Principal Stars of Eridanus - The Night Sky Atlas

Principal star listings for each constellation appear below, selected from the Bright Star Catalog 5th edition. All stars with a Flamsteed designation and/or a greek Bayer designation are listed with selected data. That may be more than the stars commonly referred to as principal stars, but they're listed anyway. Each star has a link to its atlas location via its Harvard Revised (HR) number.

Eridanus
The River Eridanus

Visible in August before dawn, to April after dusk, best in December.

HR	RA hours J2000	DEC degrees J2000	RA arcsec /year	DEC arcsec /year	Flam- steed	Bayer	Visual mag	Light Years	Related HR Entry	Star remarks from notes
472	01h 37m 42.9s	-57° 14´ 12"	+0.095"	-0.035"		Alpha	0.46	125		Member of Pleiades group. ACHERNAR.
566	01h 55m 57.5s	-51° 36´ 32"	+0.681"	+0.292"		Chi	3.7	56
674	02h 16m 30.6s	-51° 30´ 44"	+0.096"	-0.027"		Phi	3.56			Pleiades group.
721	02h 26m 59.1s	-47° 42´ 14"	+0.023"	-0.010"		Kappa	4.25			Pleiades group.
794	02h 40m 40.0s	-39° 51´ 20"	+0.138"	-0.032"		Iota	4.11	85
818	02h 45m 06.2s	-18° 34´ 21"	+0.330"	+0.038"	1	Tau 1	4.47	45
850	02h 51m 02.3s	-21° 00´ 15"	-0.046"	-0.019"	2	Tau 2	4.75	105		Angetenar; Al Anchat al Nahr; Anchat.
874	02h 56m 25.7s	-08° 53´ 53"	+0.079"	-0.220"	3	Eta	3.89	98		Wolf 630 group. Azha.
883	02h 57m 23.7s	-23° 51´ 43"	+0.098"	-0.030"	4		5.45	112
889	02h 58m 05.7s	-23° 36´ 22"	+0.060"	+0.050"	6		5.84
897	02h 58m 15.7s	-40° 18´ 17"	-0.045"	+0.019"		Theta 1	3.24	93		ACAMAR.
898	02h 58m 16.3s	-40° 18´ 16"	-0.064"	+0.018"		Theta 2	4.35	93
899	02h 59m 41.2s	-02° 27´ 54"	-0.002"	-0.022"	5		5.56
904	03h 00m 51.0s	-02° 52´ 43"	+0.020"	+0.006"	7		6.11
907	03h 01m 10.0s	-07° 39´ 46"	+0.098"	-0.070"	8	Rho 1	5.75
917	03h 02m 42.3s	-07° 41´ 07"	+0.047"	-0.001"	9	Rho 2	5.32
919	03h 02m 23.5s	-23° 37´ 28"	-0.145"	-0.054"	11	Tau 3	4.09	55		UMa stream.
925	03h 04m 16.4s	-07° 36´ 03"	+0.056"	+0.013"	10	Rho 3	5.26	125
984	03h 15m 50.0s	-08° 49´ 11"	-0.002"	+0.046"	13	Zeta	4.8	130		Zibal in Becvar, but this does not correspond to the position of Al Zibal (in Phoenix) described by Allen.
988	03h 16m 35.7s	-09° 09´ 16"	-0.005"	+0.048"	14		6.14
994	03h 18m 22.1s	-22° 30´ 41"	+0.018"	+0.012"	15		4.88	116		CoD-22d1146 = CPD-22d 349; south of -23d at epoch 1855, but in Southern Durchmusterung extension as SD-23d 44.
1003	03h 19m 31.0s	-21° 45´ 28"	+0.052"	+0.033"	16	Tau 4	3.69	250		Hyades group.
1070	03h 30m 37.1s	-05° 04´ 31"	+0.014"	+0.007"	17		4.73
1084	03h 32m 55.8s	-09° 27´ 30"	-0.974"	+0.021"	18	Epsilon	3.73	10
1088	03h 33m 47.3s	-21° 37´ 58"	+0.048"	-0.027"	19	Tau 5	4.27			Pleiades group.
1100	03h 36m 17.4s	-17° 28´ 01"	+0.029"	-0.010"	20		5.23	232		Pleiades group.
1111	03h 39m 01.1s	-05° 37´ 34"	-0.015"	-0.205"	21		5.96	116
1121	03h 40m 38.3s	-05° 12´ 38"	-0.003"	-0.001"	22		5.53
1136	03h 43m 14.9s	-09° 45´ 48"	-0.092"	+0.745"	23	Delta	3.54	29		Rana in Becvar. But see HR 188.
1146	03h 44m 30.5s	-01° 09´ 47"	+0.002"	-0.007"	24		5.25
1150	03h 44m 56.5s	-00° 17´ 48"	+0.057"	-0.001"	25		5.55			Zeta Her group.
1162	03h 46m 08.5s	-12° 06´ 06"	+0.048"	+0.058"	26	Pi	4.42
