09285+0903 STF 1356 (Ome Leo)

 
 
09h 28m 27.41s +09° 03' 24.4" P.A. 116.00 sep 0.9 mag 5.69,7.28 Sp F9IV dist. 33.17 pc (108.2 l.y.)
 
 
Coord 2000 09285+0903 Discov num STF1356 Comp Coord arcsec 2000 09 28 27.41 +09 03 24.4
Date first 1825 Date last 2021 Obs 691
Pa first 154 Pa last 116.3 P.A. Now (θ) 117.5°
Sep first 1.0 Sep last 0.92 Sep. Now (ρ) 0.926"
Mag pri 5.69 Mag sec 7.28 delta mag (ΔM) 1.59 Spectral class F9IV (yellow-white)
Pri motion ra +050 Sec motion ra +050
Pri motion dec -005 Sec motion dec -005
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name Ome Leo Constellation Leo SAO 117717 HIP 46454
Tycho2 0820-01635-1 HD 81858 HR 3754 GC 13062
ADS 7390 BD BD+09 2188 Bayer Omega Leonis Bayer name Ome Leo
Flamsteed 2 Leonis Flamsteed name 2 Leo Distance 33.17 Distance ly 108.2
Bayer greek ω Leo
 
 
ORBITAL ELEMENTS
 
 
Period (P)43089d (117.97y)± 26 Periastron (T)36649m (1959.219y)± 11 Semi-major axis (a)0.8599a± 0.0022
Eccentricity (e)0.5619± 0.0014 Inclination (i)65.347°± 0.093 Longitude of periastron (ω)302.54°± 0.14
Node (Ω)325.982°± 0.074 Notesn ReferenceMut2010b
Equinox2000 Last observation2008 Grade2(1=Definitive, 9=Indet.)
label theta rho
2000 84.5 0.578
2001 86.8 0.593
2002 88.9 0.609
2003 91.0 0.624
2004 92.9 0.640
2005 94.8 0.656
2006 96.5 0.673
2007 98.2 0.689
2008 99.8 0.705
2009 101.3 0.721
2010 102.8 0.738
2011 104.2 0.754
2012 105.5 0.770
2013 106.8 0.785
2014 108.1 0.801
2015 109.3 0.816
2016 110.4 0.831
2017 111.5 0.846
2018 112.6 0.860
2019 113.6 0.874
2020 114.6 0.888
2021 115.6 0.901
2022 116.5 0.914
2023 117.5 0.926
2024 118.4 0.938
2025 119.2 0.950
2026 120.1 0.961
2027 120.9 0.971
2028 121.7 0.981
2029 122.5 0.990
2030 123.3 0.999


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



 
 


wds09285%2B0903b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic