10269+1931 COU 292 (HD 90460)

 
 
10h 26m 54.22s +19° 30' 44.9" P.A. 50.00 sep 0.2 mag 8.42,8.79 Sp F8 dist. 79.05 pc (257.86 l.y.)
 
 
Coord 2000 10269+1931 Discov num COU 292 Comp Coord arcsec 2000 10 26 54.22 +19 30 44.9
Date first 1968 Date last 2013 Obs 60
Pa first 41 Pa last 49.5 P.A. Now (θ) 16.2°
Sep first 0.2 Sep last 0.171 Sep. Now (ρ) 0.186"
Mag pri 8.42 Mag sec 8.79 delta mag (ΔM) 0.37 Spectral class F8 (yellow-white)
Pri motion ra -011 Sec motion ra
Pri motion dec -042 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 90460 Constellation Leo SAO 99125 HIP 51147
Tycho2 1423-00154-1 Gaia DR2 624535459414819584 HD 90460 BD BD+20 2486
Distance 79.05 Distance ly 257.86
 
 
ORBITAL ELEMENTS
 
 
Period (P)25.02y Periastron (T)1981.6y Semi-major axis (a)0.149a
Eccentricity (e)0.592 Inclination (i)138.4° Longitude of periastron (ω)215.1°
Node (Ω)61.7° Notesn ReferenceDoc2013e
Equinox2000 Last observation2006 Grade2(1=Definitive, 9=Indet.)
label theta rho
2000 3.0 0.158
2001 354.4 0.141
2002 343.4 0.124
2003 328.8 0.107
2004 309.0 0.091
2005 282.1 0.079
2006 245.8 0.067
2007 188.4 0.051
2008 124.7 0.066
2009 95.5 0.100
2010 81.0 0.132
2011 71.8 0.157
2012 64.9 0.178
2013 59.4 0.194
2014 54.6 0.206
2015 50.3 0.215
2016 46.2 0.220
2017 42.3 0.223
2018 38.4 0.223
2019 34.5 0.220
2020 30.4 0.215
2021 26.1 0.207
2022 21.4 0.198
2023 16.2 0.186
2024 10.2 0.173
2025 3.2 0.158
2026 354.6 0.141
2027 343.6 0.124
2028 329.1 0.107
2029 309.4 0.092
2030 282.7 0.079


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



 
 


wds10269%2B1931b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic