20073+3553 BKO  91DE

Coord 2000	20073+3553		Discov num	BKO  91		Comp	DE		Coord arcsec 2000	20 07 11.27 +35 53 05.9
Date first	1998		Date last	2015		Obs	8
Pa first	101		Pa last	100		P.A. Now (θ)	100°
Sep first	6.8		Sep last	6.8		Sep. Now (ρ)	6.8"
Mag pri	13.00		Mag sec	13.20		delta mag (ΔM)	0.2		Spectral class
Pri motion ra	+001		Sec motion ra	+001
Pri motion dec	-001		Sec motion dec	-006
Notes

rPM=0.822 This double is not physical.

Show	name	SAO	coord_2000	discov#	comp	first	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show			20073+3553	SEI 892	AB	1895	2015	12	335	15.5	12.10	12.60	0.50
Show			20073+3553	BKO 91	AC	1998	2015	8	290	12.4	12.10	15.20	3.10
Show			20073+3553	BKO 91	AD	1998	2015	8	298	51.6	12.10	13.00	0.90
Show			20073+3553	BKO 91	DE	1998	2015	8	100	6.8	13.00	13.20	0.20		<===

Quintuple system
5 visible stars in this system

Precise pa	100.4		Precise sep	6.781		Constellation	Cygnus		SAO	69448
Tycho2	2683-02384-1		Gaia DR2	01381992448

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20073+3553	BKO 91	DE	2002	2	101	6.8	13.00	13.20		D	200711.27+355305.9
20073+3553	BKO 91	DE	2010	4	101	7.2	13.00	13.20			200711.27+355305.9
20073+3553	BKO 91	DE	2015	4	101	6.6	13.00	13.20			200711.27+355305.9

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