03131+4440 ES 1310AD

Coord 2000	03131+4440		Discov num	ES 1310		Comp	AD		Coord arcsec 2000	03 13 09.79 +44 39 23.7
Date first	1896		Date last	2011		Obs	9
Pa first	235		Pa last	235		P.A. Now (θ)	235°
Sep first	97.4		Sep last	98.1		Sep. Now (ρ)	98.1"
Mag pri	10.54		Mag sec	9.09		delta mag (ΔM)	1.45		Spectral class
Pri motion ra	+001		Sec motion ra	+006
Pri motion dec	+003		Sec motion dec	-010
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

234.8

last precise sep

98.08

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
03131+4440	ES 1310	AD	2007	8	235	98.3	10.54	9.09		D	031309.79+443923.7
03131+4440	ES 1310	AD	2011	9	235	98.1	10.54	9.09		D	031309.79+443923.7

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