02422+4242 STT  44AB

Coord 2000	02422+4242		Discov num	STT  44		Comp	AB		Coord arcsec 2000	02 42 13.13 +42 41 57.2
Date first	1843		Date last	2016		Obs	56
Pa first	58		Pa last	55		P.A. Now (θ)	55°
Sep first	1.4		Sep last	1.4		Sep. Now (ρ)	1.4"
Mag pri	8.46		Mag sec	8.96		delta mag (ΔM)	0.5		Spectral class	B9Vp (blue-white)
Pri motion ra	-001		Sec motion ra	-001
Pri motion dec	-008		Sec motion dec	-008
Notes	N (See 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		38254	02422+4242	STT 44	AB	1843	2016	56	55	1.4	8.46	8.96	0.50		<===
Show		38254	02422+4242	STT 44	AC	1894	2017	14	290	87.2	8.47	8.32	0.15
Show		38248	02422+4242	HJ 1124	CD	1828	2013	7	150	17.5	8.32	12.30	3.98

Quadruple system
4 visible stars in this system

Precise pa	55.4		Precise sep	1.369		Constellation	Perseus		SAO	38254
HIP	12619		Tycho2	2853-01013-1		Gaia DR2	337152875448699392		HD	16728
BD	BD+42 598		Distance	248.14		Distance ly	809.43

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
02422+4242	STT 44	AB	1998	46	55	1.3	8.46	8.96	B9Vp	D	024213.13+424157.2
02422+4242	STT 44	AB	2007	48	55	1.4	8.46	8.96	B9Vp	D	024213.13+424157.2
02422+4242	STT 44	AB	2008	49	56	1.4	8.46	8.96	B9Vp	D	024213.13+424157.2
02422+4242	STT 44	AB	2009	51	58	1.4	8.46	8.96	B9Vp	D	024213.13+424157.2
02422+4242	STT 44	AB	2012	54	56	1.4	8.46	8.96	B9Vp	N	024213.13+424157.2
02422+4242	STT 44	AB	2015	55	56	1.3	8.46	8.96	B9Vp	N	024213.13+424157.2
02422+4242	STT 44	AB	2016	56	55	1.4	8.46	8.96	B9Vp	N	024213.13+424157.2

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