ERIDANUS

ERIDANUS

(Abbreviation: Eri).

An immensely long constellation, extending from Achernar in the far south as far as Kursa, near Orion. Achernar is the only brilliant star, though q (Acamar) was raned as the first magnitude in ancient times, and there are suggestions that it has faded. Mythologically , Eridanus is the river Po – and this was the river into which the youth Phæthon was plunged he had obtained permission to drive the Sun-chariot for a day, and had lost control of it, so that Jupiter was forced to strike him down with a thunderbolt.

There are 15 stars above the forth magnitude:

BRIGHTEST STARS

STAR	R.A.			DEC			MAG.	ABS. MAG.	SPEC	DIST.PC
STAR	H	M	S	o	‘	“	MAG.	ABS. MAG.	SPEC	DIST.PC
a	01	37	42.9	-57	14	12	0.46	-1.6	B5	26 ACHERNAR LY/ 120
c	01	55	57.5	-51	36	32	3.70	3.2	G5	15
k	02	26	59.1	-47	42	14	4.25	-2.2	B5	190
f	02	16	30.6	-51	30	44	3.56	-0.2	B8	37
i	02	40	40.0	-39	51	19	4.11	0.2	KO	61
1 t 1	02	45	06.1	-18	34	21	4.47	3.7	F6	15
2 t 2	02	51	02.2	-21	00	15	4.75	0.2	KO	81
3 h	02	56	25.6	-08	53	54	3.89	0.9	K1	23 AZHA
q	02	58	15.6	-40	18	17	2.92	0.6+1.7	A3+A2	17 ACAMAR
11 t 3	03	02	23.4	-23	37	28	4.09	2.1	A5	23
13 z	03	15	49.9	-08	49	11	4.80	1.8	A3	16 ZIBAL
16 t 4	03	19	30.9	-21	45	28	3.69	-0.5	gM3	69 ANGETENAR
e	03	19	55.7	-43	04	10	4.27	5.3	G5	6.2
17 v	03	30	37.0	-05	04	30	4.73	-0.2	B8	97
18 Î	03	32	55.8	-09	27	30	4.73	6.1	K2	3.3
19 t 5	03	33	47.2	-21	37	58	4.27	-0.2	B8	78
y	03	37	05.6	-40	16	29	4.58	0.2	KO	89
H	03	42	50.0	-37	18	49	4.59	-0.3	gK5	95
d	03	43	14.8	-09	45	48	3.54	3.8	KO	9 RANA
26 p	03	46	08.4	-12	06	06	4.42	-1.1	gMa	50
27 t 6	03	46	50.8	-23	14	59	4.23	3.1	F3	17
g	03	48	35.3	-37	37	20	4.27	0.6	AO	50
33 t 8	03	53	42.6	-24	36	45	4.65	-1.1	B5	140
34 w	03	54	17.4	-02	57	17	4.46	0.3	G8	68
34 g	03	58	01.7	-13	30	31	2.95	-0.4	MO	44 ZAURAK
36 t 9	03	59	55.4	-23	00	59	4.66	-0.6	AO	110
38 o1	04	11	51.8	-06	50	15	4.04	-0.7	F2	85 BEID
40 o2	04	15	16.2	-07	39	10	4.43	6.0	KI	4.9 KEID
41 n 4	04	17	53.6	-33	47	54	3.56	0.0	B8.5	40
43 n 3	04	24	02.1	-34	01	01	3.96	-0.5	M1	78
50 n 1	04	33	30.6	-29	46	00	4.51	0.3	gG6	63
52 n 2	04	35	33.0	-30	33	45	3.82	0.2	KO	53 THEEMINI
48 n	04	36	19.1	-03	21	09	3.93	-3.6	B2	350
53 I	04	38	10.7	-14	18	15	3.87	-0.1	K2	44 SCEPTRUM
54	04	40	26.4	-19	40	18	4.32	-0.5	gM4	92
57 m	04	45	30.1	-03	15	17	4.02	-1.6	B5	130
61 v	04	52	53.6	-05	27	10	4.39	1.6	A9	36
67 b	05	07	50.9	-05	05	11	2.79	0.0	A3	28 KURSA LY/ 80
69 l	05	09	08.7	-08	45	15	4.27	-3.0	B2	280

DOUBLES

STAR	R.A.			DEC			MAGS.	P.A.	DIST.”
STAR	H	M	S	o	‘	“	MAGS.	P.A.	DIST.”
q	02	58	15.6	-40	18	17	3.2,4.3	088	8.5 PA SLOW INCREASING
34 g	03	58	01.7	-13	30	31	2.9,11	242	52.8 OPTICAL
40 o2	04	15	16.2	-07	39	10	4.4,9.4	105	82.8 B IS AGAIN DOUBLE, PA 347, DIST 7”6

VARIABLES

STAR	R.A.		DEC		RANGE	PERIOD,D.	SPEC	TYPE
STAR	H	M	o	‘	RANGE	PERIOD,D.	SPEC	TYPE
Z	02	45.5	-12	40	6.4---7.8	80	M	SEMI-REGULAR
Y	02	03.0	-57	23	10.7---13.5	308	M	MIRA
T	03	53.1	-24	11	7.4---13.2	252	M	MIRA

CLUSTERS AND NEBULÆ

OBJECT	R.A.		DEC		TYPE	NOTES
OBJECT	H	M	o	‘	TYPE	NOTES
NGC 1084	02	43.5	-07	47	GALAXY	MAG.11.TYPE Sc
NGC 1187	03	00.4	-23	04	GALAXY	MAG.11.TYPE SBc
NGC 1232	03	07.5	-20	46	GALAXY	MAG.10.5 .TYPE Sc
NGC 1291	03	15.5	-41	17	GALAXY	MAG.10.2 .ELLIPTICAL
NGC 1300	03	17.5	-19	35	GALAXY	MAG.11.5 .TYPE SBc
NGC 1309	03	19.8	-15	35	GALAXY	MAG.11.4. TYPE Sc
NGC 1332	03	24.1	-21	31	GALAXY	MAG.11.TYPE E7
NGC 1395	03	36.3	-23	11	GALAXY	MAG.11.4. TYPE E3
NGC 1407	03	37.9	-18	44	GALAXY	MAG.10.6. TYPE E0
I 2118	05	04.5	-07	17	NEBULA	ADJOINING RIGEL