19321+2816 BU  652AB

Coord 2000	19321+2816		Discov num	BU  652		Comp	AB		Coord arcsec 2000	19 32 05.91 +28 16 00.3
Date first	1878		Date last	2015		Obs	13
Pa first	331		Pa last	305		P.A. Now (θ)	305°
Sep first	4.8		Sep last	5.5		Sep. Now (ρ)	5.5"
Mag pri	7.67		Mag sec	13.30		delta mag (ΔM)	5.63		Spectral class	A0 (white)
Pri motion ra	+002		Sec motion ra
Pri motion dec	-019		Sec motion dec
Notes	N (See Notes)

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			19321+2816	BU 652	AB	1878	2015	13	305	5.5	7.67	13.30	5.63		<===
Show			19321+2816	STF2539	AC	1783	2015	37	3	5.4	7.67	9.78	2.11
Show			19321+2816	FOX 242	AD	1874	2015	15	242	55.4	7.67	12.02	4.35
Show			19321+2816	STF2539	BC	1879	2015	10	66	5.3	13.30	9.78	3.52
Show			19321+2816	FOX 242	DE	1913	2015	9	226	6.6	11.30	13.30	2.00

Quintuple system
5 visible stars in this system

Precise pa	304.9		Precise sep	5.523		Constellation	Cygnus		SAO	87325
HIP	96083		Tycho2	2150-00120-1		Gaia DR2	77961760896		HD	184172
BD	BD+27 3421		Distance	161.03		Distance ly	525.28

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
19321+2816	BU 652	AB	2002	9	305	5.4	7.67	12.70	A0	D	193205.91+281600.5
19321+2816	BU 652	AB	2012	10	305	5.4	7.67	13.30	A0	N D	193205.91+281600.5
19321+2816	BU 652	AB	2015	11	305	5.6	7.67	13.30	A0	N	193205.91+281600.3

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