20122+3548 SEI 992

Coord 2000	20122+3548		Discov num	SEI 992		Comp			Coord arcsec 2000	20 12 08.62 +35 47 36.4
Date first	1896		Date last	2015		Obs	13
Pa first	79		Pa last	77		P.A. Now (θ)	77°
Sep first	25.6		Sep last	26.4		Sep. Now (ρ)	26.4"
Mag pri	12.42		Mag sec	12.38		delta mag (ΔM)	0.04		Spectral class
Pri motion ra	-019		Sec motion ra	-003
Pri motion dec	-012		Sec motion dec	-005
Notes

rPM=0.777 Nature of this double is uncertain.

Precise pa	76.7		Precise sep	26.393		Constellation	Cygnus		Tycho2	2683-03488-1
Gaia DR2	92583339264

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20122+3548	SEI 992		2002	6	77	26.4	12.35	12.40		D	201208.62+354736.4
20122+3548	SEI 992		2010	8	77	26.3	12.42	12.38			201208.62+354736.4
20122+3548	SEI 992		2015	9	77	26.4	12.42	12.38			201208.62+354736.4

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