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 |
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Discov num |
COU 613 |
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Comp |
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Coord arcsec 2000 |
15 40 33.18 +31 28 19.8 |
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Date first |
1971 |
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Date last |
2014 |
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Obs |
20 |
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Pa first |
329 |
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Pa last |
25 |
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P.A. Now (θ) |
25° |
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Sep first |
0.3 |
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Sep last |
0.17 |
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Sep. Now (ρ) |
0.17" |
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Mag pri |
9.11 |
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Mag sec |
10.18 |
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delta mag (ΔM) |
1.07 |
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Spectral class |
G5 (yellow) |
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Pri motion ra |
-066 |
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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 |
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Constellation |
Corona Borealis |
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SAO |
64839 |
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HIP |
76777 |
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Tycho2 |
2571-01243-1 |
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Gaia DR2 |
1369473931766893056 |
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HD |
140065 |
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BD |
BD+31 2762 |
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Distance |
337.84 |
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Distance ly |
1102.03 |
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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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