19515+3726 ALI 640

Coord 2000	19515+3726		Discov num	ALI 640		Comp			Coord arcsec 2000	19 51 29.06 +37 26 19.9
Date first	1929		Date last	2015		Obs	11
Pa first	75		Pa last	83		P.A. Now (θ)	83°
Sep first	7.1		Sep last	6.5		Sep. Now (ρ)	6.5"
Mag pri	12.90		Mag sec	13.30		delta mag (ΔM)	0.4		Spectral class
Pri motion ra	+003		Sec motion ra	+009
Pri motion dec	+011		Sec motion dec	-002
Notes

rPM=1.256 This double is not physical.

Precise pa	83.4		Precise sep	6.493		Constellation	Cygnus		Tycho2	2681-00671-1
Gaia DR2	44228451584

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
19515+3726	ALI 640		1933	1	82	8.2	11.90	11.90			195129.56+372648.0
19515+3726	ALI 640		2002	4	82	6.6	12.90	13.30			195129.06+372619.9
19515+3726	ALI 640		2014	5	82	6.4	12.90	13.30			195129.06+372619.9
19515+3726	ALI 640		2015	7	83	6.5	12.90	13.30			195129.06+372619.9

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