20122+3600 SEI 991

Coord 2000	20122+3600		Discov num	SEI 991		Comp			Coord arcsec 2000	20 12 06.39 +35 59 36.5
Date first	1896		Date last	2015		Obs	11
Pa first	297		Pa last	296		P.A. Now (θ)	296°
Sep first	20.6		Sep last	20.1		Sep. Now (ρ)	20.1"
Mag pri	11.68		Mag sec	12.50		delta mag (ΔM)	0.82		Spectral class
Pri motion ra	-002		Sec motion ra	-002
Pri motion dec	-008		Sec motion dec	-008
Notes

Nature of this double is uncertain.

Precise pa	296		Precise sep	20.101		Constellation	Cygnus		Tycho2	2683-01860-1
Gaia DR2	95811769856

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20122+3600	SEI 991		1998	5	296	20.2	11.68	12.50		D	201206.39+355936.5
20122+3600	SEI 991		2002	6	296	20.1	11.68	12.50		D	201206.39+355936.5
20122+3600	SEI 991		2010	7	294	19.8	11.68	12.50			201206.39+355936.5
20122+3600	SEI 991		2015	7	296	20.1	11.68	12.50			201206.39+355936.5

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