PERSEUS

(Abbreviation: Per)

A prominent constellation, containing the prototype-eclipsing star Algol as well as the superb Sword-Handle cluster (H. VI.33-4). Myth logically, Perseus was a hero of one of the most famous of all legends; he killed the Gorgon, Medusa, and married Andromeda, daughter of Cepheus and Cassiopeia. The Gorgon’s head is marked by the winking ‘Demon star’, Algol. Perseus includes 12 stars above the fourth magnitude.

BRIGHTEST STARS

STAR	R.A.			DEC			MAG.	ABS.MAG.	SPEC	DIST.PC
STAR	H	M	S	o	‘	“	MAG.	ABS.MAG.	SPEC	DIST.PC
f	01	43	39.6	+50	41	20	4.07	-3.9	B1	350
13 q	02	44	11.9	+49	13	43	4.12	3.8	F7	13
16	02	50	34.9	+38	19	07	4.23	0.6	F2	50
15 h	02	50	41.8	+55	53	44	3.76	-4.4	K3	250
17	02	51	30.8	+35	03	35	4.53	-0.3	K5	150
18 t	02	54	15.4	+52	45	45	3.95	0.3	G4	54 KERB
22 p	02	58	45.6	+39	39	46	4.70	1.4	A2	44
23 g	03	04	47.7	+53	30	23	2.93	0.3	G8	34
25 r	03	05	10.5	+38	50	25	var	-0.5v	M4	60
26 b	03	08	10.1	+40	57	21	2.12v	-0.2	B8	29 ALGOL l/y 105
i	03	09	03.9	+49	36	49	4.05	3.7	GO	12
27 k	03	09	29.7	+44	51	27	3.80	0.2	KO	53 MISAM
28 w	03	11	17.3	+39	36	42	4.63	0.0	KO	180
33 a	03	24	19.3	+49	51	40	1.80	-4.6	F5	190 MIRfAK l/y 620
34	03	29	22.0	+49	30	32	4.67	-2.3	B3	210
35 s	03	30	34.4	+47	59	43	4.35	-0.2	K3	71
37 y	03	36	29.3	+48	11	34	4.23	-1.2	B5e	126
39 d	03	42	55.4	+47	47	15	3.01	-2.2	B5	100
38 o	03	44	19.1	+32	17	18	3.83	-4.4	B1	310 ATI
41 n	03	45	11.6	+42	34	43	3.77	-2.0	F5	140
44 z	03	54	07.8	+31	53	01	2.85	-5.7	B1	340 ATIK
45 Î	03	57	51.1	+40	00	37	2.89	-3.7	BO.5	208
46 x	03	58	57.8	+35	47	28	4.04	-5.4	O7	210 MENKIB
47 l	04	06	35.0	+50	21	05	4.29	0.2	B9	62
48 u	04	08	39.6	+47	42	45	4.04	-1.7	B3	140 NEMBUS
52 f	04	14	53.3	+40	29	01	4.71	-4.5	G5+A5	560
51 m	04	14	53.8	+48	24	33	4.14	-4.5	GO	460
b	04	18	14.6	+50	17	44	4.62v	var	A2	55

DOUBLES

STAR	R.A.			DEC			MAGS.	P.A.	DIST.”
STAR	H	M	S	o	‘	“	MAGS.	P.A.	DIST.”
13 q	02	44	11.9	+49	13	43	4.1,10.0	303	18.3 BINARY, ABOUT 2700 YEARS
15 h	02	50	41.8	+55	53	44	3.8,8.6	3.1	28.4 FIXED
26 b	03	08	10.1	+40	57	21	var,10.5	193	82.1 OPTICAL
44 z	03	54	07.8	+31	53	01	2.8,9.4	208	12.9 OPTICAL
45 Î	03	57	51.1	+40	00	37	2.9,8.1	009	9.0 FIXED

VARIABLES

STAR	R.A.		DEC		RANGE	PERIOD.D	SPEC	TYPE
STAR	H	M	o	‘	RANGE	PERIOD.D	SPEC	TYPE
U	01	56.2	+54	35	7.6---12.3	321	M	MIRA
S	02	19.3	+56	23	7.9---11.1	very slow	M	SEMI-REGULAR
25 r	03	05.2	+38	50	3.2---4.2	33-55	M4	SEMI-REGULAR
26 b	03	08.2	+40	57	2.1---3.3	2.687	B8	PROTOTYPE
X	03	52.3	+30	54	6.0---6.6	?	OP	ALGOL STAR IRREGULAR ? RADIO SOURCE

CLUSTERS AND NEBULÆ

OBJECT	R.A.		DEC		TYPE	NOTES
OBJECT	H	M	o	‘	TYPE	NOTES
NGC 650-1 M.76	01	38.8	+51	19	PLANETARY	MAG.12.2 (FAINTEST MESSIER OBJECT)
NGC 869/884 H.VI.33-4	02	18	+56	54	DOUBLE CLUSTER	SWORD-HANDLE; NAKED-EYE
NGC 957	02	28.9	+57	18	OPEN CLUSTER	MAG.7. ABOUT 40 STARS
NGC 1039 M.34	02	38.8	+42	34	OPEN CLUSTER	MAG..5.5 ABOUT 80 STARS
NGC 1245	03	11.2	+47	03	OPEN CLUSTER	MAG.7. ABOUT 40 STARS
NGC 1342	03	28.4	+37	09	OPEN CLUSTER	MAG.7. ABOUT 40 STARS
I 2003	03	53.2	+33	44	PLANETARY	MAG.12.6 VERY FAINT CENTRAL STAR
NGC 1499	04	00.1	+36	17	NEBULA	CALIFORNIA NEBULA
NGC 1528	04	11.4	+51	07	OPEN CLUSTER	MAG.6 ABOUT 80 STARS