09245+1808 A 2477 (HD 81163)
09h 24m 31.21s +18° 08' 29.1" P.A. 5.00 sep 0.5 mag 7.46,9.18 Sp K0IV dist. 170.36 pc (555.71 l.y.)
| Coord 2000 |
09245+1808 |
|
Discov num |
A 2477 |
|
Comp |
|
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Coord arcsec 2000 |
09 24 31.21 +18 08 29.1 |
|
| Date first |
1912 |
|
Date last |
2016 |
|
Obs |
72 |
|
| Pa first |
236 |
|
Pa last |
4.9 |
|
P.A. Now (θ) |
4.9° |
|
| Sep first |
0.3 |
|
Sep last |
0.456 |
|
Sep. Now (ρ) |
0.456" |
|
| Mag pri |
7.46 |
|
Mag sec |
9.18 |
|
delta mag (ΔM) |
1.72 |
|
Spectral class |
K0IV (yellow-orange) |
|
| Pri motion ra |
-032 |
|
Sec motion ra |
-032 |
|
| Pri motion dec |
-033 |
|
Sec motion dec |
-033 |
|
| Notes |
O
(Orbital solution) |
|
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 81163 |
|
Constellation |
Leo |
|
SAO |
98552 |
|
HIP |
46137 |
|
| Tycho2 |
1405-01091-1 |
|
Gaia DR2 |
632414044342607872 |
|
HD |
81163 |
|
GC |
12969 |
|
| ADS |
7341 |
|
BD |
BD+18 2182 |
|
Distance |
170.36 |
|
Distance ly |
555.71 |
|
ORBITAL ELEMENTS
| Period (P) | 250y | |
Periastron (T) | 2111.3y | |
Semi-major axis (a) | 0.392a | |
| Eccentricity (e) | 0.14 | |
Inclination (i) | 38° | |
Longitude of periastron (ω) | 313.3° | |
| Node (Ω) | 195.7° | |
Notes | | |
Reference | FMR2014a | |
| Equinox | 2000 | |
Last observation | 2013 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
349.8 |
0.421 |
| 2001 |
350.8 |
0.422 |
| 2002 |
351.8 |
0.423 |
| 2003 |
352.7 |
0.424 |
| 2004 |
353.7 |
0.425 |
| 2005 |
354.6 |
0.426 |
| 2006 |
355.6 |
0.427 |
| 2007 |
356.5 |
0.427 |
| 2008 |
357.5 |
0.428 |
| 2009 |
358.4 |
0.429 |
| 2010 |
359.4 |
0.429 |
| 2011 |
0.3 |
0.430 |
| 2012 |
1.2 |
0.430 |
| 2013 |
2.2 |
0.430 |
| 2014 |
3.1 |
0.431 |
| 2015 |
4.0 |
0.431 |
| 2016 |
5.0 |
0.431 |
| 2017 |
5.9 |
0.431 |
| 2018 |
6.8 |
0.431 |
| 2019 |
7.8 |
0.430 |
| 2020 |
8.7 |
0.430 |
| 2021 |
9.6 |
0.430 |
| 2022 |
10.6 |
0.429 |
| 2023 |
11.5 |
0.429 |
| 2024 |
12.4 |
0.428 |
| 2025 |
13.4 |
0.427 |
| 2026 |
14.3 |
0.427 |
| 2027 |
15.3 |
0.426 |
| 2028 |
16.2 |
0.425 |
| 2029 |
17.2 |
0.423 |
| 2030 |
18.2 |
0.422 |
| 2031 |
19.1 |
0.421 |
| 2032 |
20.1 |
0.420 |
| 2033 |
21.1 |
0.418 |
| 2034 |
22.1 |
0.417 |
| 2035 |
23.1 |
0.415 |
| 2036 |
24.1 |
0.413 |
| 2037 |
25.1 |
0.411 |
| 2038 |
26.1 |
0.409 |
| 2039 |
27.2 |
0.407 |
| 2040 |
28.2 |
0.405 |
| 2041 |
29.3 |
0.403 |
| 2042 |
30.3 |
0.401 |
| 2043 |
31.4 |
0.398 |
| 2044 |
32.5 |
0.396 |
| 2045 |
33.6 |
0.393 |
| 2046 |
34.7 |
0.391 |
| 2047 |
35.9 |
0.388 |
| 2048 |
37.0 |
0.385 |
| 2049 |
38.2 |
0.383 |
| 2050 |
39.4 |
0.380 |
|
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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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