02051+7717 SHJ  22AB (47 Cas)

Coord 2000	02051+7717		Discov num	SHJ  22		Comp	AB		Coord arcsec 2000	02 05 07.42 +77 16 52.8
Date first	1881		Date last	2014		Obs	18
Pa first	196		Pa last	211		P.A. Now (θ)	211°
Sep first	95.1		Sep last	97.2		Sep. Now (ρ)	97.2"
Mag pri	5.31		Mag sec	10.10		delta mag (ΔM)	4.79		Spectral class	F0Vn (yellow-white)
Pri motion ra	+140		Sec motion ra	+009
Pri motion dec	-048		Sec motion dec	-040
Notes	N U (See Notes, Proper motion indicates non-physical)

Visually invisible, K-band or other infrared star rPM=0.887 This double is not physical.

Show	name	SAO	coord_2000	discov#	comp	first	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show		4562	02051+7717	LSC 19	Aa,Ab	2011	2014	4	140	0.1	5.40	7.60	2.20
Show	47 Cas	4562	02051+7717	SHJ 22	AB	1881	2014	18	211	97.2	5.31	10.10	4.79		<===

Triple system
2 visible stars in this system

Precise pa	211.1		Precise sep	97.154		Name	47 Cas		Constellation	Cassiopeia
SAO	4562		HIP	9727		Tycho2	4499-02252-1		Gaia DR2	0923136896
HD	12230		HR	581		GC	2459		BD	BD+76 63
Flamsteed	47 Cassiopeiae		Flamsteed name	47 Cas		Distance	33.16		Distance ly	108.17

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
02051+7717	SHJ 22	AB	2003	17	206	97.2	5.31	10.10	F0Vn	NL U	020507.42+771652.8
02051+7717	SHJ 22	AB	2014	18	211	97.2	5.31	10.10	F0Vn	NL U	020507.42+771652.8

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