09407-5759 B 780 (HD 84121)
09h 40m 42.60s -57° 59' 00.9" P.A. 278.00 sep 0.1 mag 5.85,6.48 Sp A3IV dist. 72.57 pc (236.72 l.y.)
Coord 2000 |
09407-5759 |
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Discov num |
B 780 |
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Comp |
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Coord arcsec 2000 |
09 40 42.60 -57 59 00.9 |
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Date first |
1927 |
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Date last |
2019 |
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Obs |
65 |
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Pa first |
238 |
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Pa last |
277.7 |
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P.A. Now (θ) |
239° |
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Sep first |
0.2 |
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Sep last |
0.148 |
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Sep. Now (ρ) |
0.138" |
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Mag pri |
5.85 |
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Mag sec |
6.48 |
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delta mag (ΔM) |
0.63 |
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Spectral class |
A3IV (white) |
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Pri motion ra |
-032 |
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Sec motion ra |
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Pri motion dec |
+003 |
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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 84121 |
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Constellation |
Carina |
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SAO |
237221 |
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HIP |
47479 |
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Tycho2 |
8593-01420-1 |
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Gaia DR2 |
5305914640875063424 |
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HD |
84121 |
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HR |
3863 |
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GC |
13376 |
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CP |
CP-57 2228 |
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Distance |
72.57 |
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Distance ly |
236.72 |
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ORBITAL ELEMENTS
Period (P) | 10.63y | ± 0.01 |
Periastron (T) | 2005.86y | ± 0.02 |
Semi-major axis (a) | 0.123a | ± 0 |
Eccentricity (e) | 0.338 | ± 0.002 |
Inclination (i) | 128.6° | ± 0.3 |
Longitude of periastron (ω) | 17.6° | ± 0.8 |
Node (Ω) | 86.1° | ± 0.3 |
Notes | n | |
Reference | Tok2015c | |
Equinox | 2000 | |
Last observation | 2014 | |
Grade | 1 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
261.2 |
0.162 |
2001 |
249.4 |
0.154 |
2002 |
234.6 |
0.131 |
2003 |
211.2 |
0.098 |
2004 |
167.5 |
0.074 |
2005 |
113.6 |
0.080 |
2006 |
67.9 |
0.076 |
2007 |
356.4 |
0.062 |
2008 |
303.6 |
0.099 |
2009 |
282.0 |
0.138 |
2010 |
268.5 |
0.159 |
2011 |
256.9 |
0.161 |
2012 |
244.5 |
0.147 |
2013 |
227.5 |
0.119 |
2014 |
198.0 |
0.086 |
2015 |
146.5 |
0.073 |
2016 |
96.9 |
0.083 |
2017 |
46.0 |
0.067 |
2018 |
330.6 |
0.072 |
2019 |
293.9 |
0.115 |
2020 |
276.5 |
0.148 |
2021 |
264.2 |
0.162 |
2022 |
252.6 |
0.158 |
2023 |
239.0 |
0.138 |
2024 |
218.7 |
0.107 |
2025 |
181.3 |
0.077 |
2026 |
126.4 |
0.076 |
2027 |
80.5 |
0.081 |
2028 |
17.7 |
0.060 |
2029 |
312.7 |
0.087 |
2030 |
286.4 |
0.129 |
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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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