20297+3808 STF2691

Coord 2000	20297+3808		Discov num	STF2691		Comp			Coord arcsec 2000	20 29 43.18 +38 07 31.5
Date first	1828		Date last	2019		Obs	47
Pa first	31		Pa last	32		P.A. Now (θ)	32°
Sep first	15.0		Sep last	16.3		Sep. Now (ρ)	16.3"
Mag pri	8.14		Mag sec	8.45		delta mag (ΔM)	0.31		Spectral class	B6V (blue-white)
Pri motion ra	+002		Sec motion ra	+000
Pri motion dec	+002		Sec motion dec	+000
Notes	N (See Notes)

Visually invisible, K-band or other infrared star rPM=1 This double is not physical.

Precise pa	32		Precise sep	16.3		Constellation	Cygnus		SAO	70107
HIP	101109		Tycho2	3152-02085-1		Gaia DR2	73332474240		HD	195406
BD	BD+37 3952		Distance	214.13		Distance ly	698.49

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20297+3808	STF2691		2008	35	31	17.2	8.14	8.45	B6V	D	202943.18+380731.5
20297+3808	STF2691		2012	39	31	17.3	8.14	8.45	B6V	D	202943.18+380731.5
20297+3808	STF2691		2013	40	31	17.2	8.14	8.45	B6V	D	202943.18+380731.5
20297+3808	STF2691		2017	42	31	17.0	8.14	8.45	B6V	N	202943.18+380731.5
20297+3808	STF2691		2019	47	32	16.3	8.14	8.45	B6V	N	202943.18+380731.5

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