20099+3951 ALI1135

Coord 2000	20099+3951		Discov num	ALI1135		Comp			Coord arcsec 2000	20 09 48.42 +39 50 35.3
Date first	1892		Date last	2015		Obs	10
Pa first	194		Pa last	200		P.A. Now (θ)	200°
Sep first	11.4		Sep last	13.1		Sep. Now (ρ)	13.1"
Mag pri	11.59		Mag sec	11.90		delta mag (ΔM)	0.31		Spectral class
Pri motion ra	+001		Sec motion ra	-017
Pri motion dec	-007		Sec motion dec	-019
Notes

rPM=0.849 This double is not physical.

Precise pa	199.7		Precise sep	13.116		Constellation	Cygnus		Tycho2	3154-03306-1
Gaia DR2	16869048832

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20099+3951	ALI1135		1998	3	199	12.8	11.59	11.90		D	200948.42+395035.3
20099+3951	ALI1135		2002	4	199	12.9	11.59	11.90		D	200948.42+395035.3
20099+3951	ALI1135		2010	5	199	13.0	11.59	11.90			200948.42+395035.3
20099+3951	ALI1135		2015	6	200	13.1	11.59	11.90			200948.42+395035.3

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