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° | |
Notes | n | |
Reference | Doc2013e | |
| Equinox | 2000 | |
Last observation | 2006 | |
Grade | 2 | (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 |
| 2031 |
246.6 |
0.067 |
| 2032 |
189.8 |
0.052 |
| 2033 |
125.6 |
0.066 |
| 2034 |
95.9 |
0.099 |
| 2035 |
81.2 |
0.131 |
| 2036 |
71.9 |
0.157 |
| 2037 |
65.1 |
0.178 |
| 2038 |
59.5 |
0.194 |
| 2039 |
54.7 |
0.206 |
| 2040 |
50.4 |
0.215 |
| 2041 |
46.3 |
0.220 |
| 2042 |
42.4 |
0.223 |
| 2043 |
38.5 |
0.223 |
| 2044 |
34.6 |
0.220 |
| 2045 |
30.5 |
0.215 |
| 2046 |
26.2 |
0.207 |
| 2047 |
21.5 |
0.198 |
| 2048 |
16.3 |
0.187 |
| 2049 |
10.4 |
0.173 |
| 2050 |
3.3 |
0.158 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
|
|
|
|
|
|
|
|
Measures: green=micrometric, blue=interferometric, purple=photographic |
|
