20113+3731 ALI 657

Coord 2000	20113+3731		Discov num	ALI 657		Comp			Coord arcsec 2000	20 11 17.70 +37 30 50.0
Date first	1933		Date last	2015		Obs	12
Pa first	286		Pa last	281		P.A. Now (θ)	281°
Sep first	11.4		Sep last	10.6		Sep. Now (ρ)	10.6"
Mag pri	11.21		Mag sec	11.34		delta mag (ΔM)	0.13		Spectral class	F0 (yellow-white)
Pri motion ra	-002		Sec motion ra	-002
Pri motion dec	-005		Sec motion dec	-004
Notes

rPM=0.186 (< 0.3, Physical double) This double is physical.

Precise pa	281.1		Precise sep	10.643		Constellation	Cygnus		Tycho2	3151-01555-1
Gaia DR2	01931856256

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20113+3731	ALI 657		1998	4	281	10.7	11.21	11.34		D	201117.70+373050.0
20113+3731	ALI 657		2007	5	281	10.9	11.21	11.34		D	201117.70+373050.0
20113+3731	ALI 657		2008	6	277	10.9	11.21	11.34		D	201117.70+373050.0
20113+3731	ALI 657		2010	8	276	11.5	11.21	11.34	F0		201117.70+373050.0
20113+3731	ALI 657		2015	8	281	10.6	11.21	11.34	F0		201117.70+373050.0

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