stampa
Login

Filter only those doubles you can observe? Yes, you can!
Register here


Search



Actions
Advanced Search
Go to Simbad
New report
New measure
Login


Computed Lists
Populars
Latest Populars
Doubles in session


Current system
13539-1440
RST 3852
HD 121136


Nearby doubles
15' : 13549-1442
HJ 2691

29' : 13542-1508
SKI 7

37' : 13562-1429
GWP2148

41' : 13560-1505
TDS9036

55' : 13551-1531
GWP2139

56' : 13542-1535
UC 2631

59' : 13500-1455
GWP2098

63' : 13549-1541
GWP2136

64' : 13568-1353
RST3855

67' : 13579-1409
UC 2647

67' : 13540-1333
GWP2123

72' : 13499-1523
BRT 582

74' : 13541-1326
GWP2125AB

81' : 13542-1601
GWP2128

82' : 13560-1324
GWP2147

88' : 13558-1602
UC 2637

93' : 13526-1610
SKI 12AB

99' : 13560-1306
GWP2146

100' : 13565-1612
OCC 895

101' : 13481-1345
DEA 1

107' : 14012-1452
OCC 144

110' : 14000-1337
GWP2166

114' : 14014-1409
HJ 2696

116' : 14009-1536
GWP2176AB

119' : 13581-1621
NSN 421

121' : 14015-1528
GWP2182



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.

13539-1440 RST 3852 (HD 121136)

 
 
13h 53m 51.68s -14° 39' 50.8" P.A. 325.00 sep 0.2 mag 7.85,8.92 Sp F0/2V dist. 215.05 pc (701.49 l.y.)
 
 
Coord 2000 13539-1440 Discov num RST3852 Comp Coord arcsec 2000 13 53 51.68 -14 39 50.8
Date first 1937 Date last 2023 Obs 33
Pa first 140 Pa last 325 P.A. Now (θ) 320.3° (calc)
Sep first 0.3 Sep last 0.244 Sep. Now (ρ) 0.238" (calc)
Mag pri 7.85 Mag sec 8.92 delta mag (ΔM) 1.07 Spectral class F0/2V (yellow-white)
Pri motion ra +021 Sec motion ra
Pri motion dec -018 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 121136 Constellation Virgo SAO 158220 HIP 67580
Tycho2 5559-00643-1 Gaia DR2 6302015585120003712 HD 121136 BD BD-13 3786
Distance 215.05 Distance ly 701.49
 
 
ORBITAL ELEMENTS
 
 
Period (P)87.65y± 1.93 Periastron (T)1983.79y± 0.78 Semi-major axis (a)0.2097a± 0.0026
Eccentricity (e)0.2161± 0.0109 Inclination (i)126.3°± 1.3 Longitude of periastron (ω)30.8°± 5.4
Node (Ω)156.7°± 1.1 Notesn ReferenceTok2025b
Equinox Last observation2025 Grade2(1=Definitive, 9=Indet.)
label theta rho
2000 20.1 0.147
2001 15.5 0.155
2002 11.4 0.164
2003 7.7 0.172
2004 4.4 0.181
2005 1.3 0.189
2006 358.5 0.196
2007 355.9 0.204
2008 353.5 0.210
2009 351.2 0.216
2010 349.0 0.222
2011 346.9 0.227
2012 345.0 0.232
2013 343.1 0.236
2014 341.2 0.239
2015 339.4 0.242
2016 337.6 0.244
2017 335.9 0.246
2018 334.2 0.247
2019 332.5 0.248
2020 330.8 0.248
2021 329.1 0.248
2022 327.4 0.247
2023 325.7 0.245
2024 323.9 0.243
2025 322.1 0.241
2026 320.3 0.238
2027 318.4 0.235
2028 316.5 0.231
2029 314.5 0.227
2030 312.4 0.222
2031 310.3 0.217
2032 308.0 0.212
2033 305.6 0.207
2034 303.1 0.201
2035 300.5 0.195
2036 297.7 0.189
2037 294.7 0.183
2038 291.4 0.177
2039 288.0 0.171
2040 284.3 0.165
2041 280.4 0.160
2042 276.1 0.154
2043 271.6 0.149
2044 266.7 0.144
2045 261.5 0.140
2046 256.1 0.137
2047 250.4 0.134
2048 244.6 0.133
2049 238.6 0.132
2050 232.5 0.132


 
 grafico orbita
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
wds13539-1440b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic