13320+3108 WOR 24
13h 31m 58.34s +31° 08' 04.4" P.A. 49.00 sep 0.4 mag 11.14,11.37 Sp M0V dist. 32.01 pc (104.42 l.y.)
| Coord 2000 |
13320+3108 |
|
Discov num |
WOR 24 |
|
Comp |
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Coord arcsec 2000 |
13 31 58.34 +31 08 04.4 |
|
| Date first |
1960 |
|
Date last |
2014 |
|
Obs |
35 |
|
| Pa first |
353 |
|
Pa last |
48.9 |
|
P.A. Now (θ) |
355.3° |
|
| Sep first |
0.4 |
|
Sep last |
0.367 |
|
Sep. Now (ρ) |
0.328" |
|
| Mag pri |
11.14 |
|
Mag sec |
11.37 |
|
delta mag (ΔM) |
0.23 |
|
Spectral class |
M0V (red) |
|
| Pri motion ra |
-139 |
|
Sec motion ra |
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|
| Pri motion dec |
+040 |
|
Sec motion dec |
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| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Canes Venatici |
|
HIP |
66008 |
|
Tycho2 |
2536-01075-1 |
|
Gaia DR2 |
1468339715234682112 |
|
| GL |
Wo 9448A |
|
BD |
BD+31 2500 |
|
Distance |
32.01 |
|
Distance ly |
104.42 |
|
ORBITAL ELEMENTS
| Period (P) | 21.18y | ± 0.3 |
Periastron (T) | 1986.02y | ± 0.01 |
Semi-major axis (a) | 0.271a | ± 0.002 |
| Eccentricity (e) | 0.634 | ± 0.003 |
Inclination (i) | 153.4° | ± 4 |
Longitude of periastron (ω) | 257.5° | ± 2.5 |
| Node (Ω) | 103.9° | ± 3 |
Notes | n | |
Reference | Doc2000b | |
| Equinox | 2000 | |
Last observation | 1997 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
8.2 |
0.367 |
| 2001 |
1.5 |
0.347 |
| 2002 |
353.8 |
0.323 |
| 2003 |
344.7 |
0.292 |
| 2004 |
333.2 |
0.255 |
| 2005 |
317.2 |
0.210 |
| 2006 |
290.7 |
0.153 |
| 2007 |
228.7 |
0.094 |
| 2008 |
138.0 |
0.123 |
| 2009 |
102.0 |
0.193 |
| 2010 |
84.2 |
0.249 |
| 2011 |
72.4 |
0.292 |
| 2012 |
63.4 |
0.326 |
| 2013 |
55.9 |
0.352 |
| 2014 |
49.3 |
0.371 |
| 2015 |
43.3 |
0.385 |
| 2016 |
37.6 |
0.394 |
| 2017 |
32.1 |
0.398 |
| 2018 |
26.7 |
0.398 |
| 2019 |
21.2 |
0.393 |
| 2020 |
15.4 |
0.384 |
| 2021 |
9.4 |
0.370 |
| 2022 |
2.7 |
0.351 |
| 2023 |
355.3 |
0.328 |
| 2024 |
346.4 |
0.298 |
| 2025 |
335.5 |
0.263 |
| 2026 |
320.5 |
0.219 |
| 2027 |
296.8 |
0.165 |
| 2028 |
245.0 |
0.102 |
| 2029 |
149.3 |
0.111 |
| 2030 |
106.5 |
0.181 |
|
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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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