12036-3901 SEE 143 (89 Cen)

 
 
12h 03m 36.35s -39° 00' 32.6" P.A. 332.00 sep 0.3 mag 7.05,7.65 Sp F7V dist. 45.98 pc (149.99 l.y.)
 
 
Coord 2000 12036-3901 Discov num SEE 143 Comp Coord arcsec 2000 12 03 36.35 -39 00 32.6
Date first 1897 Date last 2021 Obs 105
Pa first 225 Pa last 331.5 P.A. Now (θ) 300.3°
Sep first 0.7 Sep last 0.312 Sep. Now (ρ) 0.261"
Mag pri 7.05 Mag sec 7.65 delta mag (ΔM) 0.6 Spectral class F7V (yellow-white)
Pri motion ra -383 Sec motion ra -383
Pri motion dec -039 Sec motion dec -039
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name 89 Cen Constellation Centaurus SAO 203084 HIP 58799
Tycho2 7755-00116-1 HD 104747 GC 16471 CD CD-38 7479
CP CP-38 4972 Flamsteed 89 Centauri Flamsteed name 89 Cen Distance 45.98
Distance ly 149.99
 
 
ORBITAL ELEMENTS
 
 
Period (P)111y± 1.4 Periastron (T)1913y± 1.3 Semi-major axis (a)0.673a± 0.009
Eccentricity (e)0.579± 0.012 Inclination (i)155.3°± 2.1 Longitude of periastron (ω)285.4°± 7.1
Node (Ω)211°± 8.5 Notesn ReferenceTok2014a
Equinox2000 Last observation2013 Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 62.8 0.778
2001 60.9 0.763
2002 59.0 0.747
2003 57.0 0.731
2004 54.9 0.713
2005 52.8 0.695
2006 50.4 0.676
2007 48.0 0.656
2008 45.4 0.634
2009 42.6 0.612
2010 39.6 0.590
2011 36.3 0.565
2012 32.7 0.540
2013 28.8 0.514
2014 24.5 0.487
2015 19.6 0.459
2016 14.1 0.430
2017 7.8 0.400
2018 0.4 0.371
2019 351.8 0.342
2020 341.7 0.314
2021 329.7 0.290
2022 315.8 0.271
2023 300.3 0.261
2024 284.1 0.259
2025 268.4 0.267
2026 253.9 0.283
2027 241.3 0.304
2028 230.4 0.329
2029 221.1 0.354
2030 213.0 0.381


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



 
 


wds12036-3901b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic