19564+3916 ALI 909AB

Coord 2000	19564+3916		Discov num	ALI 909		Comp	AB		Coord arcsec 2000	19 56 26.45 +39 15 28.4
Date first	1929		Date last	2015		Obs	4
Pa first	201		Pa last	201		P.A. Now (θ)	201°
Sep first	14.7		Sep last	14.7		Sep. Now (ρ)	14.7"
Mag pri	12.30		Mag sec	12.90		delta mag (ΔM)	0.6		Spectral class
Pri motion ra	+003		Sec motion ra	+004
Pri motion dec	-009		Sec motion dec	-025
Notes

rPM=0.633 Nature of this double is uncertain.

Show	name	SAO	coord_2000	discov#	comp	first	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show			19564+3916	ALI 909	AB	1929	2015	4	201	14.7	12.30	12.90	0.60		<===
Show			19564+3916	ALI 909	AC	1998	2015	3	215	13.3	12.30	14.10	1.80
Show			19564+3916	ALI 909	BC	1998	2015	3	320	3.7	12.90	14.10	1.20

Triple system
3 visible stars in this system

Precise pa

201

Precise sep

14.728

Constellation

Cygnus

Gaia DR2

51154227456

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
19564+3916	ALI 909	AB	2002	3	201	14.8	12.30	12.90		D	195626.45+391528.4
19564+3916	ALI 909	AB	2015	4	201	14.7	12.30	12.90			195626.45+391528.4

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