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Doubles in session


Current system
16534-2025
WSI 86
HD 152311


Nearby doubles
39' : 16545-2100
ARA1120

48' : 16505-2001
UC 3240

50' : 16509-1950
B 1830AB

59' : 16519-2120
RSS 419

66' : 16523-1921
GWP2675

66' : 16525-1921
TDT 125

67' : 16539-1919
B 1838

69' : 16561-1928
KPP4018

74' : 16571-1932
SHJ 240AB

75' : 16585-2047
JKS 14

76' : 16555-2134
BU 241

79' : 16490-1936
HJ 4888AB

91' : 16539-1854
DON 815AB

92' : 16564-1904
GWP2680

92' : 16475-1945
LDS 571

93' : 16470-2006
OCC 453

94' : 16582-2121
ARA1496

100' : 16547-2203
BU 123

102' : 16593-1926
HDS2403

111' : 17012-2026
HJ 4911AB

117' : 17007-2121
OCC9163

121' : 16575-2211
BRT1498

123' : 16447-2029
ARA1119

125' : 16521-1820
DON 814

128' : 16578-2216
BRT1499

132' : 16523-1814
UC 3246



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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.

16534-2025 WSI 86 (HD 152311)

 
 
16h 53m 25.26s -20° 24' 55.8" P.A. 167.00 sep 0.4 mag 5.90,11.30 Sp G2IV-V dist. 26.94 pc (87.88 l.y.)
 
 
Coord 2000 16534-2025 Discov num WSI  86 Comp Coord arcsec 2000 16 53 25.26 -20 24 55.8
Date first 2008 Date last 2023 Obs 8
Pa first 167 Pa last 167.3 P.A. Now (θ) 167.3°
Sep first 0.4 Sep last 0.355 Sep. Now (ρ) 0.355"
Mag pri 5.90 Mag sec 11.30 delta mag (ΔM) 5.4 Spectral class G2IV-V (yellow)
Pri motion ra -058 Sec motion ra
Pri motion dec -027 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 152311 Constellation Ophiuchus SAO 184754 HIP 82621
Tycho2 6226-01945-1 Gaia DR2 4127420626087054976 HD 152311 HR 6269
BD BD-20 4572 Distance 26.94 Distance ly 87.88
 
 
ORBITAL ELEMENTS
 
 
Period (P)14.91y± 0.25 Periastron (T)2014.96y± 0.17 Semi-major axis (a)0.2697a± 0.0059
Eccentricity (e)0.502± 0.013 Inclination (i)132°± 2.3 Longitude of periastron (ω)26.7°± 5.9
Node (Ω)13.1°± 3 Notesn ReferenceTok2020e
Equinox Last observation Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 357.6 0.129
2001 276.4 0.114
2002 229.0 0.196
2003 210.6 0.277
2004 199.8 0.335
2005 191.7 0.371
2006 184.7 0.388
2007 178.0 0.388
2008 171.0 0.372
2009 163.1 0.344
2010 153.4 0.303
2011 140.2 0.253
2012 120.1 0.201
2013 87.8 0.160
2014 43.8 0.148
2015 351.9 0.125
2016 269.7 0.119
2017 226.7 0.204
2018 209.4 0.283
2019 199.0 0.339
2020 191.0 0.373
2021 184.1 0.389
2022 177.4 0.387
2023 170.3 0.370
2024 162.3 0.340
2025 152.4 0.299
2026 138.7 0.248
2027 117.8 0.196
2028 84.2 0.158
2029 39.6 0.148
2030 345.8 0.120
2031 263.5 0.125
2032 224.6 0.212
2033 208.3 0.289
2034 198.2 0.343
2035 190.4 0.375
2036 183.5 0.389
2037 176.7 0.386
2038 169.6 0.368
2039 161.5 0.337
2040 151.3 0.294
2041 137.2 0.244
2042 115.4 0.192
2043 80.5 0.156
2044 35.4 0.147
2045 339.3 0.116
2046 257.9 0.132
2047 222.6 0.220
2048 207.2 0.295
2049 197.4 0.347
2050 189.7 0.377


 
 grafico orbita
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
wds16534-2025a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic