00447+4817 BU  231AB (Omi Cas)

Coord 2000	00447+4817		Discov num	BU  231		Comp	AB		Coord arcsec 2000	00 44 43.50 +48 17 03.8
Date first	1876		Date last	2011		Obs	14
Pa first	304		Pa last	302		P.A. Now (θ)	302°
Sep first	32.8		Sep last	34.4		Sep. Now (ρ)	34.4"
Mag pri	4.54		Mag sec	11.20		delta mag (ΔM)	6.66		Spectral class	B5IIIe (blue-white)
Pri motion ra	+019		Sec motion ra	+003
Pri motion dec	-007		Sec motion dec	-006
Notes	N (See Notes)

rPM=0.792 Nature of this double is uncertain.

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show		36620	00 44 44 +48 17 04	NOI 3 Aa,Ab	2007	6	269	0.0	4.60	7.50	2.90	Y
Show	Omi Cas	36620	00 44 44 +48 17 04	BU 231 AB	2011	14	302	34.4	4.54	11.20	6.66		<===

Triple system
2 visible stars in this system

Precise pa	301.6		Precise sep	34.38		Name	Omi Cas		Constellation	Cassiopeia
SAO	36620		HIP	3504		Gaia DR2	390548351252549760		HD	4180
HR	193		GC	882		BD	BD+47 183		Bayer	Omicron Cassiopeiae
Bayer name	Omi Cas		Flamsteed	22 Cassiopeiae		Flamsteed name	22 Cas		Distance	215.52
Distance ly	703.03

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
00447+4817	BU 231	AB	1998	12	303	33.8	4.54	11.20	B5IIIe	N D	004443.50+481703.8
00447+4817	BU 231	AB	2002	13	303	34.3	4.54	11.20	B5IIIe	N D	004443.50+481703.8
00447+4817	BU 231	AB	2011	14	302	34.4	4.54	11.20	B5IIIe	N D	004443.50+481703.8

If you need more information about this double, apply for a data request form to the WDS.