1173	03h 46m 50.9s	-23° 14´ 59"	-0.158"	-0.529"	27	Tau 6	4.23	55
1181	03h 47m 39.6s	-23° 52´ 29"	+0.043"	+0.048"	28	Tau 7	5.24	232
1202	03h 52m 41.6s	-05° 21´ 41"	-0.011"	-0.011"	30		5.48	181
1211	03h 54m 17.4s	-02° 57´ 10"	+0.029"	+0.008"	32		6.14	814
1212	03h 54m 17.5s	-02° 57´ 17"	+0.029"	+0.002"	32		4.79	814	(2)
1213	03h 53m 42.6s	-24° 36´ 45"	+0.023"	-0.016"	33	Tau 8	4.65
1231	03h 58m 01.8s	-13° 30´ 31"	+0.061"	-0.111"	34	Gamma	2.95	326		Zaurak; Zaurac; Zaurack.
1240	03h 59m 55.5s	-24° 00´ 59"	+0.015"	+0.015"	36	Tau 9	4.66	217
1244	04h 01m 32.0s	-01° 32´ 59"	+0.025"	-0.016"	35		5.28			Member of the local association (Pleiades group); in HII region; Cas-Tau OB1.
1290	04h 10m 22.5s	-06° 55´ 26"	-0.003"	-0.013"	37		5.44
1298	04h 11m 51.9s	-06° 50´ 15"	+0.010"	+0.082"	38	Omicron 1	4.04	98		Beid.
1318	04h 14m 23.7s	-10° 15´ 23"	-0.009"	-0.162"	39		4.87	217		Wolf 630 group.
1325	04h 15m 16.3s	-07° 39´ 10"	-2.242"	-3.414"	40	Omicron 2	4.43	15		Keid; Kied.
1347	04h 17m 53.7s	-33° 47´ 54"	+0.067"	-0.008"	41	Upsilon 4	3.56			Member of Pleiades group.
1383	04h 23m 40.8s	-03° 44´ 44"	-0.050"	-0.057"	42	Xi	5.17	250		In Ursa cluster? Sirius group; UMa stream.
1393	04h 24m 02.2s	-34° 01´ 01"	+0.069"	+0.051"	43		3.96	407		Hyades group.
1437	04h 31m 52.7s	-00° 02´ 38"	+0.003"	-0.009"	45		4.91	362
1449	04h 33m 54.8s	-06° 44´ 20"	0.000"	-0.007"	46		5.72
1451	04h 34m 11.6s	-08° 13´ 53"	-0.018"	-0.001"	47		5.11	543
1453	04h 33m 30.6s	-29° 46´ 00"	-0.102"	-0.275"	50	Upsilon 1	4.51	116
1463	04h 36m 19.1s	-03° 21´ 09"	+0.002"	-0.005"	48	Nu	3.93			Ori OB1.
1464	04h 35m 33.0s	-30° 33´ 44"	-0.045"	-0.012"	52	Upsilon 2	3.82	232		Theemim; Beemin. Allen applies this name, after Bayer, to the series of stars, Upsilon1 through Upsilon7 Eri, or HR 1143, 1195, 1214, 1347, 1393, 1453 and 1464. (The order of the superscripts varies among different catalogues.)
1474	04h 37m 36.1s	-02° 28´ 24"	+0.042"	-0.061"	51		5.23	95
1481	04h 38m 10.8s	-14° 18´ 14"	-0.075"	-0.156"	53		3.87	74		Sceptrum.
1496	04h 40m 26.5s	-19° 40´ 18"	+0.021"	-0.096"	54		4.32	407
1505	04h 43m 34.6s	-08° 47´ 37"	+0.021"	-0.012"	55		6.82	407
1506	04h 43m 35.1s	-08° 47´ 46"	+0.032"	-0.024"	55		6.7	407	(2)
1508	04h 44m 05.3s	-08° 30´ 13"	+0.003"	-0.002"	56		5.9
1520	04h 45m 30.1s	-03° 15´ 17"	+0.016"	-0.013"	57	Mu	4.02			Member of the local association (Pleiades group); Cas-Tau OB1.
1532	04h 47m 36.3s	-16° 56´ 04"	+0.133"	+0.170"	58		5.51	41
1538	04h 48m 32.5s	-16° 19´ 46"	+0.004"	+0.036"	59		5.77
1549	04h 50m 11.6s	-16° 13´ 02"	+0.041"	+0.054"	60		5.03	141
1560	04h 52m 53.7s	-05° 27´ 10"	-0.023"	+0.021"	61	Omega	4.39	250
1582	04h 56m 24.2s	-05° 10´ 17"	-0.008"	-0.007"	62		5.51
1608	04h 59m 50.4s	-10° 15´ 48"	+0.020"	-0.135"	63		5.38
1611	04h 59m 55.8s	-12° 32´ 15"	+0.045"	-0.091"	64		4.79	148
1617	05h 01m 26.3s	-07° 10´ 26"	+0.003"	+0.008"	65	Psi	4.81
1657	05h 06m 45.7s	-04° 39´ 18"	+0.016"	+0.008"	66		5.12	135
1666	05h 07m 51.0s	-05° 05´ 11"	-0.095"	-0.081"	67	Beta	2.79	65		Sirius group; UMa stream. Cursa; Dhalim; Kursa.
1673	05h 08m 43.6s	-04° 27´ 22"	+0.044"	+0.017"	68		5.12	65
1679	05h 09m 08.8s	-08° 45´ 15"	+0.002"	-0.004"	69	Lambda	4.27	1086

