20117+3706 SEI 980

Coord 2000	20117+3706		Discov num	SEI 980		Comp			Coord arcsec 2000	20 11 41.84 +37 06 22.2
Date first	1896		Date last	2015		Obs	10
Pa first	186		Pa last	185		P.A. Now (θ)	185°
Sep first	23.4		Sep last	23.8		Sep. Now (ρ)	23.8"
Mag pri	11.87		Mag sec	12.65		delta mag (ΔM)	0.78		Spectral class
Pri motion ra	-001		Sec motion ra	-005
Pri motion dec	-003		Sec motion dec	-008
Notes

rPM=0.679 Nature of this double is uncertain.

Precise pa

184.6

Precise sep

23.843

Constellation

Cygnus

Gaia DR2

65771273984

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20117+3706	SEI 980		1998	3	185	23.8	10.50	11.00		D	201141.84+370622.2
20117+3706	SEI 980		2002	4	185	23.8	10.50	11.00		D	201141.84+370622.2
20117+3706	SEI 980		2010	5	184	23.8	11.87	12.65			201141.84+370622.2
20117+3706	SEI 980		2015	6	185	23.9	11.87	12.65			201141.84+370622.2

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