20105+3614 SEI 947

Coord 2000	20105+3614		Discov num	SEI 947		Comp			Coord arcsec 2000	20 10 29.50 +36 14 09.8
Date first	1896		Date last	2015		Obs	11
Pa first	291		Pa last	291		P.A. Now (θ)	291°
Sep first	15.0		Sep last	15.4		Sep. Now (ρ)	15.4"
Mag pri	12.60		Mag sec	12.60		delta mag (ΔM)	0		Spectral class
Pri motion ra	+004		Sec motion ra	+001
Pri motion dec	-003		Sec motion dec	-004
Notes

rPM=0.632 Nature of this double is uncertain.

Precise pa	291.1		Precise sep	15.379		Constellation	Cygnus		SAO	69539
Gaia DR2	72225948288

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20105+3614	SEI 947		1983	3	290	15.4	10.70	11.00			201012.00+361400.0
20105+3614	SEI 947		1998	4	291	15.3	12.60	12.60		D	201029.50+361409.8
20105+3614	SEI 947		2002	5	291	15.4	12.60	12.60		D	201029.50+361409.8
20105+3614	SEI 947		2010	6	290	16.0	12.60	12.60			201029.50+361409.8
20105+3614	SEI 947		2015	7	291	15.4	12.60	12.60			201029.50+361409.8

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