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Doubles in session

Current system

21118+5959
WAL 137 AB,E

Selections

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

21118+5959 WAL 137 AB,E

21^h 11^m 48.24^s +59° 59' 11.8" P.A. 46.00 sep 61.5 mag 6.09,10.30 Sp B0II dist. 1315.79 pc (4292.11 l.y.)

Coord 2000	21118+5959		Discov num	WAL 137		Comp	AB,E		Coord arcsec 2000	21 11 48.24 +59 59 11.8
Date first	1897		Date last	2017		Obs	12
Pa first	46		Pa last	46		P.A. Now (θ)	46°
Sep first	61.8		Sep last	61.458		Sep. Now (ρ)	61.458"
Mag pri	6.09		Mag sec	10.30		delta mag (ΔM)	4.21		Spectral class	B0II (blue-white)
Pri motion ra	-003		Sec motion ra	-003
Pri motion dec	-004		Sec motion dec	-005
Notes	N (See Notes)

rPM=0.171 (< 0.3, Physical double)

This double is physical.

21118+5959 SYSTEM COMPONENTS

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show		33210	21 11 48 +59 59 12	MCA 67 Aa,Ab	2005	23	305	0.0	6.50	7.10	0.60	Y
Show	NSV13598	33210	21 11 48 +59 59 12	STF 2780 AB	2019	127	211	1.0	6.09	6.77	0.68
Show		33210	21 11 48 +59 59 12	STF 2780 AC	2017	18	211	118.8	6.09	8.90	2.81
Show		33210	21 11 48 +59 59 12	WAL 137 AB,D	2003	3	260	96.3	5.72	14.20	8.48
Show		33210	21 11 48 +59 59 12	WAL 137 AB,E	2017	12	46	61.5	6.09	10.30	4.21		<===

Septuple system
6 estimated visually detectable stars in this system

OTHER CATALOGS AND DESIGNATIONS

Var name	NSV13598		Constellation	Cepheus		SAO	33210		HIP	104642
Tycho2	3965-00880-1		Gaia DR2	2192287033139966848		HD	202214		HR	8119
ADS	14749		BD	BD+59 2334		Distance	1315.79		Distance ly	4292.11