13181-3829 B 808 (HD 115493)
13h 18m 05.40s -38° 28' 55.7" P.A. 316.00 sep 0.3 mag 10.09,10.47 Sp G0V dist. 276.24 pc (901.09 l.y.)
Coord 2000 |
13181-3829 |
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Discov num |
B 808 |
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Comp |
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Coord arcsec 2000 |
13 18 05.40 -38 28 55.7 |
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Date first |
1927 |
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Date last |
2021 |
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Obs |
11 |
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Pa first |
176 |
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Pa last |
315.7 |
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P.A. Now (θ) |
315.7° |
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Sep first |
0.2 |
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Sep last |
0.307 |
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Sep. Now (ρ) |
0.307" |
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Mag pri |
10.09 |
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Mag sec |
10.47 |
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delta mag (ΔM) |
0.38 |
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Spectral class |
G0V (yellow) |
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Pri motion ra |
-041 |
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Sec motion ra |
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Pri motion dec |
-037 |
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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
Name |
HD 115493 |
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Constellation |
Centaurus |
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HIP |
64893 |
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Tycho2 |
7774-01616-1 |
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HD |
115493 |
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CD |
CD-37 8507 |
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CP |
CP-37 5552 |
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Distance |
276.24 |
|
Distance ly |
901.09 |
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ORBITAL ELEMENTS
Period (P) | 350y | |
Periastron (T) | 1929.38y | |
Semi-major axis (a) | 0.313a | |
Eccentricity (e) | 0.322 | |
Inclination (i) | 31.3° | |
Longitude of periastron (ω) | 164.7° | |
Node (Ω) | 19.4° | |
Notes | | |
Reference | Tok2021f | |
Equinox | | |
Last observation | 2021 | |
Grade | 5 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
294.7 |
0.269 |
2001 |
295.8 |
0.271 |
2002 |
296.9 |
0.273 |
2003 |
298.0 |
0.274 |
2004 |
299.1 |
0.276 |
2005 |
300.1 |
0.278 |
2006 |
301.2 |
0.280 |
2007 |
302.2 |
0.281 |
2008 |
303.2 |
0.283 |
2009 |
304.2 |
0.285 |
2010 |
305.2 |
0.287 |
2011 |
306.2 |
0.289 |
2012 |
307.2 |
0.290 |
2013 |
308.1 |
0.292 |
2014 |
309.1 |
0.294 |
2015 |
310.0 |
0.296 |
2016 |
311.0 |
0.298 |
2017 |
311.9 |
0.300 |
2018 |
312.8 |
0.301 |
2019 |
313.7 |
0.303 |
2020 |
314.5 |
0.305 |
2021 |
315.4 |
0.307 |
2022 |
316.3 |
0.309 |
2023 |
317.1 |
0.311 |
2024 |
318.0 |
0.312 |
2025 |
318.8 |
0.314 |
2026 |
319.6 |
0.316 |
2027 |
320.4 |
0.318 |
2028 |
321.2 |
0.320 |
2029 |
322.0 |
0.322 |
2030 |
322.8 |
0.323 |
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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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