19579+2715 AC   16AC

Coord 2000	19579+2715		Discov num	AC   16		Comp	AC		Coord arcsec 2000	19 57 54.45 +27 15 07.3
Date first	1875		Date last	2017		Obs	29
Pa first	137		Pa last	136		P.A. Now (θ)	136°
Sep first	93.5		Sep last	92.3		Sep. Now (ρ)	92.3"
Mag pri	7.81		Mag sec	7.97		delta mag (ΔM)	0.16		Spectral class	A0 (white)
Pri motion ra	+000		Sec motion ra	+000
Pri motion dec	-011		Sec motion dec	-012
Notes	N Z (See Notes, Parallax indicates components are physical)

Visually invisible, K-band or other infrared star rPM=0.083 (< 0.3, Physical double) This double is physical.

Show	name	SAO	coord_2000	discov#	comp	first	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show		87988	19579+2715	AC 16	AB	1859	2016	57	232	0.4	7.81	9.17	1.36
Show		87988	19579+2715	AC 16	AC	1875	2017	29	136	92.3	7.81	7.97	0.16		<===

Triple system
3 visible stars in this system

Precise pa	136		Precise sep	92.3		Constellation	Vulpecula		SAO	87988
HIP	98248		Tycho2	2149-01062-1		HD	189214		BD	BD+26 3744
Distance	462.96		Distance ly	1510.18

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
19579+2715	AC 16	AC	2003	21	138	92.8	7.59	7.97		ZD	195754.45+271507.3
19579+2715	AC 16	AC	2013	23	136	93.8	7.81	7.97	A0	NZD	195754.45+271507.3
19579+2715	AC 16	AC	2015	24	136	92.9	7.81	7.97	A0	NZ	195754.45+271507.3
19579+2715	AC 16	AC	2017	25	136	92.3	7.81	7.97	A0	NZ	195754.45+271507.3

If you need more information about this double, apply for a data request form to the WDS.