20064+3147 GYL  31

Coord 2000	20064+3147		Discov num	GYL  31		Comp			Coord arcsec 2000	20 06 25.14 +31 47 35.3
Date first	1893		Date last	2015		Obs	13
Pa first	180		Pa last	180		P.A. Now (θ)	180°
Sep first	68.3		Sep last	68.2		Sep. Now (ρ)	68.2"
Mag pri	11.15		Mag sec	11.94		delta mag (ΔM)	0.79		Spectral class
Pri motion ra	+014		Sec motion ra	+005
Pri motion dec	+012		Sec motion dec	+010
Notes

rPM=0.5 Nature of this double is uncertain.

Precise pa	180.4		Precise sep	68.226		Constellation	Cygnus		SAO	69411
Tycho2	2671-00217-1		Gaia DR2	64700630656		HD	331851

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20064+3147	GYL 31		1998	6	180	68.2	11.15	11.80		D	200625.14+314735.3
20064+3147	GYL 31		2002	7	180	68.2	11.15	11.80		D	200625.14+314735.3
20064+3147	GYL 31		2010	8	181	68.1	11.15	11.94			200625.14+314735.3
20064+3147	GYL 31		2015	9	180	68.2	11.15	11.94			200625.14+314735.3

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