20063+3454 SEI 870AB

Coord 2000	20063+3454		Discov num	SEI 870		Comp	AB		Coord arcsec 2000	20 06 16.21 +34 54 05.9
Date first	1895		Date last	2015		Obs	11
Pa first	4		Pa last	2		P.A. Now (θ)	2°
Sep first	5.6		Sep last	6.5		Sep. Now (ρ)	6.5"
Mag pri	10.48		Mag sec	12.00		delta mag (ΔM)	1.52		Spectral class	A0 (white)
Pri motion ra	-001		Sec motion ra
Pri motion dec	-001		Sec motion dec
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			20063+3454	SEI 870	AB	1895	2015	11	2	6.5	10.48	12.00	1.52		<===
Show			20063+3454	POP 66	AC	1941	2015	10	117	25.4	10.48	12.42	1.94
Show			20063+3454	POP 66	AD	1941	2015	10	347	44.0	10.45	12.75	2.30

Quadruple system
4 visible stars in this system

Precise pa	2.4		Precise sep	6.494		Constellation	Cygnus		Tycho2	2679-02739-1
Gaia DR2	27826267392		HD	227660

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20063+3454	SEI 870	AB	1998	5	3	6.5	10.48	12.00		D	200616.21+345405.9
20063+3454	SEI 870	AB	2002	6	2	6.5	10.48	12.00		D	200616.21+345405.9
20063+3454	SEI 870	AB	2015	7	3	6.5	10.48	12.00	A0		200616.21+345405.9

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