20251+3141 ES 2434

Coord 2000	20251+3141		Discov num	ES 2434		Comp			Coord arcsec 2000	20 25 07.38 +31 40 43.2
Date first	1893		Date last	2015		Obs	9
Pa first	280		Pa last	287		P.A. Now (θ)	287°
Sep first	4.2		Sep last	4.3		Sep. Now (ρ)	4.3"
Mag pri	10.50		Mag sec	10.70		delta mag (ΔM)	0.2		Spectral class
Pri motion ra	+074		Sec motion ra	-001
Pri motion dec	-031		Sec motion dec	-007
Notes

rPM=0.981 This double is not physical.

Precise pa	287.2		Precise sep	4.271		Constellation	Cygnus		SAO	69981
Gaia DR2	77854162688

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20251+3141	ES 2434		2006	7	286	4.1	10.50	10.70		D	202507.38+314043.2
20251+3141	ES 2434		2015	9	287	4.3	10.50	10.70			202507.38+314043.2

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