03131+4440 ES 1310AB

Coord 2000	03131+4440		Discov num	ES 1310		Comp	AB		Coord arcsec 2000	03 13 09.79 +44 39 23.7
Date first	1896		Date last	2011		Obs	10
Pa first	157		Pa last	160		P.A. Now (θ)	160°
Sep first	20.2		Sep last	22.7		Sep. Now (ρ)	22.7"
Mag pri	10.54		Mag sec	11.31		delta mag (ΔM)	0.77		Spectral class
Pri motion ra	+001		Sec motion ra	-004
Pri motion dec	+003		Sec motion dec	-019
Notes

Nature of this double is uncertain.

Show	name	SAO	coord_2000	discov#	comp	first	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show			03131+4440	ES 1310	AB	1896	2011	10	160	22.7	10.54	11.31	0.77		<===
Show			03131+4440	ES 1310	AD	1896	2011	9	235	98.1	10.54	9.09	1.45
Show			03131+4440	ES 1310	BC	1915	2011	5	123	3.0	11.31	11.84	0.53
Show			03131+4440	ES 1310	BD	1896	2011	8	248	94.5	11.31	9.09	2.22

Quadruple system
4 visible stars in this system

Constellation

Perseus

Tycho2

2860-00929-1

last precise pa

160.4

last precise sep

22.65

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
03131+4440	ES 1310	AB	1998	7	159	22.6	10.54	11.31		D	031309.79+443923.7
03131+4440	ES 1310	AB	2011	8	161	22.7	10.54	11.31		D	031309.79+443923.7

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