20212+3745 SLE1011

Coord 2000	20212+3745		Discov num	SLE1011		Comp			Coord arcsec 2000	20 21 13.55 +37 45 07.4
Date first	1985		Date last	2015		Obs	8
Pa first	37		Pa last	37		P.A. Now (θ)	37°
Sep first	7.6		Sep last	7.8		Sep. Now (ρ)	7.8"
Mag pri	13.10		Mag sec	14.10		delta mag (ΔM)	1		Spectral class
Pri motion ra	-007		Sec motion ra	+008
Pri motion dec	-003		Sec motion dec	-001
Notes	R (Red magnitudes)

Visually invisible, K-band or other infrared star rPM=1.877 This double is not physical.

Precise pa	36.9		Precise sep	7.82		Constellation	Cygnus		SAO	69873
Gaia DR2	61357458432

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20212+3745	SLE1011		1998	2	37	7.9	12.30	12.90		D	202113.44+374500.6
20212+3745	SLE1011		2002	3	37	7.9	13.10	14.10		R	202113.55+374507.4
20212+3745	SLE1011		2015	4	37	7.8	13.10	14.10		R	202113.55+374507.4

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