14020-2108 WSI 79 (HD 122391)
14h 01m 59.80s -21° 08' 00.3" P.A. 12.00 sep 0.3 mag 9.30,12.10 Sp K0/1V dist. 50.13 pc (163.52 l.y.)
Coord 2000 |
14020-2108 |
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Discov num |
WSI 79 |
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Comp |
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Coord arcsec 2000 |
14 01 59.80 -21 08 00.3 |
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Date first |
2001 |
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Date last |
2021 |
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Obs |
15 |
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Pa first |
352 |
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Pa last |
11.6 |
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P.A. Now (θ) |
11.6° |
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Sep first |
0.3 |
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Sep last |
0.259 |
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Sep. Now (ρ) |
0.259" |
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Mag pri |
9.30 |
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Mag sec |
12.10 |
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delta mag (ΔM) |
2.8 |
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Spectral class |
K0/1V (yellow-orange) |
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Pri motion ra |
-203 |
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Sec motion ra |
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Pri motion dec |
-143 |
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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 122391 |
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Constellation |
Virgo |
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SAO |
182179 |
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HIP |
68552 |
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Tycho2 |
6149-00570-1 |
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Gaia DR2 |
6289569349715912704 |
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HD |
122391 |
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BD |
BD-20 3940 |
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Distance |
50.13 |
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Distance ly |
163.52 |
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ORBITAL ELEMENTS
Period (P) | 24.46y | |
Periastron (T) | 2015.22y | |
Semi-major axis (a) | 0.205a | |
Eccentricity (e) | 0.74 | |
Inclination (i) | 144.7° | |
Longitude of periastron (ω) | 325.1° | |
Node (Ω) | 137.9° | |
Notes | | |
Reference | Tok2018b | |
Equinox | 2000 | |
Last observation | 2018 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
357.1 |
0.312 |
2001 |
353.7 |
0.323 |
2002 |
350.6 |
0.332 |
2003 |
347.5 |
0.337 |
2004 |
344.5 |
0.338 |
2005 |
341.6 |
0.337 |
2006 |
338.5 |
0.331 |
2007 |
335.4 |
0.322 |
2008 |
332.0 |
0.309 |
2009 |
328.2 |
0.292 |
2010 |
323.9 |
0.269 |
2011 |
318.7 |
0.240 |
2012 |
311.8 |
0.204 |
2013 |
301.3 |
0.158 |
2014 |
280.3 |
0.100 |
2015 |
199.0 |
0.048 |
2016 |
96.9 |
0.076 |
2017 |
57.6 |
0.114 |
2018 |
38.3 |
0.153 |
2019 |
26.5 |
0.188 |
2020 |
18.3 |
0.219 |
2021 |
12.0 |
0.246 |
2022 |
6.9 |
0.270 |
2023 |
2.6 |
0.289 |
2024 |
358.7 |
0.306 |
2025 |
355.2 |
0.319 |
2026 |
352.0 |
0.328 |
2027 |
348.9 |
0.335 |
2028 |
345.9 |
0.338 |
2029 |
342.9 |
0.338 |
2030 |
339.9 |
0.334 |
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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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