20264+5638 STF2687

Coord 2000	20264+5638		Discov num	STF2687		Comp			Coord arcsec 2000	20 26 23.47 +56 38 19.3
Date first	1828		Date last	2019		Obs	52
Pa first	118		Pa last	118		P.A. Now (θ)	118°
Sep first	25.0		Sep last	25.1		Sep. Now (ρ)	25.1"
Mag pri	6.37		Mag sec	8.31		delta mag (ΔM)	1.94		Spectral class	B9V (blue-white)
Pri motion ra	+010		Sec motion ra	+015
Pri motion dec	+008		Sec motion dec	+007
Notes	N (See Notes)

Visually invisible, K-band or other infrared star rPM=0.308 Nature of this double is uncertain.

Precise pa	117.5		Precise sep	25.1		Constellation	Cygnus		SAO	32590
HIP	100808		Tycho2	3945-01549-1		Gaia DR2	70048985600		HD	195066
HR	7827		BD	BD+56 2421		Distance	189.04		Distance ly	616.65

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20264+5638	STF2687		2008	33	117	26.4	6.37	8.31	B9V	N D	202623.47+563819.3
20264+5638	STF2687		2010	39	117	26.2	6.37	8.31	B9V	N D	202623.47+563819.3
20264+5638	STF2687		2012	41	117	26.2	6.37	8.31	B9V	N D	202623.47+563819.3
20264+5638	STF2687		2014	43	117	25.9	6.37	8.31	B9V	N D	202623.47+563819.3
20264+5638	STF2687		2017	45	118	26.2	6.37	8.31	B9V	N	202623.47+563819.3
20264+5638	STF2687		2018	47	118	26.2	6.37	8.31	B9V	N	202623.47+563819.3
20264+5638	STF2687		2019	52	118	25.1	6.37	8.31	B9V	N	202623.47+563819.3

If you need more information about this double, apply for a data request form to the WDS.