19563+3708 SEI 739

Coord 2000	19563+3708		Discov num	SEI 739		Comp			Coord arcsec 2000	19 56 19.45 +37 08 09.4
Date first	1896		Date last	2015		Obs	11
Pa first	172		Pa last	171		P.A. Now (θ)	171°
Sep first	23.1		Sep last	23.5		Sep. Now (ρ)	23.5"
Mag pri	11.72		Mag sec	12.38		delta mag (ΔM)	0.66		Spectral class
Pri motion ra	-004		Sec motion ra	-002
Pri motion dec	-005		Sec motion dec	-005
Notes

rPM=0.312 Nature of this double is uncertain.

Precise pa	171.1		Precise sep	23.499		Constellation	Cygnus		Tycho2	2681-00799-1
Gaia DR2	22704795648

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
19563+3708	SEI 739		1998	4	171	23.5	11.72	12.38		D	195619.45+370809.4
19563+3708	SEI 739		2002	5	171	23.5	11.72	12.38		D	195619.45+370809.4
19563+3708	SEI 739		2010	6	171	23.5	11.72	12.38			195619.45+370809.4
19563+3708	SEI 739		2015	7	171	23.5	11.72	12.38			195619.45+370809.4

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