20165+4339 ES 1439

Coord 2000	20165+4339		Discov num	ES 1439		Comp			Coord arcsec 2000	20 16 29.92 +43 38 29.6
Date first	1915		Date last	2015		Obs	8
Pa first	29		Pa last	30		P.A. Now (θ)	30°
Sep first	1.6		Sep last	1.7		Sep. Now (ρ)	1.7"
Mag pri	11.35		Mag sec	11.61		delta mag (ΔM)	0.26		Spectral class
Pri motion ra	-005		Sec motion ra	-005
Pri motion dec	-011		Sec motion dec	-011
Notes	N (See Notes)

Visually invisible, K-band or other infrared star Nature of this double is uncertain.

Precise pa	29.5		Precise sep	1.668		Constellation	Cygnus		SAO	49403
Tycho2	3163-01582-1		Gaia DR2	45926352128

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20165+4339	ES 1439		1991	7	29	1.6	11.35	11.61		N	201629.92+433829.6
20165+4339	ES 1439		2015	8	30	1.7	11.35	11.61		N	201629.92+433829.6

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