19520+3142 ES  355

Coord 2000	19520+3142		Discov num	ES  355		Comp			Coord arcsec 2000	19 52 00.21 +31 42 26.2
Date first	1906		Date last	2015		Obs	8
Pa first	295		Pa last	292		P.A. Now (θ)	292°
Sep first	13.1		Sep last	13.3		Sep. Now (ρ)	13.3"
Mag pri	7.83		Mag sec	13.40		delta mag (ΔM)	5.57		Spectral class	B9IV (blue-white)
Pri motion ra	-001		Sec motion ra
Pri motion dec	-001		Sec motion dec
Notes

Nature of this double is uncertain.

Precise pa	292.4		Precise sep	13.321		Constellation	Cygnus		SAO	68987
HIP	97760		Tycho2	2669-00718-1		Gaia DR2	39286341120		HD	188035
BD	BD+31 3814		Distance	505.05		Distance ly	1647.47

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
19520+3142	ES 355		1998	2	293	13.4	7.80	13.40	B9IV	D	195200.21+314226.2
19520+3142	ES 355		2002	3	293	13.3	7.80	13.40	B9IV	D	195200.21+314226.2
19520+3142	ES 355		2010	4	290	12.4	7.83	13.40	B9IV		195200.21+314226.2
19520+3142	ES 355		2015	8	293	13.3	7.83	13.40	B9IV		195200.21+314226.2

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