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 |
|
Discov num |
B 780 |
|
Comp |
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Coord arcsec 2000 |
09 40 42.60 -57 59 00.9 |
|
| Date first |
1927 |
|
Date last |
2019 |
|
Obs |
65 |
|
| Pa first |
238 |
|
Pa last |
277.7 |
|
P.A. Now (θ) |
239° |
|
| Sep first |
0.2 |
|
Sep last |
0.148 |
|
Sep. Now (ρ) |
0.138" |
|
| Mag pri |
5.85 |
|
Mag sec |
6.48 |
|
delta mag (ΔM) |
0.63 |
|
Spectral class |
A3IV (white) |
|
| Pri motion ra |
-032 |
|
Sec motion ra |
|
|
| 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 |
|
Constellation |
Carina |
|
SAO |
237221 |
|
HIP |
47479 |
|
| Tycho2 |
8593-01420-1 |
|
Gaia DR2 |
5305914640875063424 |
|
HD |
84121 |
|
HR |
3863 |
|
| GC |
13376 |
|
CP |
CP-57 2228 |
|
Distance |
72.57 |
|
Distance ly |
236.72 |
|
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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