00538+5242 STF  70AC

Coord 2000	00538+5242		Discov num	STF  70		Comp	AC		Coord arcsec 2000	00 53 47.53 +52 41 21.6
Date first	1903		Date last	2015		Obs	14
Pa first	148		Pa last	154		P.A. Now (θ)	154°
Sep first	80.3		Sep last	73.2		Sep. Now (ρ)	73.2"
Mag pri	6.33		Mag sec	11.04		delta mag (ΔM)	4.71		Spectral class	A5m (white)
Pri motion ra	+075		Sec motion ra	-013
Pri motion dec	-021		Sec motion dec	-004
Notes

rPM=1.151 This double is not physical.

Show	name	SAO	coord_2000	discov#	comp	first	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show		21814	00538+5242	STF 70	AB	1831	2015	34	247	8.1	6.33	9.49	3.16
Show		21814	00538+5242	STF 70	AC	1903	2015	14	154	73.2	6.33	11.04	4.71		<===
Show		21814	00538+5242	STF 70	CD	1908	2003	4	86	1.5	11.04	11.40	0.36

Quadruple system
4 visible stars in this system

Precise pa	153.7		Precise sep	73.212		Constellation	Cassiopeia		SAO	21814
HIP	4212		Tycho2	3668-00795-1		Gaia DR2	9352939008		HD	5128
HR	250		BD	BD+51 179		Distance	88.42		Distance ly	288.43

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
00538+5242	STF 70	AC	2007	10	154	73.5	6.33	11.04		D	005347.53+524121.6
00538+5242	STF 70	AC	2010	11	153	74.0	6.33	11.04		D	005347.53+524121.6
00538+5242	STF 70	AC	2011	13	153	74.0	6.33	11.04		D	005347.53+524121.6
00538+5242	STF 70	AC	2015	14	154	73.2	6.33	11.04	A5m		005347.53+524121.6

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