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Doubles in session

Current system

21118+5959
WAL 137 AB,D

Selections

Full WDS
Binocular doubles
Binary Systems
Triple Systems
Quadruple Systems
Multiple Systems
Neglected List I
Neglected List II
Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

21118+5959 WAL 137 AB,D

21^h 11^m 48.24^s +59° 59' 11.8" P.A. 260.00 sep 96.3 mag 5.72,14.20 Sp B0II dist. 1315.79 pc (4292.11 l.y.)

Coord 2000	21118+5959		Discov num	WAL 137		Comp	AB,D		Coord arcsec 2000	21 11 48.24 +59 59 11.8
Date first	1944		Date last	2003		Obs	3
Pa first	250		Pa last	260.2		P.A. Now (θ)	260.2°
Sep first	90.0		Sep last	96.3		Sep. Now (ρ)	96.3"
Mag pri	5.72		Mag sec	14.20		delta mag (ΔM)	8.48		Spectral class	B0II (blue-white)
Pri motion ra	-003		Sec motion ra	-010
Pri motion dec	-004		Sec motion dec	+008
Notes	N (See Notes)

rPM=1.085

This double is not 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