20167+2932 OSO 121AC

Coord 2000	20167+2932		Discov num	OSO 121		Comp	AC		Coord arcsec 2000	20 16 38.62 +29 31 50.3
Date first	1994		Date last	1998		Obs	3
Pa first	288		Pa last	283		P.A. Now (θ)	283°
Sep first	14.8		Sep last	15.2		Sep. Now (ρ)	15.2"
Mag pri	11.39		Mag sec	18.60		delta mag (ΔM)	7.21		Spectral class	K0 (yellow-orange)
Pri motion ra	+248		Sec motion ra
Pri motion dec	+135		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 16 39 +29 31 50	OSO 121 AB	1998	4	165	13.2	11.39	16.90	5.51
Show			20 16 39 +29 31 50	OSO 121 AC	1998	3	283	15.2	11.39	18.60	7.21		<===
Show			20 16 39 +29 31 50	OSO 121 AD	1998	2	190	18.9	11.39	19.30	7.91
Show			20 16 39 +29 31 50	OSO 121 AE	1998	2	259	25.2	11.39	19.40	8.01

Quintuple system
5 visible stars in this system

Precise pa	283.4		Precise sep	15.23		Constellation	Cygnus		Tycho2	2167-01103-1
Gaia DR2	1837393679329053952

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20167+2932	OSO 121	AC	1998	3	283	15.2	11.39	18.60		N D	201638.62+293150.3

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