09457-3902 HDS 1409
09h 45m 40.09s -39° 02' 26.4" P.A. 41.00 sep 0.6 mag 12.64,13.18 dist. 20.21 pc (65.93 l.y.)
| Coord 2000 |
09457-3902 |
|
Discov num |
HDS1409 |
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Comp |
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Coord arcsec 2000 |
09 45 40.09 -39 02 26.4 |
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| Date first |
1991 |
|
Date last |
2021 |
|
Obs |
7 |
|
| Pa first |
29 |
|
Pa last |
40.5 |
|
P.A. Now (θ) |
40.5° |
|
| Sep first |
0.5 |
|
Sep last |
0.592 |
|
Sep. Now (ρ) |
0.592" |
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| Mag pri |
12.64 |
|
Mag sec |
13.18 |
|
delta mag (ΔM) |
0.54 |
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Spectral class |
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| Pri motion ra |
-126 |
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Sec motion ra |
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| Pri motion dec |
-236 |
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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
| Constellation |
Antlia |
|
HIP |
47890 |
|
Distance |
20.21 |
|
Distance ly |
65.93 |
|
ORBITAL ELEMENTS
| Period (P) | 33.98y | |
Periastron (T) | 1997.383y | |
Semi-major axis (a) | 0.497a | |
| Eccentricity (e) | 0.479 | |
Inclination (i) | 112.4° | |
Longitude of periastron (ω) | 121° | |
| Node (Ω) | 29.1° | |
Notes | n | |
Reference | Tok2018e | |
| Equinox | 2000 | |
Last observation | 2018 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
203.3 |
0.328 |
| 2001 |
195.5 |
0.337 |
| 2002 |
187.5 |
0.326 |
| 2003 |
178.8 |
0.306 |
| 2004 |
168.7 |
0.283 |
| 2005 |
156.9 |
0.262 |
| 2006 |
143.3 |
0.248 |
| 2007 |
128.7 |
0.244 |
| 2008 |
114.3 |
0.252 |
| 2009 |
101.3 |
0.270 |
| 2010 |
90.4 |
0.297 |
| 2011 |
81.5 |
0.330 |
| 2012 |
74.2 |
0.365 |
| 2013 |
68.2 |
0.400 |
| 2014 |
63.2 |
0.436 |
| 2015 |
58.9 |
0.469 |
| 2016 |
55.1 |
0.500 |
| 2017 |
51.8 |
0.527 |
| 2018 |
48.8 |
0.550 |
| 2019 |
46.0 |
0.568 |
| 2020 |
43.4 |
0.580 |
| 2021 |
40.8 |
0.585 |
| 2022 |
38.2 |
0.583 |
| 2023 |
35.6 |
0.572 |
| 2024 |
32.8 |
0.550 |
| 2025 |
29.8 |
0.517 |
| 2026 |
26.2 |
0.469 |
| 2027 |
21.6 |
0.405 |
| 2028 |
14.9 |
0.323 |
| 2029 |
2.8 |
0.222 |
| 2030 |
329.9 |
0.123 |
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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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