20027+3349 BKO 523 AD

Coord 2000	20027+3349		Discov num	BKO 523		Comp	AD		Coord arcsec 2000	20 02 44.05 +33 48 26.9
Date first	1998		Date last	2015		Obs	7
Pa first	342		Pa last	340.6		P.A. Now (θ)	340.6°
Sep first	4.9		Sep last	5.024		Sep. Now (ρ)	5.024"
Mag pri	10.50		Mag sec	13.00		delta mag (ΔM)	2.5		Spectral class
Pri motion ra	+005		Sec motion ra
Pri motion dec	-005		Sec motion dec
Notes	N (See Notes)

Nature of this double is uncertain.

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show			20 02 44 +33 48 27	SEI 815 AB	2015	10	358	19.4	10.91	12.60	1.69
Show			20 02 44 +33 48 27	SEI 816 AC	2015	10	113	20.6	10.50	11.00	0.50
Show			20 02 44 +33 48 27	BKO 523 AD	2015	7	341	5.0	10.50	13.00	2.50		<===

Quadruple system
4 estimated visually detectable stars in this system

Constellation

Cygnus

Gaia DR2

2058272611751580544

discov_num	notes	refcode
BKO 523	Anon. 36.	Bko2009d

refcode	metd	author	reference
Bko2009d	C u	Berko, E.	2009JDSO....5..189B
Bko2009d		JDSO 5, 189, 2009

idgroup	discov	author
1	SEI	Scheiner, J.

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20027+3349	BKO 523	AD	2008	1	348	5.0	10.50	13.00		N	200244.06+334827.0
20027+3349	BKO 523	AD	2015	4	341	5.0	10.50	13.00		N	200244.05+334826.9

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Radius: auto 0.5" 0.8" 1" 2" 3" 5" 10" 15" 20" 25" 30" 35" 40" 45" 50" 55" 1' 2' 3' 4' 5' 6' 7' 8' 9' 10' 15' 20' 30' 40' 50' 1° 2° 4° 5° 8° Components only

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS