20017+3119 GRV 307

Coord 2000	20017+3119		Discov num	GRV 307		Comp			Coord arcsec 2000	20 01 47.01 +31 19 21.6
Date first	1998		Date last	2002		Obs	2
Pa first	138		Pa last	138		P.A. Now (θ)	138°
Sep first	45.7		Sep last	45.7		Sep. Now (ρ)	45.7"
Mag pri	12.59		Mag sec	14.19		delta mag (ΔM)	1.6		Spectral class
Pri motion ra	-009		Sec motion ra	-012
Pri motion dec	-010		Sec motion dec	-007
Notes

rPM=0.305 Nature of this double is uncertain.

Precise pa	137.8		Precise sep	45.663		Constellation	Cygnus		last precise pa	137.8
last precise sep	45.663

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20017+3119	GRV 307		2000	2	138	45.7	12.30	13.90		D	200147.01+311921.6
20017+3119	GRV 307		2002	3	138	45.7	12.30	13.90		D	200147.01+311921.6
20017+3119	GRV 307		2010	3	142	38.0	12.59	14.19			200147.01+311921.6

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