20155+3415 GCB  51

Coord 2000	20155+3415		Discov num	GCB  51		Comp			Coord arcsec 2000	20 15 18.62 +34 17 38.9
Date first	1923		Date last	2015		Obs	4
Pa first	203		Pa last	215		P.A. Now (θ)	215°
Sep first	2.0		Sep last	2.9		Sep. Now (ρ)	2.9"
Mag pri	12.50		Mag sec	13.50		delta mag (ΔM)	1		Spectral class
Pri motion ra	+032		Sec motion ra
Pri motion dec	+043		Sec motion dec
Notes

Nature of this double is uncertain.

Precise pa	215.4		Precise sep	2.855		Constellation	Cygnus		Tycho2	2680-01189-1
Gaia DR2	06713261952

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20155+3415	GCB 51		1996	2	209	2.4	12.50	13.50		I	201546.56+341654.3
20155+3415	GCB 51		2000	3	214	2.5	12.50	13.50			201518.62+341738.9
20155+3415	GCB 51		2002	4	214	2.9	12.50	13.50			201518.62+341738.9
20155+3415	GCB 51		2015	4	215	2.9	12.50	13.50			201518.62+341738.9

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