12290+0826 WSI 113
12h 28m 57.59s +08° 25' 31.9" P.A. 16.00 sep 0.2 mag 12.20,13.80 Sp M3.5V+M5V dist. 13.18 pc (42.99 l.y.)
| Coord 2000 |
12290+0826 |
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Discov num |
WSI 113 |
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Comp |
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Coord arcsec 2000 |
12 28 57.59 +08 25 31.9 |
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| Date first |
1995 |
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Date last |
2021 |
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Obs |
36 |
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| Pa first |
180 |
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Pa last |
15.8 |
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P.A. Now (θ) |
355.5° |
|
| Sep first |
0.2 |
|
Sep last |
0.245 |
|
Sep. Now (ρ) |
0.283" |
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| Mag pri |
12.20 |
|
Mag sec |
13.80 |
|
delta mag (ΔM) |
1.6 |
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Spectral class |
M3.5V+M5V (red/red) |
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| Pri motion ra |
-634 |
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Sec motion ra |
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| Pri motion dec |
-258 |
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Sec motion dec |
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| Notes |
N
O
(See Notes, Orbital solution) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Virgo |
|
HIP |
60910 |
|
GL |
Gl 469 |
|
Distance |
13.18 |
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| Distance ly |
42.99 |
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ORBITAL ELEMENTS
| Period (P) | 11.5515y | ± 0.0055 |
Periastron (T) | 58765.8d (2019.771y) | ± 3.4 |
Semi-major axis (a) | 312.71m | ± 0.65 |
| Eccentricity (e) | 0.2995 | ± 0.0032 |
Inclination (i) | 108.194° | ± 0.065 |
Longitude of periastron (ω) | 268.58° | ± 0.13 |
| Node (Ω) | 9.81° | ± 0.13 |
Notes | n | |
Reference | MnA2019 | |
| Equinox | | |
Last observation | | |
Grade | 2 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
354.3 |
0.277 |
| 2001 |
338.9 |
0.210 |
| 2002 |
307.4 |
0.141 |
| 2003 |
254.5 |
0.138 |
| 2004 |
221.4 |
0.205 |
| 2005 |
205.5 |
0.273 |
| 2006 |
194.7 |
0.297 |
| 2007 |
182.6 |
0.238 |
| 2008 |
139.8 |
0.087 |
| 2009 |
27.9 |
0.171 |
| 2010 |
10.5 |
0.283 |
| 2011 |
0.3 |
0.298 |
| 2012 |
348.4 |
0.250 |
| 2013 |
327.9 |
0.176 |
| 2014 |
284.1 |
0.127 |
| 2015 |
236.3 |
0.164 |
| 2016 |
213.1 |
0.239 |
| 2017 |
200.4 |
0.291 |
| 2018 |
189.9 |
0.283 |
| 2019 |
173.0 |
0.176 |
| 2020 |
64.7 |
0.082 |
| 2021 |
17.9 |
0.234 |
| 2022 |
5.8 |
0.300 |
| 2023 |
355.5 |
0.283 |
| 2024 |
341.0 |
0.218 |
| 2025 |
311.9 |
0.146 |
| 2026 |
259.5 |
0.134 |
| 2027 |
223.7 |
0.198 |
| 2028 |
206.8 |
0.267 |
| 2029 |
195.7 |
0.298 |
| 2030 |
184.2 |
0.249 |
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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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