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 |
|
Discov num |
FIN 320 |
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Comp |
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Coord arcsec 2000 |
04 51 28.20 -34 54 22.4 |
|
| Date first |
1952 |
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Date last |
2021 |
|
Obs |
36 |
|
| Pa first |
45 |
|
Pa last |
75.2 |
|
P.A. Now (θ) |
72.5° |
|
| Sep first |
0.3 |
|
Sep last |
0.166 |
|
Sep. Now (ρ) |
0.175" |
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| Mag pri |
6.31 |
|
Mag sec |
7.05 |
|
delta mag (ΔM) |
0.74 |
|
Spectral class |
A1Vn (white) |
|
| Pri motion ra |
+024 |
|
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 |
|
Constellation |
Caelum |
|
SAO |
195357 |
|
HIP |
22573 |
|
| Tycho2 |
7049-01577-1 |
|
Gaia DR2 |
4872980219421333632 |
|
HD |
31093 |
|
HR |
1559 |
|
| GC |
5939 |
|
CD |
CD-35 1962 |
|
CP |
CP-35 551 |
|
FK5 |
2364 |
|
| Distance |
82.17 |
|
Distance ly |
268.04 |
|
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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