15406+3128 COU 613 (HD 140065)
15h 40m 33.18s +31° 28' 19.8" P.A. 25.00 sep 0.2 mag 9.11,10.18 Sp G5 dist. 337.84 pc (1102.03 l.y.)
| Coord 2000 |
15406+3128 |
|
Discov num |
COU 613 |
|
Comp |
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Coord arcsec 2000 |
15 40 33.18 +31 28 19.8 |
|
| Date first |
1971 |
|
Date last |
2014 |
|
Obs |
20 |
|
| Pa first |
329 |
|
Pa last |
25 |
|
P.A. Now (θ) |
25° |
|
| Sep first |
0.3 |
|
Sep last |
0.17 |
|
Sep. Now (ρ) |
0.17" |
|
| Mag pri |
9.11 |
|
Mag sec |
10.18 |
|
delta mag (ΔM) |
1.07 |
|
Spectral class |
G5 (yellow) |
|
| Pri motion ra |
-066 |
|
Sec motion ra |
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| Pri motion dec |
+050 |
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Sec motion dec |
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| Notes |
O
(Orbital solution) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 140065 |
|
Constellation |
Corona Borealis |
|
SAO |
64839 |
|
HIP |
76777 |
|
| Tycho2 |
2571-01243-1 |
|
Gaia DR2 |
1369473931766893056 |
|
HD |
140065 |
|
BD |
BD+31 2762 |
|
| Distance |
337.84 |
|
Distance ly |
1102.03 |
|
ORBITAL ELEMENTS
| Period (P) | 452y | ± 99.6 |
Periastron (T) | 1960y | ± 3.2 |
Semi-major axis (a) | 0.49a | ± 0.065 |
| Eccentricity (e) | 0.503 | ± 0.044 |
Inclination (i) | 73.1° | ± 0.5 |
Longitude of periastron (ω) | 147.9° | ± 7.9 |
| Node (Ω) | 152.5° | ± 0.9 |
Notes | | |
Reference | BAE2021 | |
| Equinox | | |
Last observation | | |
Grade | 5 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
353.6 |
0.226 |
| 2001 |
354.5 |
0.223 |
| 2002 |
355.5 |
0.220 |
| 2003 |
356.5 |
0.217 |
| 2004 |
357.6 |
0.214 |
| 2005 |
358.6 |
0.211 |
| 2006 |
359.7 |
0.207 |
| 2007 |
0.9 |
0.204 |
| 2008 |
2.0 |
0.201 |
| 2009 |
3.3 |
0.197 |
| 2010 |
4.5 |
0.194 |
| 2011 |
5.8 |
0.191 |
| 2012 |
7.1 |
0.188 |
| 2013 |
8.5 |
0.185 |
| 2014 |
10.0 |
0.181 |
| 2015 |
11.4 |
0.178 |
| 2016 |
13.0 |
0.175 |
| 2017 |
14.6 |
0.173 |
| 2018 |
16.2 |
0.170 |
| 2019 |
17.9 |
0.167 |
| 2020 |
19.7 |
0.164 |
| 2021 |
21.5 |
0.162 |
| 2022 |
23.3 |
0.159 |
| 2023 |
25.3 |
0.157 |
| 2024 |
27.2 |
0.155 |
| 2025 |
29.3 |
0.153 |
| 2026 |
31.3 |
0.151 |
| 2027 |
33.5 |
0.149 |
| 2028 |
35.6 |
0.148 |
| 2029 |
37.9 |
0.147 |
| 2030 |
40.1 |
0.146 |
|
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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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