20121+3603 SEI 990

Coord 2000	20121+3603		Discov num	SEI 990		Comp			Coord arcsec 2000	20 12 03.70 +36 02 31.0
Date first	1896		Date last	2015		Obs	15
Pa first	297		Pa last	296		P.A. Now (θ)	296°
Sep first	26.8		Sep last	26.7		Sep. Now (ρ)	26.7"
Mag pri	10.33		Mag sec	10.82		delta mag (ΔM)	0.49		Spectral class	F8III (yellow-white)
Pri motion ra	+015		Sec motion ra	+014
Pri motion dec	-018		Sec motion dec	-018
Notes

rPM=0.043 (< 0.3, Physical double) This double is physical.

Precise pa	295.8		Precise sep	26.693		Constellation	Cygnus		Tycho2	2683-02144-1
Gaia DR2	53001532672

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20121+3603	SEI 990		2002	8	295	26.7	10.33	10.82		D	201203.70+360231.0
20121+3603	SEI 990		2010	10	296	26.6	10.33	10.82	F8III		201203.70+360231.0
20121+3603	SEI 990		2015	11	296	26.7	10.33	10.82	F8III		201203.70+360231.0

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