RA
hours
J2000

DEC
degrees
J2000

RA
arcsec
/year

DEC
arcsec
/year

Flam-
steed

Bayer

Visual
mag

Light
Years

Related
HR
Entry

Star remarks from notes

472

01h 37m 42.9s

-57° 14´ 12"

+0.095"

-0.035"

Alpha

0.46

125

Member of Pleiades group. ACHERNAR.

566

01h 55m 57.5s

-51° 36´ 32"

+0.681"

+0.292"

Chi

3.7

674

02h 16m 30.6s

-51° 30´ 44"

+0.096"

-0.027"

Phi

3.56

Pleiades group.

721

02h 26m 59.1s

-47° 42´ 14"

+0.023"

-0.010"

Kappa

4.25

Pleiades group.

794

02h 40m 40.0s

-39° 51´ 20"

+0.138"

-0.032"

Iota

4.11

818

02h 45m 06.2s

-18° 34´ 21"

+0.330"

+0.038"

Tau 1

4.47

850

02h 51m 02.3s

-21° 00´ 15"

-0.046"

-0.019"

Tau 2

4.75

105

Angetenar; Al Anchat al Nahr; Anchat.

874

02h 56m 25.7s

-08° 53´ 53"

+0.079"

-0.220"

Eta

3.89

Wolf 630 group. Azha.

883

02h 57m 23.7s

-23° 51´ 43"

+0.098"

-0.030"

5.45

112

889

02h 58m 05.7s

-23° 36´ 22"

+0.060"

+0.050"

5.84

897

02h 58m 15.7s

-40° 18´ 17"

-0.045"

+0.019"

Theta 1

3.24

ACAMAR.

