20057+2320 POU4210AC

Coord 2000	20057+2320		Discov num	POU4210		Comp	AC		Coord arcsec 2000	20 05 40.29 +23 20 26.9
Date first	1898		Date last	2015		Obs	5
Pa first	229		Pa last	286		P.A. Now (θ)	286°
Sep first	13.8		Sep last	13.8		Sep. Now (ρ)	13.8"
Mag pri	11.10		Mag sec	13.30		delta mag (ΔM)	2.2		Spectral class
Pri motion ra	-001		Sec motion ra
Pri motion dec	-007		Sec motion dec
Notes

Nature of this double is uncertain.

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show			20 05 40 +23 20 27	POU 4209 AB	2015	7	51	15.1	11.10	12.70	1.60
Show			20 05 40 +23 20 27	POU 4210 AC	2015	5	286	13.8	11.10	13.30	2.20		<===
Show			20 05 40 +23 20 27	BKO 759 AD	2009	1	222	1.6	11.10	12.00	0.90

Quadruple system
4 visible stars in this system

Precise pa	285.5		Precise sep	13.799		Constellation	Vulpecula		Tycho2	2154-02441-1
Gaia DR2	1833190379504456064

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20057+2320	POU4210	AC	1898	1	229	13.8	11.70	13.90			200540.30+232026.9
20057+2320	POU4210	AC	2009	2	286	13.6	11.70	13.90			200540.30+232026.9
20057+2320	POU4210	AC	2010	5	288	13.5	11.10	13.30			200540.29+232026.9
20057+2320	POU4210	AC	2015	5	286	13.8	11.10	13.30			200540.29+232026.9

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