12428-5557 KOU 15 (HD 110461)
12h 42m 49.80s -55° 56' 49.1" P.A. 211.00 sep 0.1 mag 6.49,7.46 Sp B9V dist. 108.46 pc (353.8 l.y.)
Coord 2000 |
12428-5557 |
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Discov num |
KOU 15 |
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Comp |
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Coord arcsec 2000 |
12 42 49.80 -55 56 49.1 |
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Date first |
2000 |
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Date last |
2021 |
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Obs |
6 |
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Pa first |
13 |
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Pa last |
211 |
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P.A. Now (θ) |
211° |
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Sep first |
0.2 |
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Sep last |
0.119 |
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Sep. Now (ρ) |
0.119" |
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Mag pri |
6.49 |
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Mag sec |
7.46 |
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delta mag (ΔM) |
0.97 |
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Spectral class |
B9V (blue-white) |
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Pri motion ra |
-035 |
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Sec motion ra |
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Pri motion dec |
-017 |
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Sec motion dec |
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Notes |
O
K
(Orbital solution, K-band or other infrared magnitudes) |
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Visually invisible, K-band or other infrared star : Summary line gives K-band or other infrared (>1 micron) magnitudes
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
Name |
HD 110461 |
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Constellation |
Crux |
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SAO |
240176 |
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HIP |
62026 |
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Tycho2 |
8651-02435-1 |
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Gaia DR2 |
6073279508288863744 |
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HD |
110461 |
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HR |
4832 |
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GC |
17288 |
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CP |
CP-55 5194 |
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Distance |
108.46 |
|
Distance ly |
353.8 |
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ORBITAL ELEMENTS
Period (P) | 40y | |
Periastron (T) | 2025.42y | |
Semi-major axis (a) | 0.2a | |
Eccentricity (e) | 0.228 | |
Inclination (i) | 113.3° | |
Longitude of periastron (ω) | 188.9° | |
Node (Ω) | 5.8° | |
Notes | | |
Reference | Tok2021f | |
Equinox | | |
Last observation | 2021 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
15.6 |
0.218 |
2001 |
12.8 |
0.229 |
2002 |
10.3 |
0.237 |
2003 |
7.9 |
0.243 |
2004 |
5.6 |
0.245 |
2005 |
3.2 |
0.244 |
2006 |
0.9 |
0.241 |
2007 |
358.4 |
0.234 |
2008 |
355.8 |
0.226 |
2009 |
352.9 |
0.214 |
2010 |
349.7 |
0.200 |
2011 |
346.0 |
0.184 |
2012 |
341.4 |
0.166 |
2013 |
335.7 |
0.146 |
2014 |
328.2 |
0.126 |
2015 |
317.9 |
0.107 |
2016 |
303.4 |
0.090 |
2017 |
283.7 |
0.079 |
2018 |
260.8 |
0.078 |
2019 |
240.0 |
0.087 |
2020 |
224.0 |
0.101 |
2021 |
212.4 |
0.118 |
2022 |
203.7 |
0.134 |
2023 |
196.7 |
0.146 |
2024 |
190.5 |
0.153 |
2025 |
184.7 |
0.154 |
2026 |
178.7 |
0.149 |
2027 |
172.0 |
0.137 |
2028 |
163.6 |
0.121 |
2029 |
152.3 |
0.102 |
2030 |
136.1 |
0.084 |
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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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