20090+4252 OSO 118AC

Coord 2000	20090+4252		Discov num	OSO 118		Comp	AC		Coord arcsec 2000	20 09 01.41 +42 51 54.9
Date first	1994		Date last	1998		Obs	2
Pa first	240		Pa last	237		P.A. Now (θ)	237°
Sep first	20.1		Sep last	21.2		Sep. Now (ρ)	21.2"
Mag pri	10.11		Mag sec	16.60		delta mag (ΔM)	6.49		Spectral class
Pri motion ra	+119		Sec motion ra
Pri motion dec	+341		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		49241	20090+4252	OSO 118	AB	1994	1998	2	150	12.2	10.11	17.60	7.49
Show		49241	20090+4252	OSO 118	AC	1994	1998	2	237	21.2	10.11	16.60	6.49		<===

Triple system
3 visible stars in this system

Precise pa	237		Precise sep	21.22		Spectr	F3		Constellation	Cygnus
SAO	49241		HIP	99267		Tycho2	3158-00447-1		BD	BD+42 3607
Distance	82.58		Distance ly	269.38

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20090+4252	OSO 118	AC	1998	2	237	21.2	10.11	16.60		N D	200901.41+425154.9

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