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)205y Periastron (T)2049y Semi-major axis (a)0.341a
Eccentricity (e)0.431 Inclination (i)55.6° Longitude of periastron (ω)32.7°
Node (Ω)89.2° Notes ReferenceDoc2020d
Equinox2000 Last observation2018 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 343.3 0.226
2001 345.4 0.222
2002 347.5 0.219
2003 349.7 0.216
2004 352.0 0.213
2005 354.3 0.210
2006 356.7 0.207
2007 359.2 0.204
2008 1.7 0.202
2009 4.3 0.200
2010 6.9 0.198
2011 9.6 0.197
2012 12.3 0.196
2013 15.0 0.195
2014 17.8 0.194
2015 20.5 0.193
2016 23.3 0.193
2017 26.1 0.193
2018 28.9 0.193
2019 31.7 0.194
2020 34.5 0.194
2021 37.2 0.195
2022 39.9 0.196
2023 42.6 0.197
2024 45.3 0.198
2025 47.9 0.200
2026 50.5 0.201
2027 53.0 0.203
2028 55.6 0.204
2029 58.0 0.206
2030 60.5 0.207


 
grafico orbita
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.



 
 


wds12111-5302a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic