06312-7031 HDS 889 (HD 47213)

 
 
06h 31m 12.32s -70° 30' 57.9" P.A. 156.00 sep 0.1 mag 7.95,8.65 Sp F6V dist. 138.12 pc (450.55 l.y.)
 
 
Coord 2000 06312-7031 Discov num HDS 889 Comp Coord arcsec 2000 06 31 12.32 -70 30 57.9
Date first 1991 Date last 2023 Obs 7
Pa first 145 Pa last 155.9 P.A. Now (θ) 164.4°
Sep first 0.1 Sep last 0.119 Sep. Now (ρ) 0.125"
Mag pri 7.95 Mag sec 8.65 delta mag (ΔM) 0.7 Spectral class F6V (yellow-white)
Pri motion ra -028 Sec motion ra
Pri motion dec +034 Sec motion dec
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 47213 Constellation Mensa SAO 256311 HIP 31071
Tycho2 9181-01451-1 Gaia DR2 5278796457859305984 HD 47213 GC 8546
CP CP-70 533 Distance 138.12 Distance ly 450.55
 
 
ORBITAL ELEMENTS
 
 
Period (P)34.07y Periastron (T)2001.61y Semi-major axis (a)0.105a
Eccentricity (e)0.65 Inclination (i)135.4° Longitude of periastron (ω)71.8°
Node (Ω)58.5° Notes ReferenceTok2023a
Equinox2000 Last observation2023 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 63.9 0.054
2001 32.8 0.037
2002 319.1 0.027
2003 265.7 0.046
2004 245.5 0.067
2005 234.1 0.083
2006 226.1 0.095
2007 219.8 0.105
2008 214.5 0.112
2009 209.8 0.118
2010 205.5 0.123
2011 201.4 0.127
2012 197.6 0.129
2013 193.9 0.131
2014 190.2 0.132
2015 186.6 0.132
2016 183.0 0.132
2017 179.4 0.131
2018 175.7 0.130
2019 171.9 0.128
2020 168.1 0.126
2021 164.0 0.124
2022 159.8 0.121
2023 155.4 0.118
2024 150.8 0.115
2025 145.8 0.111
2026 140.5 0.107
2027 134.7 0.103
2028 128.5 0.098
2029 121.6 0.093
2030 113.9 0.088
2031 105.2 0.082
2032 95.0 0.075
2033 82.5 0.067
2034 65.4 0.055
2035 35.9 0.038
2036 325.1 0.027
2037 267.9 0.045
2038 246.5 0.065
2039 234.8 0.082
2040 226.6 0.094
2041 220.2 0.104
2042 214.8 0.112
2043 210.1 0.118
2044 205.8 0.123
2045 201.7 0.126
2046 197.8 0.129
2047 194.1 0.131
2048 190.5 0.132
2049 186.9 0.132
2050 183.3 0.132


 
grafico orbita
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
wds06312-7031a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic