20197+4151 MMA   3

Coord 2000	20197+4151		Discov num	MMA   3		Comp			Coord arcsec 2000	20 19 39.66 +41 51 10.6
Date first	1983		Date last	2015		Obs	11
Pa first	104		Pa last	105		P.A. Now (θ)	105°
Sep first	11.1		Sep last	11.0		Sep. Now (ρ)	11"
Mag pri	11.80		Mag sec	13.50		delta mag (ΔM)	1.7		Spectral class
Pri motion ra	-005		Sec motion ra	-010
Pri motion dec	-009		Sec motion dec	-015
Notes

rPM=0.433 Nature of this double is uncertain.

Precise pa	105.4		Precise sep	10.951		Constellation	Cygnus		Tycho2	3159-00108-1
Gaia DR2	03429042688

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20197+4151	MMA 3		2009	1	107	10.6	11.80	13.50			201939.66+415110.6
20197+4151	MMA 3		2015	7	105	10.9	11.80	13.50			201939.66+415110.6

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