19534+2020 STFA 48AB

Coord 2000	19534+2020		Discov num	STFA 48		Comp	AB		Coord arcsec 2000	19 53 22.65 +20 20 14.1
Date first	1782		Date last	2019		Obs	67
Pa first	151		Pa last	147		P.A. Now (θ)	147°
Sep first	38.9		Sep last	41.7		Sep. Now (ρ)	41.7"
Mag pri	7.14		Mag sec	7.34		delta mag (ΔM)	0.2		Spectral class	A0 (white)
Pri motion ra	+030		Sec motion ra	+034
Pri motion dec	+016		Sec motion dec	+016
Notes	N Z (See Notes, Parallax indicates components are physical)

Visually invisible, K-band or other infrared star rPM=0.106 (< 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		87874	19534+2020	STFA 48	AB	1782	2019	67	147	41.7	7.14	7.34	0.20		<===
Show		87874	19534+2020	GUI 28	AC	1895	2015	15	218	222.3	7.14	10.48	3.34
Show		87876	19534+2020	HDS2833	Ba,Bb	1991	2019	4	273	0.2	7.63	9.39	1.76

Quadruple system
3 visible stars in this system

Precise pa	147		Precise sep	41.7		Constellation	Vulpecula		SAO	87874
HIP	97876		Tycho2	1624-00131-1		Gaia DR2	55291059584		HD	188211
BD	BD+19 4195		Distance	145.77		Distance ly	475.5

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
19534+2020	STFA 48	AB	2005	54	148	42.9	7.14	7.34	A0	NZD	195322.65+202014.1
19534+2020	STFA 48	AB	2012	56	148	42.9	7.14	7.34	A0	NZD	195322.65+202014.1
19534+2020	STFA 48	AB	2013	59	147	42.2	7.14	7.34	A0	NZD	195322.65+202014.1
19534+2020	STFA 48	AB	2014	60	147	41.8	7.14	7.34	A0	NZD	195322.65+202014.1
19534+2020	STFA 48	AB	2017	62	147	41.8	7.14	7.34	A0	NZ	195322.65+202014.1
19534+2020	STFA 48	AB	2019	67	147	41.7	7.14	7.34	A0	NZ	195322.65+202014.1

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