20167+2932 OSO 121AE

Coord 2000	20167+2932		Discov num	OSO 121		Comp	AE		Coord arcsec 2000	20 16 38.62 +29 31 50.3
Date first	1995		Date last	1998		Obs	2
Pa first	259		Pa last	259		P.A. Now (θ)	259°
Sep first	24.5		Sep last	25.2		Sep. Now (ρ)	25.2"
Mag pri	11.39		Mag sec	19.40		delta mag (ΔM)	8.01		Spectral class	K0 (yellow-orange)
Pri motion ra	+248		Sec motion ra
Pri motion dec	+135		Sec motion dec
Notes	N (See Notes)

Visually invisible, K-band or other infrared star Nature of this double is uncertain.

Show	name	SAO	coord_2000	discov#	comp	first	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show			20167+2932	OSO 121	AB	1994	1998	4	165	13.2	11.39	16.90	5.51
Show			20167+2932	OSO 121	AC	1994	1998	3	283	15.2	11.39	18.60	7.21
Show			20167+2932	OSO 121	AD	1995	1998	2	190	18.9	11.39	19.30	7.91
Show			20167+2932	OSO 121	AE	1995	1998	2	259	25.2	11.39	19.40	8.01		<===

Quintuple system
5 visible stars in this system

Precise pa	258.5		Precise sep	25.22		Constellation	Cygnus		Tycho2	2167-01103-1
Gaia DR2	79329053952

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20167+2932	OSO 121	AE	1998	2	259	25.2	11.39	19.40		N D	201638.62+293150.3

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