20239+1217 GRV 337

Coord 2000	20239+1217		Discov num	GRV 337		Comp			Coord arcsec 2000	20 23 57.50 +12 17 58.9
Date first	1999		Date last	2015		Obs	7
Pa first	171		Pa last	170		P.A. Now (θ)	170°
Sep first	62.5		Sep last	62.5		Sep. Now (ρ)	62.5"
Mag pri	9.50		Mag sec	13.30		delta mag (ΔM)	3.8		Spectral class
Pri motion ra	-015		Sec motion ra	-011
Pri motion dec	-017		Sec motion dec	-028
Notes

rPM=0.389 Nature of this double is uncertain.

Precise pa	170.4		Precise sep	62.546		Constellation	Delphinus		Tycho2	1082-00020-1
Gaia DR2	39701753344

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20239+1217	GRV 337		2000	2	170	62.5	9.50	13.30		D	202357.50+121758.9
20239+1217	GRV 337		2001	3	170	62.5	9.50	13.30		D	202357.50+121758.9
20239+1217	GRV 337		2010	3	171	62.5	9.50	13.30			202357.50+121758.9
20239+1217	GRV 337		2015	4	170	62.6	9.50	13.30			202357.50+121758.9

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