14581-4852 WSI 80 (HD 131923)
14h 58m 08.79s -48° 51' 46.8" P.A. 257.00 sep 0.2 mag 6.40,10.70 Sp G4V dist. 23.85 pc (77.8 l.y.)
| Coord 2000 |
14581-4852 |
|
Discov num |
WSI 80 |
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Comp |
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Coord arcsec 2000 |
14 58 08.79 -48 51 46.8 |
|
| Date first |
2006 |
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Date last |
2021 |
|
Obs |
20 |
|
| Pa first |
147 |
|
Pa last |
257.1 |
|
P.A. Now (θ) |
228.1° |
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| Sep first |
0.2 |
|
Sep last |
0.172 |
|
Sep. Now (ρ) |
0.176" |
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| Mag pri |
6.40 |
|
Mag sec |
10.70 |
|
delta mag (ΔM) |
4.3 |
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Spectral class |
G4V (yellow) |
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| Pri motion ra |
-015 |
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Sec motion ra |
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| Pri motion dec |
-337 |
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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
| Name |
HD 131923 |
|
Constellation |
Lupus |
|
SAO |
225328 |
|
HIP |
73241 |
|
| Tycho2 |
8288-00880-1 |
|
HD |
131923 |
|
HR |
5566 |
|
GC |
20118 |
|
| GL |
Gl 570.1 |
|
CD |
CD-48 9494 |
|
CP |
CP-48 6957 |
|
FK5 |
3178 |
|
| Distance |
23.85 |
|
Distance ly |
77.8 |
|
ORBITAL ELEMENTS
| Period (P) | 22.39y | ± 2.08 |
Periastron (T) | 2020.52y | ± 0.19 |
Semi-major axis (a) | 0.4015a | ± 0.0108 |
| Eccentricity (e) | 0.791 | ± 0.061 |
Inclination (i) | 108.4° | ± 0.5 |
Longitude of periastron (ω) | 109.2° | ± 1.1 |
| Node (Ω) | 86.6° | ± 3.6 |
Notes | n | |
Reference | Tok2020e | |
| Equinox | | |
Last observation | | |
Grade | 3 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
237.9 |
0.177 |
| 2001 |
221.8 |
0.175 |
| 2002 |
205.2 |
0.173 |
| 2003 |
188.8 |
0.178 |
| 2004 |
173.9 |
0.191 |
| 2005 |
161.3 |
0.210 |
| 2006 |
151.1 |
0.234 |
| 2007 |
142.8 |
0.259 |
| 2008 |
136.1 |
0.286 |
| 2009 |
130.4 |
0.311 |
| 2010 |
125.6 |
0.335 |
| 2011 |
121.4 |
0.356 |
| 2012 |
117.7 |
0.374 |
| 2013 |
114.3 |
0.388 |
| 2014 |
111.0 |
0.396 |
| 2015 |
107.8 |
0.397 |
| 2016 |
104.6 |
0.389 |
| 2017 |
101.1 |
0.369 |
| 2018 |
97.1 |
0.331 |
| 2019 |
91.5 |
0.263 |
| 2020 |
77.4 |
0.122 |
| 2021 |
264.2 |
0.129 |
| 2022 |
244.2 |
0.175 |
| 2023 |
228.1 |
0.176 |
| 2024 |
211.7 |
0.173 |
| 2025 |
195.1 |
0.175 |
| 2026 |
179.4 |
0.185 |
| 2027 |
165.9 |
0.202 |
| 2028 |
154.8 |
0.224 |
| 2029 |
145.8 |
0.249 |
| 2030 |
138.5 |
0.275 |
|
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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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