21479+3306 OSO 157 AE

Coord 2000	21479+3306		Discov num	OSO 157		Comp	AE		Coord arcsec 2000	21 47 55.62 +33 06 27.2
Date first	1994		Date last	2014		Obs	16
Pa first	332		Pa last	322.2		P.A. Now (θ)	322.2°
Sep first	19.2		Sep last	21.555		Sep. Now (ρ)	21.555"
Mag pri	12.08		Mag sec	18.47		delta mag (ΔM)	6.39		Spectral class
Pri motion ra	+251		Sec motion ra
Pri motion dec	-113		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			21 47 56 +33 06 27	OSO 157 AB	2016	13	352	5.3	12.08	17.82	5.74
Show			21 47 56 +33 06 27	OSO 157 AC	2014	17	72	11.6	12.08	17.60	5.52
Show			21 47 56 +33 06 27	OSO 157 AD	2014	15	29	13.9	12.08	18.28	6.20
Show			21 47 56 +33 06 27	OSO 157 AE	2014	16	322	21.6	12.08	18.47	6.39		<===
Show			21 47 56 +33 06 27	OSO 157 AF	2013	4	123	16.2	12.08	19.10	7.02

Sextuple system
6 estimated visually detectable stars in this system

Constellation

Cygnus

Tycho2

2722-01470-1

Gaia DR2

1946513435207273088

discov_num	notes	refcode
OSO 157	G214-001. Based on astrometry and color, AB comprises the only common
	proper motion pair in this system	Oso2004

refcode	metd	author	reference
Oso2004	C j	Zapatero Osorio, M.R. & Martin, E.L.	2004A&A...419..167Z
Oso2004	+Pa	A&A 419, 167, 2004

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
21479+3306	OSO 157	AE	2002	8	328	20.1	12.08	18.47		N D	214755.62+330627.2
21479+3306	OSO 157	AE	2014	16	322	21.6	12.08	18.47		N	214755.62+330627.2

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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