12392-4022 B 1215 (HD 109961)
12h 39m 10.45s -40° 22' 07.3" P.A. 11.00 sep 0.3 mag 9.15,9.84 Sp G3V dist. 87.57 pc (285.65 l.y.)
Coord 2000 |
12392-4022 |
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Discov num |
B 1215 |
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Comp |
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Coord arcsec 2000 |
12 39 10.45 -40 22 07.3 |
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Date first |
1929 |
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Date last |
2018 |
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Obs |
25 |
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Pa first |
68 |
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Pa last |
10.7 |
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P.A. Now (θ) |
10.7° |
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Sep first |
0.2 |
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Sep last |
0.278 |
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Sep. Now (ρ) |
0.278" |
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Mag pri |
9.15 |
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Mag sec |
9.84 |
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delta mag (ΔM) |
0.69 |
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Spectral class |
G3V (yellow) |
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Pri motion ra |
-088 |
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Sec motion ra |
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Pri motion dec |
-007 |
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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 109961 |
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Constellation |
Centaurus |
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SAO |
223574 |
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HIP |
61729 |
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Tycho2 |
7762-00220-1 |
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HD |
109961 |
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CD |
CD-39 7742 |
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CP |
CP-39 5648 |
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Distance |
87.57 |
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Distance ly |
285.65 |
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ORBITAL ELEMENTS
Period (P) | 59.82y | ± 0.24 |
Periastron (T) | 1995.378y | ± 0.54 |
Semi-major axis (a) | 0.242a | ± 0.03 |
Eccentricity (e) | 0.636 | ± 0.037 |
Inclination (i) | 50.6° | ± 6.5 |
Longitude of periastron (ω) | 133.8° | ± 11.3 |
Node (Ω) | 57.2° | ± 10.4 |
Notes | n | |
Reference | FMR2013b | |
Equinox | 2000 | |
Last observation | 2011 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
278.6 |
0.127 |
2001 |
288.9 |
0.132 |
2002 |
298.3 |
0.138 |
2003 |
306.9 |
0.145 |
2004 |
314.7 |
0.153 |
2005 |
321.7 |
0.161 |
2006 |
328.0 |
0.170 |
2007 |
333.6 |
0.180 |
2008 |
338.7 |
0.190 |
2009 |
343.3 |
0.200 |
2010 |
347.4 |
0.210 |
2011 |
351.1 |
0.220 |
2012 |
354.6 |
0.229 |
2013 |
357.7 |
0.239 |
2014 |
0.6 |
0.249 |
2015 |
3.3 |
0.258 |
2016 |
5.8 |
0.267 |
2017 |
8.2 |
0.275 |
2018 |
10.4 |
0.283 |
2019 |
12.5 |
0.291 |
2020 |
14.5 |
0.298 |
2021 |
16.4 |
0.305 |
2022 |
18.2 |
0.311 |
2023 |
19.9 |
0.317 |
2024 |
21.6 |
0.323 |
2025 |
23.2 |
0.327 |
2026 |
24.8 |
0.332 |
2027 |
26.4 |
0.335 |
2028 |
27.9 |
0.338 |
2029 |
29.4 |
0.340 |
2030 |
30.9 |
0.342 |
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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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