17286-2531 BU 129 (HD 158140)

 
 
17h 28m 38.77s -25° 30' 38.4" P.A. 350.00 sep 0.2 mag 7.45,8.48 Sp F3IV/V dist. 103.63 pc (338.04 l.y.)
 
 
Coord 2000 17286-2531 Discov num BU  129 Comp Coord arcsec 2000 17 28 38.77 -25 30 38.4
Date first 1873 Date last 2021 Obs 39
Pa first 100 Pa last 349.7 P.A. Now (θ) 349.7°
Sep first 1.5 Sep last 0.173 Sep. Now (ρ) 0.173"
Mag pri 7.45 Mag sec 8.48 delta mag (ΔM) 1.03 Spectral class F3IV/V (yellow-white)
Pri motion ra +004 Sec motion ra +004
Pri motion dec -031 Sec motion dec -031
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 158140 Constellation Ophiuchus SAO 185433 HIP 85521
Tycho2 6830-00074-1 Gaia DR2 4109811809972185728 HD 158140 GC 23665
ADS 10564 CD CD-2512179 CP CP-25 6034 Distance 103.63
Distance ly 338.04
 
 
ORBITAL ELEMENTS
 
 
Period (P)356y Periastron (T)2013.7y Semi-major axis (a)0.688a
Eccentricity (e)0.862 Inclination (i)52.4° Longitude of periastron (ω)126.5°
Node (Ω)133° Notes ReferenceTok2018b
Equinox2000 Last observation2017 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 134.9 0.336
2001 136.3 0.318
2002 137.9 0.299
2003 139.6 0.279
2004 141.7 0.259
2005 144.1 0.237
2006 147.0 0.214
2007 150.6 0.190
2008 155.4 0.165
2009 161.8 0.138
2010 171.5 0.111
2011 187.2 0.085
2012 214.1 0.066
2013 251.0 0.064
2014 281.2 0.079
2015 300.3 0.099
2016 313.0 0.117
2017 322.6 0.132
2018 330.3 0.145
2019 336.9 0.155
2020 342.7 0.165
2021 347.9 0.174
2022 352.5 0.182
2023 356.8 0.190
2024 0.7 0.198
2025 4.3 0.206
2026 7.7 0.214
2027 10.8 0.222
2028 13.7 0.229
2029 16.5 0.237
2030 19.0 0.245
2031 21.4 0.252
2032 23.7 0.260
2033 25.8 0.268
2034 27.8 0.275
2035 29.7 0.283
2036 31.5 0.291
2037 33.2 0.299
2038 34.8 0.306
2039 36.4 0.314
2040 37.8 0.321
2041 39.2 0.329
2042 40.6 0.337
2043 41.8 0.344
2044 43.1 0.352
2045 44.2 0.359
2046 45.4 0.367
2047 46.4 0.374
2048 47.5 0.381
2049 48.5 0.389
2050 49.4 0.396


 
grafico orbita
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
wds17286-2531b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic