20073+3534 SEI 893CD

Coord 2000	20073+3534		Discov num	SEI 893		Comp	CD		Coord arcsec 2000	20 07 16.22 +35 34 28.0
Date first	1896		Date last	2015		Obs	10
Pa first	118		Pa last	119		P.A. Now (θ)	119°
Sep first	27.5		Sep last	27.4		Sep. Now (ρ)	27.4"
Mag pri	9.47		Mag sec	12.07		delta mag (ΔM)	2.6		Spectral class	B9V (blue-white)
Pri motion ra	+000		Sec motion ra	-004
Pri motion dec	-002		Sec motion dec	-007
Notes

rPM=0.794 Nature of this double is uncertain.

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show		69444	20 07 16 +35 34 28	COU 2125 Aa,Ab	1989	2	69	0.1	9.90	9.90	0.00
Show		69444	20 07 16 +35 34 28	ES 2248 AB	1998	2	30	5.9	9.15	13.80	4.65
Show		69444	20 07 16 +35 34 28	ES 2248 AC	2000	1	222	50.6	9.15	13.80	4.65
Show		69444	20 07 16 +35 34 28	SEI 893 CD	2015	10	119	27.4	9.47	12.07	2.60		<===

Quintuple system
4 visible stars in this system

Precise pa	119.1		Precise sep	27.418		Constellation	Cygnus		SAO	69444
Tycho2	2679-00177-1		Gaia DR2	2059042750919122816		HD	227758

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20073+3534	SEI 893	CD	1998	4	119	27.4	9.10	12.60	B9V	D	200716.22+353428.0
20073+3534	SEI 893	CD	2002	5	119	27.4	9.10	12.60	B9V	D	200716.22+353428.0
20073+3534	SEI 893	CD	2011	6	119	27.4	9.10	12.60	B9V	D	200716.22+353428.0
20073+3534	SEI 893	CD	2015	7	119	27.4	9.47	12.07	B9V		200716.22+353428.0

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