19537+3442 SEI 716

Coord 2000	19537+3442		Discov num	SEI 716		Comp			Coord arcsec 2000	19 53 39.39 +34 41 42.5
Date first	1894		Date last	2012		Obs	9
Pa first	115		Pa last	110		P.A. Now (θ)	110°
Sep first	23.0		Sep last	23.5		Sep. Now (ρ)	23.5"
Mag pri	11.63		Mag sec	12.57		delta mag (ΔM)	0.94		Spectral class
Pri motion ra	-012		Sec motion ra	-004
Pri motion dec	-017		Sec motion dec	-007
Notes

rPM=0.615 Nature of this double is uncertain.

Precise pa	110.3		Precise sep	23.52		Constellation	Cygnus		last precise pa	110.3
last precise sep	23.52

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
19537+3442	SEI 716		1998	5	111	23.1	10.50	11.00		D	195339.39+344142.5
19537+3442	SEI 716		2002	6	111	23.1	10.50	11.00		D	195339.39+344142.5
19537+3442	SEI 716		2012	7	110	23.5	10.50	11.00		D	195339.39+344142.5

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