12111-5302 HU 1604 (HD 105856)

 
 
12h 11m 05.27s -53° 02' 17.2" P.A. 39.00 sep 0.2 mag 10.19,10.54 Sp F9V+G1V dist. 103.52 pc (337.68 l.y.)
 
 
Coord 2000 12111-5302 Discov num HU 1604 Comp Coord arcsec 2000 12 11 05.27 -53 02 17.2
Date first 1914 Date last 2021 Obs 14
Pa first 281 Pa last 38.6 P.A. Now (θ) 38.6°
Sep first 0.4 Sep last 0.193 Sep. Now (ρ) 0.193"
Mag pri 10.19 Mag sec 10.54 delta mag (ΔM) 0.35 Spectral class F9V+G1V (yellow-white/yellow)
Pri motion ra -076 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 105856 Constellation Centaurus SAO 239726 HIP 59395
Tycho2 8632-00218-1 Gaia DR2 6125076126677677952 HD 105856 CP CP-52 5302
Distance 103.52 Distance ly 337.68
 
 
ORBITAL ELEMENTS
 
 
Period (P)215.2y Periastron (T)2055.34y Semi-major axis (a)0.355a
Eccentricity (e)0.3 Inclination (i)56° Longitude of periastron (ω)15.6°
Node (Ω)103.7° Notesn ReferenceTok2023a
Equinox2000 Last observation2021 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 342.1 0.242
2001 344.0 0.237
2002 346.1 0.233
2003 348.2 0.228
2004 350.4 0.224
2005 352.7 0.220
2006 355.0 0.216
2007 357.5 0.212
2008 0.0 0.209
2009 2.6 0.206
2010 5.3 0.203
2011 8.1 0.201
2012 10.9 0.198
2013 13.8 0.196
2014 16.7 0.195
2015 19.7 0.194
2016 22.7 0.193
2017 25.8 0.192
2018 28.8 0.192
2019 31.9 0.192
2020 34.9 0.193
2021 37.9 0.194
2022 40.9 0.195
2023 43.8 0.196
2024 46.7 0.198
2025 49.6 0.200
2026 52.4 0.202
2027 55.1 0.205
2028 57.7 0.207
2029 60.3 0.210
2030 62.8 0.213
2031 65.3 0.216
2032 67.7 0.219
2033 70.0 0.222
2034 72.2 0.225
2035 74.4 0.228
2036 76.5 0.231
2037 78.6 0.234
2038 80.7 0.237
2039 82.6 0.239
2040 84.6 0.242
2041 86.5 0.244
2042 88.4 0.246
2043 90.2 0.247
2044 92.1 0.249
2045 93.9 0.250
2046 95.7 0.251
2047 97.4 0.252
2048 99.2 0.252
2049 101.0 0.252
2050 102.8 0.251


 
grafico orbita
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
wds12111-5302c.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic