19470+2710 BKO  81AC

Coord 2000	19470+2710		Discov num	BKO  81		Comp	AC		Coord arcsec 2000	19 46 59.26 +27 09 40.4
Date first	1999		Date last	2015		Obs	5
Pa first	173		Pa last	173		P.A. Now (θ)	173°
Sep first	84.7		Sep last	84.7		Sep. Now (ρ)	84.7"
Mag pri	11.39		Mag sec	12.65		delta mag (ΔM)	1.26		Spectral class
Pri motion ra	+001		Sec motion ra	-016
Pri motion dec	-001		Sec motion dec	-007
Notes

rPM=1.032 This double is not physical.

Show	name	SAO	coord_2000	discov#	comp	first	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show			19470+2710	TDT1740	Aa,Ab	1991	1991	1	228	1.7	11.43	13.00	1.57
Show			19470+2710	OSB 7	AB	1956	2015	7	347	9.9	11.50	12.90	1.40
Show			19470+2710	BKO 81	AC	1999	2015	5	173	84.7	11.39	12.65	1.26		<===
Show			19470+2710	BKO 81	CD	1999	2015	9	347	7.6	12.90	15.20	2.30

Quintuple system
4 visible stars in this system

Precise pa	172.7		Precise sep	84.736		Constellation	Vulpecula		Tycho2	2147-01026-1
Gaia DR2	15532324480		HD	338870

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
19470+2710	BKO 81	AC	2002	2	173	84.6	11.46	12.90		D	194659.26+270940.4
19470+2710	BKO 81	AC	2012	4	173	85.5	11.50	12.90		D	194659.26+270940.4
19470+2710	BKO 81	AC	2015	5	173	84.7	11.39	12.65			194659.26+270940.4

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