20279+0958 AG  256AB

Coord 2000	20279+0958		Discov num	AG  256		Comp	AB		Coord arcsec 2000	20 27 55.81 +09 57 34.9
Date first	1895		Date last	2018		Obs	27
Pa first	355		Pa last	351		P.A. Now (θ)	351°
Sep first	5.8		Sep last	5.2		Sep. Now (ρ)	5.2"
Mag pri	9.44		Mag sec	10.61		delta mag (ΔM)	1.17		Spectral class	A2 (white)
Pri motion ra	+010		Sec motion ra	+012
Pri motion dec	+001		Sec motion dec	+001
Notes	N V (See Notes, Proper motion indicates physical)

rPM=0.166 (< 0.3, Physical double) This double is physical.

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show			20 27 56 +09 57 35	AG 256 AB	2018	27	351	5.2	9.44	10.61	1.17		<===
Show			20 27 56 +09 57 35	AG 256 AC	2015	12	225	99.2	9.44	11.14	1.70

Triple system
3 visible stars in this system

Precise pa	351.4		Precise sep	5.214		Constellation	Delphinus		Tycho2	1091-01624-1
Gaia DR2	1753624980773496064		HD	194936

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20279+0958	AG 256	AB	2000	17	352	4.9	9.44	10.61	A2	D	202755.81+095734.9
20279+0958	AG 256	AB	2010	18	352	4.9	9.44	10.61	A2	D	202755.81+095734.9
20279+0958	AG 256	AB	2011	19	351	5.0	9.44	10.61	A2	N D	202755.81+095734.9
20279+0958	AG 256	AB	2016	22	352	5.1	9.44	10.61	A2	N	202755.81+095734.9
20279+0958	AG 256	AB	2018	26	351	5.2	9.44	10.61	A2	N	202755.81+095734.9

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