20106+3751 SEI 949

Coord 2000	20106+3751		Discov num	SEI 949		Comp			Coord arcsec 2000	20 10 31.78 +37 50 39.0
Date first	1896		Date last	2015		Obs	12
Pa first	138		Pa last	134		P.A. Now (θ)	134°
Sep first	10.6		Sep last	10.4		Sep. Now (ρ)	10.4"
Mag pri	10.73		Mag sec	10.39		delta mag (ΔM)	0.34		Spectral class	K0 (yellow-orange)
Pri motion ra	-004		Sec motion ra	-002
Pri motion dec	-011		Sec motion dec	-008
Notes	N (See Notes)

Visually invisible, K-band or other infrared star rPM=0.308 Nature of this double is uncertain.

Precise pa	133.7		Precise sep	10.41		Constellation	Cygnus		Tycho2	3151-00700-1
Gaia DR2	92665451008		HD	228099

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20106+3751	SEI 949		1998	4	134	10.4	10.73	11.50		D	201031.78+375039.0
20106+3751	SEI 949		2010	5	134	10.3	10.73	11.50		D	201031.78+375039.0
20106+3751	SEI 949		2013	7	134	10.4	10.73	10.39	K0	N	201031.78+375039.0
20106+3751	SEI 949		2015	8	134	10.4	10.73	10.39	K0	N	201031.78+375039.0

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