19457+3605 STF 2578 AD

19^h 45^m 39.65^s +36° 05' 27.6" P.A. 70.00 sep 95.0 mag 6.37,12.39 Sp B9.5V dist. 300.3 pc (979.58 l.y.)

Coord 2000	19457+3605		Discov num	STF2578		Comp	AD		Coord arcsec 2000	19 45 39.65 +36 05 27.6
Date first	1900		Date last	2006		Obs	7
Pa first	71		Pa last	70.3		P.A. Now (θ)	70.3°
Sep first	95.2		Sep last	94.98		Sep. Now (ρ)	94.98"
Mag pri	6.37		Mag sec	12.39		delta mag (ΔM)	6.02		Spectral class	B9.5V (blue-white)
Pri motion ra	+002		Sec motion ra	+003
Pri motion dec	+007		Sec motion dec	+002
Notes	N (See Notes)

rPM=0.7

Nature of this double is uncertain.

19457+3605 SYSTEM COMPONENTS

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show	HD 186901	68805	19 45 40 +36 05 28	STF 2578 AB	2019	90	124	14.9	6.37	7.04	0.67
Show		68805	19 45 40 +36 05 28	STF 2578 AC	2006	9	356	44.3	6.37	12.49	6.12
Show		68805	19 45 40 +36 05 28	STF 2578 AD	2006	7	70	95.0	6.37	12.39	6.02		<===
Show		68805	19 45 40 +36 05 28	STF 2578 AF	2013	23	251	144.5	6.37	9.22	2.85
Show		68806	19 45 41 +36 05 19	STF 2578 BE	2015	4	75	11.4	7.04	14.00	6.96

Sextuple system
6 estimated visually detectable stars in this system

OTHER CATALOGS AND DESIGNATIONS

Constellation	Cygnus		SAO	68805		HIP	97228		Tycho2	2668-00996-1
Gaia DR2	2047894802517982592		HD	186901		HR	7529		ADS	12893
BD	BD+35 3786		Distance	300.3		Distance ly	979.58