15457-6529 RST 792 (HD 140081)

 
 
15h 45m 42.08s -65° 29' 07.6" P.A. 74.00 sep 0.1 mag 8.96,9.72 Sp F7V dist. 100.4 pc (327.5 l.y.)
 
 
Coord 2000 15457-6529 Discov num RST 792 Comp Coord arcsec 2000 15 45 42.08 -65 29 07.6
Date first 1930 Date last 2021 Obs 6
Pa first 111 Pa last 74 P.A. Now (θ) 74°
Sep first 0.3 Sep last 0.092 Sep. Now (ρ) 0.092"
Mag pri 8.96 Mag sec 9.72 delta mag (ΔM) 0.76 Spectral class F7V (yellow-white)
Pri motion ra -047 Sec motion ra
Pri motion dec -051 Sec motion dec
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 140081 Constellation Triangulum Australe HIP 77189 Tycho2 9031-03195-1
Gaia DR2 5825473089464938368 HD 140081 CP CP-65 3133 Distance 100.4
Distance ly 327.5
 
 
ORBITAL ELEMENTS
 
 
Period (P)174y± 75 Periastron (T)2018.45y± 0.1 Semi-major axis (a)0.396a± 0.086
Eccentricity (e)0.967± 0.01 Inclination (i)76°± 0 Longitude of periastron (ω)257.6°± 3.5
Node (Ω)61.5°± 3.4 Notes ReferenceTok2021f
Equinox Last observation2021 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 157.7 0.102
2001 159.7 0.099
2002 161.7 0.096
2003 164.0 0.094
2004 166.3 0.091
2005 168.8 0.088
2006 171.5 0.085
2007 174.4 0.082
2008 177.4 0.080
2009 180.7 0.077
2010 184.2 0.074
2011 188.0 0.071
2012 192.1 0.068
2013 196.6 0.065
2014 201.5 0.062
2015 207.0 0.058
2016 213.5 0.053
2017 221.5 0.046
2018 234.8 0.030
2019 63.3 0.038
2020 70.4 0.070
2021 73.5 0.090
2022 75.6 0.105
2023 77.3 0.118
2024 78.6 0.128
2025 79.7 0.138
2026 80.7 0.147
2027 81.6 0.154
2028 82.4 0.162
2029 83.1 0.168
2030 83.8 0.174


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



 
 


wds15457-6529a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic