09125-4032 B 1115 (HD 79400)

 
 
09h 12m 31.92s -40° 31' 53.6" P.A. 113.00 sep 0.2 mag 9.32,9.83 Sp G0V dist. 100.4 pc (327.5 l.y.)
 
 
Coord 2000 09125-4032 Discov num B  1115 Comp Coord arcsec 2000 09 12 31.92 -40 31 53.6
Date first 1928 Date last 2018 Obs 13
Pa first 23 Pa last 112.7 P.A. Now (θ) 112.7°
Sep first 0.4 Sep last 0.241 Sep. Now (ρ) 0.241"
Mag pri 9.32 Mag sec 9.83 delta mag (ΔM) 0.51 Spectral class G0V (yellow)
Pri motion ra +076 Sec motion ra
Pri motion dec -106 Sec motion dec
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 79400 Constellation Vela SAO 220950 HIP 45191
Tycho2 7682-02914-1 Gaia DR2 5428738748328622208 HD 79400 CD CD-40 5013
CP CP-40 3263 Distance 100.4 Distance ly 327.5
 
 
ORBITAL ELEMENTS
 
 
Period (P)646y Periastron (T)1998.32y Semi-major axis (a)1.024a
Eccentricity (e)0.776 Inclination (i)114.2° Longitude of periastron (ω)41.1°
Node (Ω)279.6° Notes ReferenceTok2014a
Equinox2000 Last observation2013 Grade5(1=Definitive, 9=Indet.)
label theta rho
2000 251.2 0.159
2001 244.7 0.145
2002 236.7 0.132
2003 227.2 0.121
2004 216.1 0.113
2005 203.8 0.109
2006 191.2 0.110
2007 179.2 0.116
2008 168.7 0.125
2009 159.9 0.137
2010 152.6 0.152
2011 146.7 0.168
2012 141.8 0.185
2013 137.8 0.203
2014 134.4 0.221
2015 131.5 0.239
2016 129.1 0.257
2017 126.9 0.275
2018 125.1 0.293
2019 123.4 0.311
2020 121.9 0.328
2021 120.6 0.346
2022 119.4 0.363
2023 118.3 0.380
2024 117.3 0.396
2025 116.4 0.413
2026 115.5 0.429
2027 114.7 0.445
2028 114.0 0.460
2029 113.3 0.476
2030 112.6 0.491


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



 
 


wds09125-4032b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic