20313+2353 BKO 451AC

Coord 2000	20313+2353		Discov num	BKO 451		Comp	AC		Coord arcsec 2000	20 31 23.28 +23 53 36.5
Date first	1999		Date last	2015		Obs	4
Pa first	136		Pa last	137		P.A. Now (θ)	137°
Sep first	3.3		Sep last	3.4		Sep. Now (ρ)	3.4"
Mag pri	11.70		Mag sec	13.50		delta mag (ΔM)	1.8		Spectral class
Pri motion ra	-004		Sec motion ra	+013
Pri motion dec	-005		Sec motion dec	+000
Notes

rPM=1.363 This double is not physical.

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show			20 31 23 +23 53 36	POU 4559 AB	2015	5	177	7.6	11.75	13.10	1.35
Show			20 31 23 +23 53 36	BKO 451 AC	2015	4	137	3.4	11.70	13.50	1.80		<===

Triple system
3 visible stars in this system

Precise pa

137.3

Precise sep

3.37

Constellation

Vulpecula

Gaia DR2

1831356123535581696

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20313+2353	BKO 451	AC	2008	1	136	3.3	11.70	13.50			203123.28+235336.5
20313+2353	BKO 451	AC	2015	4	137	3.4	11.70	13.50			203123.28+235336.5

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