898

02h 58m 16.3s

-40° 18´ 16"

-0.064"

+0.018"

Theta 2

4.35

899

02h 59m 41.2s

-02° 27´ 54"

-0.002"

-0.022"

5.56

904

03h 00m 51.0s

-02° 52´ 43"

+0.020"

+0.006"

6.11

907

03h 01m 10.0s

-07° 39´ 46"

+0.098"

-0.070"

Rho 1

5.75

917

03h 02m 42.3s

-07° 41´ 07"

+0.047"

-0.001"

Rho 2

5.32

919

03h 02m 23.5s

-23° 37´ 28"

-0.145"

-0.054"

Tau 3

4.09

UMa stream.

925

03h 04m 16.4s

-07° 36´ 03"

+0.056"

+0.013"

Rho 3

5.26

125

984

03h 15m 50.0s

-08° 49´ 11"

-0.002"

+0.046"

Zeta

4.8

130

Zibal in Becvar, but this does not correspond to the position of Al Zibal (in Phoenix) described by Allen.

988

03h 16m 35.7s

-09° 09´ 16"

-0.005"

+0.048"

6.14

994

03h 18m 22.1s

-22° 30´ 41"

+0.018"

+0.012"

4.88

116

CoD-22d1146 = CPD-22d 349; south of -23d at epoch 1855, but in Southern Durchmusterung extension as SD-23d 44.

1003

03h 19m 31.0s

-21° 45´ 28"

+0.052"

+0.033"

Tau 4

3.69

250

Hyades group.

1070

03h 30m 37.1s

-05° 04´ 31"

+0.014"

+0.007"

4.73

1084

03h 32m 55.8s

-09° 27´ 30"

-0.974"

+0.021"

Epsilon

3.73

1088

03h 33m 47.3s

-21° 37´ 58"

+0.048"

-0.027"

Tau 5

4.27

Pleiades group.

1100

03h 36m 17.4s

-17° 28´ 01"

+0.029"

-0.010"

5.23

232

Pleiades group.

1111

03h 39m 01.1s

-05° 37´ 34"

-0.015"

-0.205"

5.96

116

1121

03h 40m 38.3s

-05° 12´ 38"

-0.003"

-0.001"

5.53

1136

03h 43m 14.9s

-09° 45´ 48"

-0.092"

+0.745"

Delta

3.54

Rana in Becvar. But see HR 188.

1146

03h 44m 30.5s

-01° 09´ 47"

+0.002"

-0.007"

5.25

1150

03h 44m 56.5s

-00° 17´ 48"

+0.057"

-0.001"

5.55

Zeta Her group.

1162

03h 46m 08.5s

-12° 06´ 06"

+0.048"

+0.058"

4.42

1173

03h 46m 50.9s

-23° 14´ 59"

-0.158"

-0.529"

Tau 6

4.23

1181

03h 47m 39.6s

-23° 52´ 29"

+0.043"

+0.048"

Tau 7

5.24

232

1202

03h 52m 41.6s

-05° 21´ 41"

-0.011"

5.48

181

1211

03h 54m 17.4s

-02° 57´ 10"

+0.029"

+0.008"

6.14

814

1212

03h 54m 17.5s

-02° 57´ 17"

+0.029"

+0.002"

4.79

814

(2)

1213

03h 53m 42.6s

-24° 36´ 45"

+0.023"

-0.016"

Tau 8

4.65

1231

03h 58m 01.8s

-13° 30´ 31"

+0.061"

-0.111"

Gamma

2.95

326

Zaurak; Zaurac; Zaurack.

1240

03h 59m 55.5s

-24° 00´ 59"

+0.015"

Tau 9

4.66

217

1244

04h 01m 32.0s

-01° 32´ 59"

+0.025"

-0.016"

5.28

Member of the local association (Pleiades group); in HII region; Cas-Tau OB1.

1290

04h 10m 22.5s

-06° 55´ 26"

-0.003"

-0.013"

5.44

1298

04h 11m 51.9s

-06° 50´ 15"

+0.010"

+0.082"

Omicron 1

4.04

Beid.

1318

04h 14m 23.7s

-10° 15´ 23"

-0.009"

-0.162"

4.87

217

Wolf 630 group.

1325

04h 15m 16.3s

-07° 39´ 10"

-2.242"

-3.414"

Omicron 2

4.43

Keid; Kied.

