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	2002		Obs	3
Pa first	201		Pa last	201		P.A. Now (θ)	201°
Sep first	14.7		Sep last	14.8		Sep. Now (ρ)	14.8"
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	2002	3	201	14.8	12.30	12.90	0.60		<===
Show			19564+3916	ALI 909	AC	1998	2002	2	215	13.4	12.30	14.10	1.80
Show			19564+3916	ALI 909	BC	1998	2002	2	319	3.7	12.90	14.10	1.20

Triple system
3 visible stars in this system

Precise pa	200.8		Precise sep	14.755		Cdsa2 id	ALI 909 AB		Constellation	Cygnus
Ra deg	19.940680555555556		De deg	39.257888888888886		last precise pa	200.8		last precise sep	14.755

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

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