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 |
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Discov num |
STF1356 |
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Comp |
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Coord arcsec 2000 |
09 28 27.41 +09 03 24.4 |
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Date first |
1825 |
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Date last |
2021 |
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Obs |
691 |
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Pa first |
154 |
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Pa last |
116.3 |
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P.A. Now (θ) |
117.5° |
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Sep first |
1.0 |
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Sep last |
0.92 |
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Sep. Now (ρ) |
0.926" |
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Mag pri |
5.69 |
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Mag sec |
7.28 |
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delta mag (ΔM) |
1.59 |
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Spectral class |
F9IV (yellow-white) |
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Pri motion ra |
+050 |
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Sec motion ra |
+050 |
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Pri motion dec |
-005 |
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Sec motion dec |
-005 |
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Notes |
N
O
(See Notes, Orbital solution) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
Name |
Ome Leo |
|
Constellation |
Leo |
|
SAO |
117717 |
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HIP |
46454 |
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Tycho2 |
0820-01635-1 |
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HD |
81858 |
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HR |
3754 |
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GC |
13062 |
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ADS |
7390 |
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BD |
BD+09 2188 |
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Bayer |
Omega Leonis |
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Bayer name |
Ome Leo |
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Flamsteed |
2 Leonis |
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Flamsteed name |
2 Leo |
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Distance |
33.17 |
|
Distance ly |
108.2 |
|
Bayer greek |
ω Leo |
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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 |
Notes | n | |
Reference | Mut2010b | |
Equinox | 2000 | |
Last observation | 2008 | |
Grade | 2 | (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 |
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Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
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Measures: green=micrometric, blue=interferometric, purple=photographic |
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