12316+3201 COU 966
12h 31m 35.73s +32° 01' 22.5" P.A. 28.00 sep 0.3 mag 10.18,10.99 Sp F8 dist. 303.03 pc (988.48 l.y.)
Coord 2000 |
12316+3201 |
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Discov num |
COU 966 |
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Comp |
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Coord arcsec 2000 |
12 31 35.73 +32 01 22.5 |
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Date first |
1973 |
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Date last |
2014 |
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Obs |
18 |
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Pa first |
101 |
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Pa last |
27.7 |
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P.A. Now (θ) |
27.7° |
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Sep first |
0.2 |
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Sep last |
0.278 |
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Sep. Now (ρ) |
0.278" |
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Mag pri |
10.18 |
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Mag sec |
10.99 |
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delta mag (ΔM) |
0.81 |
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Spectral class |
F8 (yellow-white) |
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Pri motion ra |
+012 |
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Sec motion ra |
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Pri motion dec |
-003 |
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Sec motion dec |
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Notes |
N
C
(See Notes, Has orbit and linear solution) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
Constellation |
Canes Venatici |
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HIP |
61124 |
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Tycho2 |
2528-01773-1 |
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Gaia DR2 |
4012656213711769472 |
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BD |
BD+32 2254 |
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Distance |
303.03 |
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Distance ly |
988.48 |
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ORBITAL ELEMENTS
Period (P) | 90.43y | |
Periastron (T) | 2036.13y | |
Semi-major axis (a) | 0.126a | |
Eccentricity (e) | 0.304 | |
Inclination (i) | 172.4° | |
Longitude of periastron (ω) | 183° | |
Node (Ω) | 63.6° | |
Notes | | |
Reference | Mnt1999c | |
Equinox | | |
Last observation | 1997 | |
Grade | 5 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
40.1 |
0.160 |
2001 |
37.8 |
0.159 |
2002 |
35.4 |
0.157 |
2003 |
33.0 |
0.156 |
2004 |
30.5 |
0.155 |
2005 |
28.0 |
0.153 |
2006 |
25.4 |
0.151 |
2007 |
22.8 |
0.150 |
2008 |
20.1 |
0.148 |
2009 |
17.3 |
0.146 |
2010 |
14.5 |
0.144 |
2011 |
11.5 |
0.142 |
2012 |
8.5 |
0.140 |
2013 |
5.4 |
0.137 |
2014 |
2.2 |
0.135 |
2015 |
358.9 |
0.132 |
2016 |
355.4 |
0.130 |
2017 |
351.8 |
0.127 |
2018 |
348.0 |
0.125 |
2019 |
344.1 |
0.122 |
2020 |
340.0 |
0.119 |
2021 |
335.7 |
0.116 |
2022 |
331.2 |
0.114 |
2023 |
326.5 |
0.111 |
2024 |
321.5 |
0.108 |
2025 |
316.3 |
0.106 |
2026 |
310.8 |
0.103 |
2027 |
305.0 |
0.100 |
2028 |
299.0 |
0.098 |
2029 |
292.6 |
0.096 |
2030 |
286.0 |
0.094 |
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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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