20063+3538 SEI 871AB

Coord 2000	20063+3538		Discov num	SEI 871		Comp	AB		Coord arcsec 2000	20 06 14.13 +35 38 02.2
Date first	1896		Date last	2016		Obs	11
Pa first	172		Pa last	173		P.A. Now (θ)	173°
Sep first	11.5		Sep last	11.5		Sep. Now (ρ)	11.5"
Mag pri	10.85		Mag sec	12.60		delta mag (ΔM)	1.75		Spectral class	B9: (blue-white)
Pri motion ra	-004		Sec motion ra	-001
Pri motion dec	-006		Sec motion dec	-009
Notes

rPM=0.469 Nature of this double is uncertain.

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show		69399	20 06 14 +35 38 02	SEI 871 AB	2016	11	173	11.5	10.85	12.60	1.75		<===
Show		69399	20 06 14 +35 38 02	SEI 872 AC	2016	15	56	29.1	10.85	11.01	0.16

Triple system
3 visible stars in this system

Precise pa	172.5		Precise sep	11.531		Constellation	Cygnus		SAO	69399
Tycho2	2683-03935-1		Gaia DR2	2059071028985383296

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20063+3538	SEI 871	AB	2002	4	173	11.5	10.85	12.60		D	200614.12+353802.2
20063+3538	SEI 871	AB	2010	6	173	11.2	10.85	12.60	B9:		200614.13+353802.2
20063+3538	SEI 871	AB	2016	6	173	11.5	10.85	12.60	B9:		200614.13+353802.2

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