20310+2054 GCB  55

Coord 2000	20310+2054		Discov num	GCB  55		Comp			Coord arcsec 2000	20 30 54.66 +20 55 11.3
Date first	1930		Date last	2015		Obs	16
Pa first	145		Pa last	149		P.A. Now (θ)	149°
Sep first	5.2		Sep last	6.7		Sep. Now (ρ)	6.7"
Mag pri	11.80		Mag sec	11.90		delta mag (ΔM)	0.1		Spectral class
Pri motion ra	-001		Sec motion ra	+012
Pri motion dec	-004		Sec motion dec	-016
Notes	N (See Notes)

Visually invisible, K-band or other infrared star rPM=0.885 This double is not physical.

Precise pa

148.6

Precise sep

6.74

Constellation

Vulpecula

Gaia DR2

40869565440

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20310+2054	GCB 55		2004	4	148	6.7	11.80	11.90		N	203054.66+205511.3
20310+2054	GCB 55		2012	8	149	6.8	11.80	11.90		N	203054.66+205511.3
20310+2054	GCB 55		2013	10	150	6.7	11.80	11.90		N	203054.66+205511.3
20310+2054	GCB 55		2015	11	149	6.7	11.80	11.90		N	203054.66+205511.3

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