03496-0220 YR 23 (HD 24031)
03h 49m 38.68s -02° 19' 42.5" P.A. 283.00 sep 0.4 mag 7.73,8.29 Sp G0 dist. 50.94 pc (166.17 l.y.)
Coord 2000 |
03496-0220 |
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Discov num |
YR 23 |
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Comp |
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Coord arcsec 2000 |
03 49 38.68 -02 19 42.5 |
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Date first |
2000 |
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Date last |
2021 |
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Obs |
40 |
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Pa first |
10 |
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Pa last |
282.5 |
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P.A. Now (θ) |
282.5° |
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Sep first |
0.3 |
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Sep last |
0.393 |
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Sep. Now (ρ) |
0.393" |
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Mag pri |
7.73 |
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Mag sec |
8.29 |
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delta mag (ΔM) |
0.56 |
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Spectral class |
G0 (yellow) |
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Pri motion ra |
-062 |
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Sec motion ra |
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Pri motion dec |
-041 |
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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 24031 |
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Constellation |
Eridanus |
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SAO |
130752 |
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HIP |
17895 |
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Tycho2 |
4717-00812-1 |
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Gaia DR2 |
3250243512297702016 |
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HD |
24031 |
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BD |
BD-02 726 |
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Distance |
50.94 |
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Distance ly |
166.17 |
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ORBITAL ELEMENTS
Period (P) | 51.1y | |
Periastron (T) | 1988.3y | |
Semi-major axis (a) | 0.383a | |
Eccentricity (e) | 0.6 | |
Inclination (i) | 121.1° | |
Longitude of periastron (ω) | 286.5° | |
Node (Ω) | 68.6° | |
Notes | n | |
Reference | Tok2018a | |
Equinox | 2000 | |
Last observation | 2014 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
13.1 |
0.281 |
2001 |
7.7 |
0.282 |
2002 |
2.4 |
0.283 |
2003 |
357.1 |
0.285 |
2004 |
351.9 |
0.287 |
2005 |
346.7 |
0.291 |
2006 |
341.8 |
0.295 |
2007 |
336.9 |
0.300 |
2008 |
332.3 |
0.306 |
2009 |
327.8 |
0.312 |
2010 |
323.5 |
0.319 |
2011 |
319.4 |
0.327 |
2012 |
315.5 |
0.335 |
2013 |
311.8 |
0.343 |
2014 |
308.2 |
0.351 |
2015 |
304.9 |
0.359 |
2016 |
301.6 |
0.367 |
2017 |
298.5 |
0.375 |
2018 |
295.6 |
0.383 |
2019 |
292.7 |
0.390 |
2020 |
289.9 |
0.396 |
2021 |
287.2 |
0.401 |
2022 |
284.6 |
0.406 |
2023 |
282.0 |
0.410 |
2024 |
279.5 |
0.412 |
2025 |
277.0 |
0.413 |
2026 |
274.5 |
0.412 |
2027 |
272.0 |
0.409 |
2028 |
269.4 |
0.405 |
2029 |
266.7 |
0.398 |
2030 |
264.0 |
0.387 |
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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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