12111-5302 HU 1604 (HD 105856)
12h 11m 05.27s -53° 02' 17.2" P.A. 39.00 sep 0.2 mag 10.19,10.54 Sp F9V+G1V dist. 103.52 pc (337.68 l.y.)
Coord 2000 |
12111-5302 |
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Discov num |
HU 1604 |
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Comp |
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Coord arcsec 2000 |
12 11 05.27 -53 02 17.2 |
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Date first |
1914 |
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Date last |
2021 |
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Obs |
14 |
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Pa first |
281 |
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Pa last |
38.6 |
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P.A. Now (θ) |
38.6° |
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Sep first |
0.4 |
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Sep last |
0.193 |
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Sep. Now (ρ) |
0.193" |
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Mag pri |
10.19 |
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Mag sec |
10.54 |
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delta mag (ΔM) |
0.35 |
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Spectral class |
F9V+G1V (yellow-white/yellow) |
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Pri motion ra |
-076 |
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Sec motion ra |
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Pri motion dec |
+027 |
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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 105856 |
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Constellation |
Centaurus |
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SAO |
239726 |
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HIP |
59395 |
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Tycho2 |
8632-00218-1 |
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Gaia DR2 |
6125076126677677952 |
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HD |
105856 |
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CP |
CP-52 5302 |
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Distance |
103.52 |
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Distance ly |
337.68 |
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ORBITAL ELEMENTS
Period (P) | 205y | |
Periastron (T) | 2049y | |
Semi-major axis (a) | 0.341a | |
Eccentricity (e) | 0.431 | |
Inclination (i) | 55.6° | |
Longitude of periastron (ω) | 32.7° | |
Node (Ω) | 89.2° | |
Notes | | |
Reference | Doc2020d | |
Equinox | 2000 | |
Last observation | 2018 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
343.3 |
0.226 |
2001 |
345.4 |
0.222 |
2002 |
347.5 |
0.219 |
2003 |
349.7 |
0.216 |
2004 |
352.0 |
0.213 |
2005 |
354.3 |
0.210 |
2006 |
356.7 |
0.207 |
2007 |
359.2 |
0.204 |
2008 |
1.7 |
0.202 |
2009 |
4.3 |
0.200 |
2010 |
6.9 |
0.198 |
2011 |
9.6 |
0.197 |
2012 |
12.3 |
0.196 |
2013 |
15.0 |
0.195 |
2014 |
17.8 |
0.194 |
2015 |
20.5 |
0.193 |
2016 |
23.3 |
0.193 |
2017 |
26.1 |
0.193 |
2018 |
28.9 |
0.193 |
2019 |
31.7 |
0.194 |
2020 |
34.5 |
0.194 |
2021 |
37.2 |
0.195 |
2022 |
39.9 |
0.196 |
2023 |
42.6 |
0.197 |
2024 |
45.3 |
0.198 |
2025 |
47.9 |
0.200 |
2026 |
50.5 |
0.201 |
2027 |
53.0 |
0.203 |
2028 |
55.6 |
0.204 |
2029 |
58.0 |
0.206 |
2030 |
60.5 |
0.207 |
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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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