04515-3454 FIN 320 (HD 31093)
04h 51m 28.20s -34° 54' 22.4" P.A. 75.00 sep 0.2 mag 6.31,7.05 Sp A1Vn dist. 82.17 pc (268.04 l.y.)
Coord 2000 |
04515-3454 |
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Discov num |
FIN 320 |
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Comp |
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Coord arcsec 2000 |
04 51 28.20 -34 54 22.4 |
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Date first |
1952 |
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Date last |
2021 |
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Obs |
36 |
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Pa first |
45 |
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Pa last |
75.2 |
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P.A. Now (θ) |
72.5° |
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Sep first |
0.3 |
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Sep last |
0.166 |
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Sep. Now (ρ) |
0.175" |
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Mag pri |
6.31 |
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Mag sec |
7.05 |
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delta mag (ΔM) |
0.74 |
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Spectral class |
A1Vn (white) |
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Pri motion ra |
+024 |
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Sec motion ra |
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Pri motion dec |
-025 |
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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 31093 |
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Constellation |
Caelum |
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SAO |
195357 |
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HIP |
22573 |
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Tycho2 |
7049-01577-1 |
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Gaia DR2 |
4872980219421333632 |
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HD |
31093 |
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HR |
1559 |
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GC |
5939 |
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CD |
CD-35 1962 |
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CP |
CP-35 551 |
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FK5 |
2364 |
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Distance |
82.17 |
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Distance ly |
268.04 |
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ORBITAL ELEMENTS
Period (P) | 42.92y | ± 0.39 |
Periastron (T) | 2006.48y | ± 0.13 |
Semi-major axis (a) | 0.227a | ± 0.001 |
Eccentricity (e) | 0.826 | ± 0.004 |
Inclination (i) | 111.6° | ± 0.3 |
Longitude of periastron (ω) | 292.1° | ± 0.2 |
Node (Ω) | 198.4° | ± 0.6 |
Notes | n | |
Reference | Tok2015c | |
Equinox | 2000 | |
Last observation | 2014 | |
Grade | 2 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
35.1 |
0.212 |
2001 |
33.0 |
0.200 |
2002 |
30.6 |
0.185 |
2003 |
27.7 |
0.165 |
2004 |
23.8 |
0.138 |
2005 |
17.4 |
0.099 |
2006 |
354.5 |
0.036 |
2007 |
199.4 |
0.054 |
2008 |
179.8 |
0.079 |
2009 |
166.8 |
0.086 |
2010 |
155.4 |
0.090 |
2011 |
144.6 |
0.093 |
2012 |
134.6 |
0.096 |
2013 |
125.3 |
0.101 |
2014 |
116.9 |
0.106 |
2015 |
109.4 |
0.112 |
2016 |
102.6 |
0.119 |
2017 |
96.7 |
0.127 |
2018 |
91.5 |
0.135 |
2019 |
86.8 |
0.143 |
2020 |
82.6 |
0.151 |
2021 |
78.9 |
0.159 |
2022 |
75.5 |
0.168 |
2023 |
72.5 |
0.175 |
2024 |
69.7 |
0.183 |
2025 |
67.1 |
0.191 |
2026 |
64.8 |
0.198 |
2027 |
62.6 |
0.205 |
2028 |
60.5 |
0.211 |
2029 |
58.5 |
0.217 |
2030 |
56.6 |
0.222 |
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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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