12533+4246 COU 1579
12h 53m 17.33s +42° 46' 16.8" P.A. 141.00 sep 0.3 mag 9.40,9.70 Sp G9V
| Coord 2000 |
12533+4246 |
|
Discov num |
COU1579 |
|
Comp |
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Coord arcsec 2000 |
12 53 17.33 +42 46 16.8 |
|
| Date first |
1977 |
|
Date last |
2014 |
|
Obs |
24 |
|
| Pa first |
13 |
|
Pa last |
141.3 |
|
P.A. Now (θ) |
141.3° |
|
| Sep first |
0.3 |
|
Sep last |
0.252 |
|
Sep. Now (ρ) |
0.252" |
|
| Mag pri |
9.40 |
|
Mag sec |
9.70 |
|
delta mag (ΔM) |
0.3 |
|
Spectral class |
G9V (yellow) |
|
| Pri motion ra |
+010 |
|
Sec motion ra |
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|
| Pri motion dec |
-029 |
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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
| Constellation |
Canes Venatici |
|
Tycho2 |
3023-00675-1 |
|
ORBITAL ELEMENTS
| Period (P) | 90.81y | |
Periastron (T) | 2023.25y | |
Semi-major axis (a) | 0.409a | |
| Eccentricity (e) | 0.646 | |
Inclination (i) | 72.2° | |
Longitude of periastron (ω) | 66.3° | |
| Node (Ω) | 158° | |
Notes | | |
Reference | Doc2013a | |
| Equinox | 2000 | |
Last observation | 2008 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
82.4 |
0.174 |
| 2001 |
87.5 |
0.175 |
| 2002 |
92.5 |
0.176 |
| 2003 |
97.4 |
0.179 |
| 2004 |
102.2 |
0.182 |
| 2005 |
106.7 |
0.186 |
| 2006 |
111.1 |
0.191 |
| 2007 |
115.2 |
0.196 |
| 2008 |
119.2 |
0.201 |
| 2009 |
122.9 |
0.207 |
| 2010 |
126.4 |
0.213 |
| 2011 |
129.7 |
0.218 |
| 2012 |
132.9 |
0.222 |
| 2013 |
136.0 |
0.226 |
| 2014 |
139.0 |
0.229 |
| 2015 |
141.9 |
0.230 |
| 2016 |
144.8 |
0.230 |
| 2017 |
147.8 |
0.226 |
| 2018 |
150.9 |
0.219 |
| 2019 |
154.3 |
0.206 |
| 2020 |
158.3 |
0.188 |
| 2021 |
163.4 |
0.161 |
| 2022 |
171.0 |
0.125 |
| 2023 |
186.2 |
0.082 |
| 2024 |
229.6 |
0.047 |
| 2025 |
291.0 |
0.064 |
| 2026 |
313.6 |
0.109 |
| 2027 |
322.8 |
0.154 |
| 2028 |
327.9 |
0.195 |
| 2029 |
331.3 |
0.231 |
| 2030 |
333.9 |
0.263 |
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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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