00315+4904 HU  509AB

Coord 2000	00315+4904		Discov num	HU  509		Comp	AB		Coord arcsec 2000	00 31 29.92 +49 04 16.0
Date first	1902		Date last	2015		Obs	13
Pa first	56		Pa last	56		P.A. Now (θ)	56°
Sep first	2.7		Sep last	2.6		Sep. Now (ρ)	2.6"
Mag pri	10.17		Mag sec	12.96		delta mag (ΔM)	2.79		Spectral class	A2 (white)
Pri motion ra	-015		Sec motion ra	-015
Pri motion dec	-004		Sec motion dec	-004
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			00315+4904	HU 509	AB	1902	2015	13	56	2.6	10.17	12.96	2.79		<===
Show			00315+4904	FOX 110	AC	1916	2015	8	189	16.6	9.90	13.68	3.78
Show			00315+4904	FOX 110	AD	1916	2015	8	141	35.7	9.90	12.76	2.86

Quadruple system
4 visible stars in this system

Precise pa	56		Precise sep	2.584		Constellation	Cassiopeia		SAO	36439
Tycho2	3256-01520-1		Gaia DR2	1758990720

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
00315+4904	HU 509	AB	2001	10	54	2.7	9.60	10.60	A2		003129.92+490416.0
00315+4904	HU 509	AB	2006	11	56	2.6	9.60	10.60	A2		003129.92+490416.0
00315+4904	HU 509	AB	2013	12	56	2.6	10.17	12.96	A2		003129.92+490416.0
00315+4904	HU 509	AB	2015	13	56	2.6	10.17	12.96	A2		003129.92+490416.0

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