04268+1240 WOR 15 (HD 286798)
04h 26m 42.75s +12° 41' 11.8" P.A. 348.00 sep 0.5 mag 11.19,11.49 Sp M0 dist. 34.38 pc (112.15 l.y.)
Coord 2000 |
04268+1240 |
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Discov num |
WOR 15 |
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Comp |
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Coord arcsec 2000 |
04 26 42.75 +12 41 11.8 |
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Date first |
1960 |
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Date last |
2018 |
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Obs |
24 |
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Pa first |
23 |
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Pa last |
347.7 |
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P.A. Now (θ) |
341.5° |
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Sep first |
0.3 |
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Sep last |
0.533 |
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Sep. Now (ρ) |
0.507" |
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Mag pri |
11.19 |
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Mag sec |
11.49 |
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delta mag (ΔM) |
0.3 |
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Spectral class |
M0 (red) |
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Pri motion ra |
+122 |
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Sec motion ra |
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Pri motion dec |
-021 |
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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 286798 |
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Constellation |
Taurus |
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HIP |
20745 |
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Tycho2 |
0676-00389-1 |
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Gaia DR2 |
3307241404808622208 |
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HD |
286798 |
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Distance |
34.38 |
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Distance ly |
112.15 |
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ORBITAL ELEMENTS
Period (P) | 40.9y | ± 3.3 |
Periastron (T) | 2037.1y | ± 3.3 |
Semi-major axis (a) | 0.314a | ± 0.047 |
Eccentricity (e) | 0.811 | ± 0.024 |
Inclination (i) | 144° | ± 14 |
Longitude of periastron (ω) | 319° | ± 16 |
Node (Ω) | 136° | ± 19 |
Notes | | |
Reference | Hor2021b | |
Equinox | | |
Last observation | | |
Grade | 3 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
38.3 |
0.216 |
2001 |
30.8 |
0.252 |
2002 |
25.1 |
0.286 |
2003 |
20.6 |
0.317 |
2004 |
16.8 |
0.345 |
2005 |
13.6 |
0.371 |
2006 |
10.8 |
0.394 |
2007 |
8.3 |
0.415 |
2008 |
6.0 |
0.435 |
2009 |
3.9 |
0.452 |
2010 |
2.0 |
0.467 |
2011 |
0.2 |
0.481 |
2012 |
358.4 |
0.493 |
2013 |
356.8 |
0.503 |
2014 |
355.2 |
0.511 |
2015 |
353.6 |
0.518 |
2016 |
352.1 |
0.522 |
2017 |
350.6 |
0.526 |
2018 |
349.1 |
0.527 |
2019 |
347.6 |
0.527 |
2020 |
346.1 |
0.524 |
2021 |
344.6 |
0.520 |
2022 |
343.1 |
0.515 |
2023 |
341.5 |
0.507 |
2024 |
339.9 |
0.497 |
2025 |
338.2 |
0.485 |
2026 |
336.4 |
0.470 |
2027 |
334.5 |
0.453 |
2028 |
332.4 |
0.433 |
2029 |
330.1 |
0.410 |
2030 |
327.5 |
0.384 |
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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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