20247+3454 GRV 338

Coord 2000	20247+3454		Discov num	GRV 338		Comp			Coord arcsec 2000	20 24 47.34 +34 54 22.3
Date first	1999		Date last	2015		Obs	8
Pa first	20		Pa last	20		P.A. Now (θ)	20°
Sep first	54.7		Sep last	54.6		Sep. Now (ρ)	54.6"
Mag pri	12.23		Mag sec	14.11		delta mag (ΔM)	1.88		Spectral class
Pri motion ra	+013		Sec motion ra	+012
Pri motion dec	+020		Sec motion dec	+003
Notes

rPM=0.714 Nature of this double is uncertain.

Precise pa	20		Precise sep	54.573		Constellation	Cygnus		Tycho2	2693-00280-1
Gaia DR2	66678752896

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20247+3454	GRV 338		2000	2	20	54.7	12.00	13.90		D	202447.34+345422.3
20247+3454	GRV 338		2002	3	20	54.7	12.00	13.90		D	202447.34+345422.3
20247+3454	GRV 338		2010	3	20	54.9	12.23	14.11			202447.34+345422.3
20247+3454	GRV 338		2015	4	20	54.6	12.23	14.11			202447.34+345422.3

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