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_2000	discov#	comp	first	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show		36620	00447+4817	NOI 3	Aa,Ab	2005	2007	6	269	0.0	4.60	7.50	2.90	Y
Show	Omi Cas	36620	00447+4817	BU 231	AB	1876	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		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
last precise pa	301.6		last precise sep	34.38

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

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