00218+6628 STT   7AB

Coord 2000	00218+6628		Discov num	STT   7		Comp	AB		Coord arcsec 2000	00 21 50.62 +66 28 01.8
Date first	1847		Date last	2015		Obs	28
Pa first	107		Pa last	129		P.A. Now (θ)	129°
Sep first	0.5		Sep last	0.9		Sep. Now (ρ)	0.9"
Mag pri	9.21		Mag sec	9.81		delta mag (ΔM)	0.6		Spectral class	F0 (yellow-white)
Pri motion ra	-001		Sec motion ra	-001
Pri motion dec	-011		Sec motion dec	-011
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			00218+6628	STT 7	AB	1847	2015	28	129	0.9	9.21	9.81	0.60		<===
Show			00218+6628	STT 7	AC	1847	2015	26	259	48.5	9.21	8.58	0.63
Show			00218+6628	STT 7	AD	1880	2015	15	102	109.7	9.21	7.80	1.41
Show			00218+6628	STT 7	CD	1893	2015	15	95	155.5	8.58	7.80	0.78

Quadruple system
4 visible stars in this system

Precise pa	128.8		Precise sep	0.908		Constellation	Cassiopeia		SAO	11136
Tycho2	4027-00572-1		Gaia DR2	4078141824		HD	1696

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
00218+6628	STT 7	AB	2001	25	127	0.9	9.21	9.81	F0		002150.62+662801.8
00218+6628	STT 7	AB	2009	26	127	0.9	9.21	9.81	F0	N	002150.62+662801.8
00218+6628	STT 7	AB	2011	27	128	0.9	9.21	9.81	F0	N	002150.62+662801.8
00218+6628	STT 7	AB	2015	28	129	0.9	9.21	9.81	F0	N	002150.62+662801.8

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