20093+3529 SEI 923 AC

20^h 09^m 14.32^s +35° 29' 01.9" P.A. 93.00 sep 37.4 mag 7.78,11.26 Sp B0.5IV dist. 387.6 pc (1264.35 l.y.)

Coord 2000	20093+3529		Discov num	SEI 923		Comp	AC		Coord arcsec 2000	20 09 14.32 +35 29 01.9
Date first	1896		Date last	2016		Obs	13
Pa first	93		Pa last	92.9		P.A. Now (θ)	92.9°
Sep first	37.5		Sep last	37.4		Sep. Now (ρ)	37.4"
Mag pri	7.78		Mag sec	11.26		delta mag (ΔM)	3.48		Spectral class	B0.5IV (blue-white)
Pri motion ra	-003		Sec motion ra	-002
Pri motion dec	-005		Sec motion dec	-007
Notes

rPM=0.307

Nature of this double is uncertain.

20093+3529 SYSTEM COMPONENTS

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show	HD 191566	69512	20 09 14 +35 29 02	STF 2639 AB	2018	57	301	5.8	7.78	8.67	0.89
Show		69512	20 09 14 +35 29 02	SEI 923 AC	2016	13	93	37.4	7.78	11.26	3.48		<===
Show			20 09 17 +35 28 60	SEI 924 CD	2016	16	207	27.8	11.26	11.61	0.35

Quadruple system
4 estimated visually detectable stars in this system

OTHER CATALOGS AND DESIGNATIONS

Constellation	Cygnus		SAO	69512		HIP	99283		Tycho2	2679-00447-1
Gaia DR2	2058844907537751680		HD	191566		BD	BD+35 3994		Distance	387.6
Distance ly	1264.35