20021+3135 SEI 798

Coord 2000	20021+3135		Discov num	SEI 798		Comp			Coord arcsec 2000	20 02 07.38 +31 34 57.0
Date first	1893		Date last	2015		Obs	12
Pa first	214		Pa last	214		P.A. Now (θ)	214°
Sep first	24.4		Sep last	24.3		Sep. Now (ρ)	24.3"
Mag pri	12.14		Mag sec	12.09		delta mag (ΔM)	0.05		Spectral class
Pri motion ra	+001		Sec motion ra	+000
Pri motion dec	-003		Sec motion dec	+001
Notes

rPM=1.304 This double is not physical.

Precise pa	213.6		Precise sep	24.273		Constellation	Cygnus		SAO	69294
Tycho2	2670-00254-1		Gaia DR2	58462930688

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20021+3135	SEI 798		1998	5	214	24.3	11.98	11.98		D	200207.38+313457.0
20021+3135	SEI 798		2002	6	214	24.3	11.98	11.98		D	200207.38+313457.0
20021+3135	SEI 798		2010	7	214	24.3	12.14	12.09			200207.38+313457.0
20021+3135	SEI 798		2015	8	214	24.3	12.14	12.09			200207.38+313457.0

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