19539+3906 SEI 718

Coord 2000	19539+3906		Discov num	SEI 718		Comp			Coord arcsec 2000	19 53 51.79 +39 06 25.8
Date first	1896		Date last	2010		Obs	6
Pa first	351		Pa last	354		P.A. Now (θ)	354°
Sep first	15.3		Sep last	15.8		Sep. Now (ρ)	15.8"
Mag pri	8.04		Mag sec	11.70		delta mag (ΔM)	3.66		Spectral class	B9 (blue-white)
Pri motion ra	+002		Sec motion ra	+004
Pri motion dec	-002		Sec motion dec	+003
Notes

rPM=1.077 This double is not physical.

Precise pa	353.8		Precise sep	15.79		Cdsa2 id	SEI 718		Constellation	Cygnus
Ra deg	19.897719444444444		De deg	39.10716666666667		last precise pa	353.8		last precise sep	15.79

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
19539+3906	SEI 718		1998	4	354	15.8	8.20	11.70	B9	D	195351.79+390625.8
19539+3906	SEI 718		2002	5	354	16.0	8.20	11.70	B9	D	195351.79+390625.8
19539+3906	SEI 718		2010	6	354	15.2	8.04	11.70	B9		195351.79+390625.8

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