09191-4128 CHR 239 (HD 80542)
09h 19m 04.43s -41° 28' 05.6" P.A. 211.00 sep 0.1 mag 7.50,8.80 Sp G2V dist. 48.12 pc (156.97 l.y.)
Coord 2000 |
09191-4128 |
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Discov num |
CHR 239 |
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Comp |
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Coord arcsec 2000 |
09 19 04.43 -41 28 05.6 |
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Date first |
1996 |
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Date last |
2021 |
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Obs |
19 |
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Pa first |
273 |
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Pa last |
210.8 |
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P.A. Now (θ) |
160.2° |
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Sep first |
0.1 |
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Sep last |
0.131 |
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Sep. Now (ρ) |
0.102" |
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Mag pri |
7.50 |
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Mag sec |
8.80 |
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delta mag (ΔM) |
1.3 |
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Spectral class |
G2V (yellow) |
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Pri motion ra |
-052 |
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Sec motion ra |
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Pri motion dec |
-014 |
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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 80542 |
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Constellation |
Vela |
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SAO |
221055 |
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HIP |
45705 |
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Tycho2 |
7686-00237-1 |
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Gaia DR2 |
5427666174738393344 |
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HD |
80542 |
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CD |
CD-40 5108 |
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CP |
CP-40 3394 |
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Distance |
48.12 |
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Distance ly |
156.97 |
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ORBITAL ELEMENTS
Period (P) | 10.86y | ± 0.02 |
Periastron (T) | 2013.51y | ± 0.02 |
Semi-major axis (a) | 0.122a | ± 0.001 |
Eccentricity (e) | 0.394 | ± 0.006 |
Inclination (i) | 147° | ± 1.3 |
Longitude of periastron (ω) | 260.1° | ± 1.9 |
Node (Ω) | 332.6° | ± 2.3 |
Notes | n | |
Reference | Tok2014a | |
Equinox | 2000 | |
Last observation | 2013 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
197.2 |
0.125 |
2001 |
169.8 |
0.109 |
2002 |
126.8 |
0.079 |
2003 |
40.9 |
0.066 |
2004 |
342.4 |
0.101 |
2005 |
313.6 |
0.128 |
2006 |
292.7 |
0.140 |
2007 |
274.1 |
0.145 |
2008 |
255.8 |
0.144 |
2009 |
237.0 |
0.140 |
2010 |
216.7 |
0.134 |
2011 |
193.8 |
0.124 |
2012 |
165.2 |
0.106 |
2013 |
117.7 |
0.074 |
2014 |
29.1 |
0.069 |
2015 |
337.4 |
0.106 |
2016 |
310.4 |
0.130 |
2017 |
290.0 |
0.141 |
2018 |
271.5 |
0.145 |
2019 |
253.2 |
0.143 |
2020 |
234.2 |
0.139 |
2021 |
213.7 |
0.132 |
2022 |
190.3 |
0.122 |
2023 |
160.2 |
0.102 |
2024 |
107.4 |
0.070 |
2025 |
18.8 |
0.074 |
2026 |
332.8 |
0.110 |
2027 |
307.3 |
0.132 |
2028 |
287.3 |
0.142 |
2029 |
269.0 |
0.145 |
2030 |
250.6 |
0.143 |
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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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