20170+1538 CHE 269

Coord 2000	20170+1538		Discov num	CHE 269		Comp			Coord arcsec 2000	20 17 02.07 +15 38 03.8
Date first	1904		Date last	2016		Obs	19
Pa first	274		Pa last	285		P.A. Now (θ)	285°
Sep first	29.2		Sep last	26.9		Sep. Now (ρ)	26.9"
Mag pri	9.30		Mag sec	10.90		delta mag (ΔM)	1.6		Spectral class	A7+G3 (white/yellow)
Pri motion ra	-026		Sec motion ra	+001
Pri motion dec	-055		Sec motion dec	-006
Notes	U (Proper motion indicates non-physical)

Visually invisible, K-band or other infrared star rPM=0.92 This double is not physical.

Precise pa	285		Precise sep	26.929		Constellation	Delphinus		SAO	105920
Tycho2	1631-00209-1		Gaia DR2	28329545600		HD	355380

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20170+1538	CHE 269		2006	6	284	27.0	8.97	9.92		D	201702.07+153803.8
20170+1538	CHE 269		2008	7	284	27.2	8.97	9.92		D	201702.07+153803.8
20170+1538	CHE 269		2013	10	285	26.6	8.97	9.92			201702.07+153803.8
20170+1538	CHE 269		2016	13	285	26.9	9.30	10.90	A7+G3	U	201702.07+153803.8

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