02544-2007 HDS 371 (HD 18165)
02h 54m 24.33s -20° 07' 01.6" P.A. 347.00 sep 0.1 mag 9.23,11.59 Sp G6V dist. 87.64 pc (285.88 l.y.)
Coord 2000 |
02544-2007 |
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Discov num |
HDS 371 |
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Comp |
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Coord arcsec 2000 |
02 54 24.33 -20 07 01.6 |
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Date first |
1991 |
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Date last |
2021 |
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Obs |
9 |
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Pa first |
116 |
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Pa last |
346.8 |
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P.A. Now (θ) |
346.8° |
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Sep first |
0.4 |
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Sep last |
0.144 |
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Sep. Now (ρ) |
0.144" |
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Mag pri |
9.23 |
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Mag sec |
11.59 |
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delta mag (ΔM) |
2.36 |
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Spectral class |
G6V (yellow) |
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Pri motion ra |
+216 |
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Sec motion ra |
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Pri motion dec |
+043 |
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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
Name |
HD 18165 |
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Constellation |
Eridanus |
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SAO |
168133 |
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HIP |
13542 |
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Tycho2 |
5870-00179-1 |
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HD |
18165 |
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BD |
BD-20 540 |
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Distance |
87.64 |
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Distance ly |
285.88 |
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ORBITAL ELEMENTS
Period (P) | 132y | |
Periastron (T) | 2022.3y | |
Semi-major axis (a) | 0.35a | |
Eccentricity (e) | 0.303 | |
Inclination (i) | 120° | |
Longitude of periastron (ω) | 118.4° | |
Node (Ω) | 116.3° | |
Notes | | |
Reference | Tok2018i | |
Equinox | 2000 | |
Last observation | 2018 | |
Grade | 5 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
104.4 |
0.309 |
2001 |
102.7 |
0.298 |
2002 |
100.9 |
0.288 |
2003 |
98.9 |
0.277 |
2004 |
96.7 |
0.265 |
2005 |
94.3 |
0.253 |
2006 |
91.7 |
0.240 |
2007 |
88.8 |
0.227 |
2008 |
85.5 |
0.214 |
2009 |
81.8 |
0.201 |
2010 |
77.5 |
0.187 |
2011 |
72.7 |
0.174 |
2012 |
67.0 |
0.162 |
2013 |
60.5 |
0.151 |
2014 |
53.0 |
0.141 |
2015 |
44.5 |
0.133 |
2016 |
35.2 |
0.128 |
2017 |
25.2 |
0.125 |
2018 |
15.1 |
0.126 |
2019 |
5.3 |
0.130 |
2020 |
356.2 |
0.136 |
2021 |
348.1 |
0.145 |
2022 |
341.0 |
0.155 |
2023 |
334.8 |
0.166 |
2024 |
329.4 |
0.178 |
2025 |
324.7 |
0.190 |
2026 |
320.5 |
0.202 |
2027 |
316.8 |
0.213 |
2028 |
313.5 |
0.224 |
2029 |
310.5 |
0.234 |
2030 |
307.7 |
0.244 |
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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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