1347

04h 17m 53.7s

-33° 47´ 54"

+0.067"

-0.008"

Upsilon 4

3.56

Member of Pleiades group.

1383

04h 23m 40.8s

-03° 44´ 44"

-0.050"

-0.057"

5.17

250

In Ursa cluster? Sirius group; UMa stream.

1393

04h 24m 02.2s

-34° 01´ 01"

+0.069"

+0.051"

3.96

407

Hyades group.

1437

04h 31m 52.7s

-00° 02´ 38"

+0.003"

-0.009"

4.91

362

1449

04h 33m 54.8s

-06° 44´ 20"

0.000"

-0.007"

5.72

1451

04h 34m 11.6s

-08° 13´ 53"

-0.018"

-0.001"

5.11

543

1453

04h 33m 30.6s

-29° 46´ 00"

-0.102"

-0.275"

Upsilon 1

4.51

116

1463

04h 36m 19.1s

-03° 21´ 09"

+0.002"

-0.005"

3.93

Ori OB1.

1464

04h 35m 33.0s

-30° 33´ 44"

-0.045"

-0.012"

Upsilon 2

3.82

232

Theemim; Beemin. Allen applies this name, after Bayer, to the series of stars, Upsilon1 through Upsilon7 Eri, or HR 1143, 1195, 1214, 1347, 1393, 1453 and 1464. (The order of the superscripts varies among different catalogues.)

1474

04h 37m 36.1s

-02° 28´ 24"

+0.042"

-0.061"

5.23

1481

04h 38m 10.8s

-14° 18´ 14"

-0.075"

-0.156"

3.87

Sceptrum.

1496

04h 40m 26.5s

-19° 40´ 18"

+0.021"

-0.096"

4.32

407

1505

04h 43m 34.6s

-08° 47´ 37"

+0.021"

-0.012"

6.82

407

1506

04h 43m 35.1s

-08° 47´ 46"

+0.032"

-0.024"

6.7

407

(2)

1508

04h 44m 05.3s

-08° 30´ 13"

+0.003"

-0.002"

5.9

1520

04h 45m 30.1s

-03° 15´ 17"

+0.016"

-0.013"

4.02

Member of the local association (Pleiades group); Cas-Tau OB1.

1532

04h 47m 36.3s

-16° 56´ 04"

+0.133"

+0.170"

5.51

1538

04h 48m 32.5s

-16° 19´ 46"

+0.004"

+0.036"

5.77

1549

04h 50m 11.6s

-16° 13´ 02"

+0.041"

+0.054"

5.03

141

1560

04h 52m 53.7s

-05° 27´ 10"

-0.023"

+0.021"

Omega

4.39

250

1582

04h 56m 24.2s

-05° 10´ 17"

-0.008"

-0.007"

5.51

1608

04h 59m 50.4s

-10° 15´ 48"

+0.020"

-0.135"

5.38

1611

04h 59m 55.8s

-12° 32´ 15"

+0.045"

-0.091"

4.79

148

1617

05h 01m 26.3s

-07° 10´ 26"

+0.003"

+0.008"

Psi

4.81

1657

05h 06m 45.7s

-04° 39´ 18"

+0.016"

+0.008"

5.12

135

1666

05h 07m 51.0s

-05° 05´ 11"

-0.095"

-0.081"

Beta

2.79

Sirius group; UMa stream. Cursa; Dhalim; Kursa.

1673

05h 08m 43.6s

-04° 27´ 22"

+0.044"

+0.017"

5.12

1679

05h 09m 08.8s

-08° 45´ 15"

+0.002"

-0.004"

Lambda

4.27

1086

The night sky atlas creates images of any part of the night sky, allowing easy location of any object. Detailed chart images show all stars visible to the naked eye, the constellations, Messier objects, and names of the brightest stars. Data sources: Bright Star Catalog from the Astronomical Data Center, star names list from Steven Gibson, all-sky Milky Way image by Axel Mellinger. The data used in this product, in whole or in part, is used with permission of The NGC/IC Project LLC. Many thanks go to those who maintain and make available their astronomy datasets without which this sky atlas would not have been possible. Permission for any use of these chart images is granted, provided that the original website address remains visible on all images. Enjoy!