14396-6050 RHD 1 AB (Rigil Kentaurus)

 
 
14h 39m 36.50s -60 50' 02.3" P.A. 344.00 sep 5.3 mag -0.01,1.33 Sp G2V+K1V dist. 1.32 pc (4.31 l.y.)
 
 
Coord 2000 14396-6050 Discov num RHD   1 Comp AB Coord arcsec 2000 14 39 36.50 -60 50 02.3
Date first 1752 Date last 2019 Obs 480
Pa first 218 Pa last 343.7 P.A. Now (θ) 1.8°
Sep first 20.5 Sep last 5.279 Sep. Now (ρ) 7.451"
Mag pri -0.01 Mag sec 1.33 delta mag (ΔM) 1.34 Spectral class G2V+K1V (yellow/yellow-orange)
Pri motion ra -368 Sec motion ra
Pri motion dec +047 Sec motion dec
Notes N O P (See Notes, Orbital solution, 100-year proper motion)
This double is physical.
 
 
14396-6050 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show Rigil Kentaurus 252838 14 39 36 -60 50 02 RHD 1 AB 2019 480 344 5.3 -0.01 1.33 1.34 Y <===
Show 252838 14 39 36 -60 50 02 LDS 494 AC 2016 4 212 999.9 0.14 12.70 12.56 Y
Show 14 29 43 -62 40 46 SCZ 1 Ca,Cb 1996 2 100 0.3 11.10 18.00 6.90
Quadruple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Common name Rigil Kentaurus Constellation Centaurus SAO 252838 HIP 71683
Tycho2 9007-05849-1 Gaia DR2 5877748648286736896 HD 128620 HR 5459
GC 19728 GL Gl 559A CP CP-60 5483 Bayer Alpha Centauri
Bayer name Alp Cen FK5 538 Distance 1.32 Distance ly 4.31
Bayer greek α Cen
Other names Rigil Kent, Rigel Kentaurus, Toliman
Meaning foot of the centaur
 
 
ORBITAL ELEMENTS
 
 
Period (P)79.91y± 0.013 Periastron (T)1955.66y± 0.014 Semi-major axis (a)17.66a± 0.026
Eccentricity (e)0.524± 0.0011 Inclination (i)79.32°± 0.044 Longitude of periastron (ω)232.3°± 0.11
Node (Ω)204.75°± 0.087 Notesn ReferencePbx2016
Equinox2000 Last observation2014 Grade2(1=Definitive, 9=Indet.)
label theta rho
2000 222.3 14.161
2001 223.4 13.472
2002 224.7 12.765
2003 226.2 12.041
2004 227.8 11.303
2005 229.7 10.554
2006 231.8 9.797
2007 234.3 9.036
2008 237.3 8.276
2009 240.8 7.525
2010 245.2 6.792
2011 250.5 6.092
2012 257.2 5.443
2013 265.6 4.874
2014 276.0 4.421
2015 288.2 4.129
2016 301.6 4.034
2017 315.0 4.151
2018 327.1 4.460
2019 337.2 4.920
2020 345.4 5.486
2021 352.1 6.116
2022 357.4 6.780
2023 1.8 7.451
2024 5.5 8.109
2025 8.6 8.731
2026 11.3 9.296
2027 13.8 9.781
2028 16.0 10.157
2029 18.1 10.392
2030 20.1 10.444


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



 
 


wds14396-6050c.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic