stampa
Login

A workbench to forge your own double stars?
Create your account here!


Search



Actions
Advanced Search
Go to Simbad
New report
New measure
Login


Computed Lists
Populars
Latest Populars
Doubles in session


Current system
21023+3931
WRD 4 AF


Nearby doubles
17' : 21018+3916
STF2746

17' : 21029+3946
SEI1379

17' : 21020+3914
LV 9

21' : 21014+3948
SEI1370

21' : 21008+3940
SEI1364

22' : 21012+3949
SEI1369

23' : 21042+3924
SEI1389

31' : 21031+3959
LDS2483AB

33' : 21010+3959
A 1438

34' : 20595+3923
SEI1357

36' : 21047+3908
SEI1393

36' : 21051+3914
ES 1987

36' : 20593+3924
TOB 207

36' : 21009+3900
SEI1365

36' : 21054+3937
CRB 137

36' : 20593+3925
SEI1353

37' : 21037+3857
TDT2720

38' : 21015+3855
SEI1371

38' : 20591+3932
TOB 205

38' : 20592+3941
SEI1351AB

39' : 20596+3953
SEI1358

40' : 20589+3931
SEI1348

40' : 21058+3929
A 2691AB

40' : 20592+3946
BKO 481

40' : 20591+3944
BKO 480

42' : 20590+3945
SEI1349



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.

21023+3931 WRD 4 AF

 
 
21h 02m 20.95s +39° 30' 32.5" P.A. 223.00 sep 101.8 mag 6.62,12.45 Sp K3II-III dist. 223.71 pc (729.74 l.y.)
 
 
Coord 2000 21023+3931 Discov num WRD   4 Comp AF Coord arcsec 2000 21 02 20.95 +39 30 32.5
Date first 1875 Date last 2015 Obs 5
Pa first 230 Pa last 222.5 P.A. Now (θ) 222.5°
Sep first 95.0 Sep last 101.832 Sep. Now (ρ) 101.832"
Mag pri 6.62 Mag sec 12.45 delta mag (ΔM) 5.83 Spectral class K3II-III (yellow-orange)
Pri motion ra +002 Sec motion ra -012
Pri motion dec +001 Sec motion dec -013
Notes N (See Notes)
rPM=1.119
This double is not physical.
 
 
21023+3931 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show HD 200465 70818 21 02 21 +39 30 32 H 4 113 AB 2018 37 299 18.9 6.62 9.49 2.87
Show 70818 21 02 21 +39 30 32 H 4 113 AC 2012 10 248 26.7 6.62 12.50 5.88
Show 70818 21 02 21 +39 30 32 SMY 6 AD 2015 8 141 57.0 6.62 12.61 5.99
Show 70818 21 02 21 +39 30 32 SMY 6 AE 2018 10 87 95.7 6.62 10.88 4.26
Show 70818 21 02 21 +39 30 32 WRD 4 AF 2015 5 223 101.8 6.62 12.45 5.83 <===
Show 70818 21 02 21 +39 30 32 WRD 4 AG 1875 1 230 95.0 6.62 13.50 6.88
Show 70818 21 02 21 +39 30 32 FYM 114 AI 2012 3 277 41.1 6.62 15.20 8.58
Show 21 02 29 +39 30 38 WRD 4 ED 2015 7 230 77.7 10.88 12.61 1.73
Show 21 02 29 +39 30 38 WRD 4 EH 2015 9 159 37.4 10.88 12.84 1.96
Ninefold system
9 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Cygnus SAO 70818 HIP 103822 Tycho2 3172-01764-1
Gaia DR2 1872982701745880320 HD 200465 BD BD+38 4321 Distance 223.71
Distance ly 729.74