19539+3923 SEI 719

Coord 2000	19539+3923		Discov num	SEI 719		Comp			Coord arcsec 2000	19 53 54.52 +39 22 40.5
Date first	1895		Date last	2010		Obs	10
Pa first	60		Pa last	60		P.A. Now (θ)	60°
Sep first	16.1		Sep last	15.9		Sep. Now (ρ)	15.9"
Mag pri	11.51		Mag sec	12.23		delta mag (ΔM)	0.72		Spectral class
Pri motion ra	-002		Sec motion ra	-002
Pri motion dec	-002		Sec motion dec	+000
Notes

rPM=0.707 Nature of this double is uncertain.

Precise pa	59.9		Precise sep	15.93		Constellation	Cygnus		Tycho2	3141-00015-1
last precise pa	59.9		last precise sep	15.93

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
19539+3923	SEI 719		2006	8	58	16.4	11.51	12.23		D	195354.52+392240.5
19539+3923	SEI 719		2010	10	60	15.9	11.51	12.23			195354.52+392240.5

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