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Doubles in session

Current system

20598+4731
STF 2743 AB
59 Cyg

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Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

20598+4731 STF 2743 AB (59 Cyg)

20^h 59^m 49.55^s +47° 31' 15.4" P.A. 353.00 sep 21.0 mag 4.74,9.43 Sp B1ne dist. 434.78 pc (1418.25 l.y.)

Coord 2000	20598+4731		Discov num	STF2743		Comp	AB		Coord arcsec 2000	20 59 49.55 +47 31 15.4
Date first	1828		Date last	2012		Obs	33
Pa first	352		Pa last	353		P.A. Now (θ)	353°
Sep first	16.0		Sep last	21		Sep. Now (ρ)	21"
Mag pri	4.74		Mag sec	9.43		delta mag (ΔM)	4.69		Spectral class	B1ne (blue-white)
Pri motion ra	+007		Sec motion ra	+008
Pri motion dec	+003		Sec motion dec	+006
Notes	N (See Notes)

rPM=0.316

Nature of this double is uncertain.

20598+4731 SYSTEM COMPONENTS

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show		50335	20 59 50 +47 31 15	MCA 65 Aa,Ab	2015	29	334	0.1	4.80	7.64	2.84	Y
Show	59 Cyg	50335	20 59 50 +47 31 15	STF 2743 AB	2012	33	353	21.0	4.74	9.43	4.69		<===
Show		50335	20 59 50 +47 31 15	STF 2743 AC	2012	18	140	26.5	4.74	11.62	6.88
Show		50335	20 59 50 +47 31 15	STF 2743 AD	2012	5	222	39.3	4.74	11.20	6.46
Show		50335	20 59 50 +47 31 15	STF 2743 AE	2003	5	59	70.6	4.74	12.02	7.28

Sextuple system
5 estimated visually detectable stars in this system

OTHER CATALOGS AND DESIGNATIONS

Name	59 Cyg		Var name	V832 Cyg		Constellation	Cygnus		SAO	50335
HIP	103632		Tycho2	3579-04461-1		Gaia DR2	2163949388695291136		HD	200120
HR	8047		GC	29327		ADS	14526		BD	BD+46 3133
Flamsteed	59 Cygni		Flamsteed name	59 Cyg		FK5	1551		Distance	434.78
Distance ly	1418.25