02 314 231.0 2.8, 5.2
iota Ori Hatysa 05 35.4 -05 55 141 11.3 2.8, 6.9
beta Lep Nihal 05 28.2 -20 46 AB 330 2.5 2.8, 7.3
AC 145 64.3 2.8, 11.8
AD 075 206.4 2.8, 10.3
AE 058 241.5 2.8, 10.3
gamma Cen Menkent 12 41.4 -48 58 353 1.4 2.9, 2.9 Binary, 84.5y.
alpha² CVn Cor Caroli 12 56.0 +38 19 229 19.4 2.9, 5.5
zeta Her Ruticulus 16 41.3 +31 36 089 1.6 2.9, 5.5 Binary, 34.5y.
delta Cyg - 19 45.0 +45 07 225 2.4 2.9, 6.3 Binary, 828y.
epsilon Per - 03 57.9 +40 01 010 8.8 2.9, 8.1
sigma Sco Alniyat 16 21.2 -25 36 273 20.0 2.9, 8.5
zeta Per Atik 03 54.1 +31 53 AB 208 12.9 2.9, 9.5
AC 286 32.8 2.9, 11.3
AD 195 94.2 2.9, 9.5
AE 185 120.3 2.9, 10.2
eta Peg Matar 22 43.0 +30 13 339 90.4 2.9, 9.9 B is a close double.
gamma Per - 03 04.8 +53 30 326 57.0 2.9, 10.6
beta Aqr Sadalsuud 21 31.6 -05 34 AB 321 35.4 2.9, 10.8
AC 186 57.2 2.9, 11.4
pi Sco - 15 58.9 -26 07 132 50.4 2.9, 12.1
eta Oph Sabik 17 10.4 -15 43 247 0.5 3.0, 3.5 Binary, 84.3y.
epsilon Gem Mebsuta 06 43.9 +25 08 094 110.3 3.0, 9.0
delta Cor Algorel 12 29.9 -16 31 214 24.2 3.0, 9.2
mu Gem Tejat 06 22.9 +22 31 077 72.7 3.0, 9.8
beta Cyg Albireo 19 30.7 +27 58 054 35.4 3.1, 5.1 Yellow & blue.
beta Cap Dabih 20 21.0 -14 47 267 205.0 3.1, 6.0 B is also double.
u Car - 09 47.1 -65 04 127 5.0 3.1, 6.1
iota UMa Talita 08 59.2 +48 02 100 1.8 3.1, 10.2 Binary, 818y.
eta Sag - 18 17.6 -36 46 105 3.6 3.2, 7.8
beta Cep Alphirk 21 28.7 +70 34 249 13.3 3.2, 7.9
alpha Cir - 14 42.5 -64 59 232 15.7 3.2, 8.6
pi³ Ori - 04 49.8 +06 58 138 94.6 3.2, 8.7
zeta Sag Ascella 19 02.6 -29 53 320 0.3 3.3, 3.4 Binary, 21.2y.
eta Per Miram 02 50.7 +55 54 300 28.3 3.3, 8.5
sigma Pup - 07 29.2 -43 18 074 22.3 3.3, 9.4
gamma Ara - 17 25.4 -56 23 AB 328 17.9 3.3, 10.3
AC 066 41.6 3.3, 11.8
theta Tau - 04 28.7 +15 32 346 337.4 3.4, 3.8
theta Eri Acamar 02 58.3 -40 18 088 8.2 3.4, 4.5
eta Cas Achird 00 49.1 +57 49 293 12.2 3.4, 7.5 Binary, 480y.
mu Her - 17 46.5 +27 43 247 33.8 3.4, 10.1
delta Aql - 19 25.5 +03 07 271 108.9 3.4, 10.9
gamma Vir Arich 12 41.7 -01 27 287 3.0 3.5, 3.5 Binary, 171.4y.
gamma Cet (See note 1) 02 43.3 +03 14 294 2.8 3.5, 7.3
delta Gem Wasat 07 20.1 +21 59 223 6.0 3.5, 8.2 Binary, 1200y.
nu UMa (See note 2) 11 18.5 +33 06 147 7.2 3.5, 9.9
alpha Cap - 20 18.1 -12 33 291 377.7 3.6, 4.2 (alpha¹-alpha²)
lambda Ori Heka 05 35.1 +09 56 043 4.4 3.6, 5.5
eta Lup - 16 00.1 -38 24 020 15.0 3.6, 7.8
kappa Gem - 07 44.4 +24 24 240 7.1 3.6, 8.1
lambda Gem - 07 18.1 +16 32 033 9.6 3.6, 10.7
alpha² Cap - 20 18.1 -12 33 AB 172 6.6 3.6, 11.0
AD 156 154.6 3.6, 9.3
BC 240 1.2 11.0, 11.3
upsilon4 Eri - 04 17.9 -33 38 013 49.2 3.6, 11.8 A is a close double.
pi Sgr Albaldah 19 09.8 -21 01 AB 150 0.1 3.7, 3.7
AB+C 122 0.4, 3.7, 3.7+5.9
beta Mus - 12 46.3 -68 06 014 1.4 3.7, 4.0
gamma Lep - 05 44.5 -22 27 350 96.3 3.7, 6.3
epsilon Lup - 15 22.7 -44 41 247 0.6 3.7, 7.2
delta Her Sarin 17 15.0 +24 50 236 8.9 3.7, 8.2 Optical pair.
tau4 Eri Angetenar 03 19.5 -21 45 AB 288 5.7 3.7, 9.2
AC 112 39.2 3.7, 10.7
delta Aur - 05 59.5 +54 17 AB 271 115.4 3.7, 9.5
AC 067 197.1 3.7, 9.5
beta Ser - 15 46.2 +15 25 265 30.6 3.7, 9.9
chi Eri - 01 56.0 -51 37 202 5.0 3.7, 10.7
alpha Dor - 04 34.0 -55 03 AB 182 0.2 3.8, 4.3
AB+C 101 77.7 3.8, 4.3+9.8
epsilon Hya - 08 46.8 +06 25 AB 295 0.2 3.8, 4.7 Binary, 890 years.
AB+C 281 2.8 3.8, 4.7+6.8
eta Ori Algjebbah 05 24.5 -02 24 AB 080 1.5 3.8, 4.8
AC 051 115.1 3.8, 9.4
tau Cyg - 21 14.8 +38 03 015 0.5 3.8, 6.4 Binary, 50 years.
epsilon Dra Tyl 19 48.2 +70 16 015 3.1 3.8, 7.4
gamma Her - 16 21.9 +19 09 233 41.6 3.8, 9.8
b Vel - 08 40.6 -46 39 058 37.5 3.8, 10.2
alpha Del Svalocin 20 39.6 +15 55 AB 224 29.5 3.8, 13.3
AC 272 43.4 3.8, 11.8
Letter Con. Name R.A. Dec PA Sep. Mag Notes.
- - - h m ° ' ° " 1 2
Notes: All co-ordinates are epoch 2000.0.
1. gamma Ceti, name is Alkaffaljidhina.
2. nu Ursae Majoris, name is Alula Borealis.
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