01374+5838 DOB   2AC

Coord 2000	01374+5838		Discov num	DOB   2		Comp	AC		Coord arcsec 2000	01 37 22.87 +58 38 14.7
Date first	1902		Date last	2015		Obs	16
Pa first	109		Pa last	109		P.A. Now (θ)	109°
Sep first	107.0		Sep last	107.0		Sep. Now (ρ)	107"
Mag pri	7.26		Mag sec	10.29		delta mag (ΔM)	3.03		Spectral class	B3IV (blue-white)
Pri motion ra	+002		Sec motion ra	+003
Pri motion dec	-004		Sec motion dec	-001
Notes

rPM=0.707 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		22441	01374+5838	STT 33	AB	1843	2015	74	77	26.9	7.26	8.96	1.70
Show		22441	01374+5838	DOB 2	AC	1902	2015	16	109	107.0	7.26	10.29	3.03		<===
Show		22442	01374+5838	DOB 2	BC	1902	2015	14	119	85.4	8.96	10.29	1.33

Triple system
3 visible stars in this system

Precise pa	109.3		Precise sep	107.01		Constellation	Cassiopeia		SAO	22441
HIP	7559		Tycho2	3683-01540-1		Gaia DR2	7425216384		HD	9812
BD	BD+57 343		Distance	833.33		Distance ly	2718.32

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
01374+5838	DOB 2	AC	2003	9	110	106.7	7.26	10.29		D	013722.87+583814.7
01374+5838	DOB 2	AC	2008	10	109	107.9	7.26	10.29		D	013722.87+583814.7
01374+5838	DOB 2	AC	2010	11	109	106.7	7.26	10.29		D	013722.87+583814.7
01374+5838	DOB 2	AC	2015	13	109	107.0	7.26	10.29	B3IV		013722.87+583814.7

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