20288+3810 ES  206

Coord 2000	20288+3810		Discov num	ES  206		Comp			Coord arcsec 2000	20 28 49.36 +38 10 23.2
Date first	1896		Date last	2018		Obs	18
Pa first	121		Pa last	124		P.A. Now (θ)	124°
Sep first	3.9		Sep last	4.2		Sep. Now (ρ)	4.2"
Mag pri	9.85		Mag sec	10.49		delta mag (ΔM)	0.64		Spectral class
Pri motion ra	+002		Sec motion ra	+002
Pri motion dec	-002		Sec motion dec	-002
Notes	N V (See Notes, Proper motion indicates physical)

Visually invisible, K-band or other infrared star This double is physical.

Precise pa	124.1		Precise sep	4.162		Constellation	Cygnus		SAO	70084
Tycho2	3152-01326-1		Gaia DR2	96352101504

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20288+3810	ES 206		1998	10	123	3.9	9.85	10.49		D	202849.36+381023.2
20288+3810	ES 206		2008	12	124	4.0	9.85	10.49		D	202849.36+381023.2
20288+3810	ES 206		2015	16	124	4.1	9.85	10.49		N	202849.36+381023.2
20288+3810	ES 206		2018	17	124	4.2	9.85	10.49		N	202849.36+381023.2

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