09128-6055 HDO 207 AB
09h 12m 50.63s -60° 55' 00.5" P.A. 124.00 sep 0.1 mag 6.97,7.27 Sp B9V dist. 173.31 pc (565.34 l.y.)
Coord 2000 |
09128-6055 |
|
Discov num |
HDO 207 |
|
Comp |
AB |
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Coord arcsec 2000 |
09 12 50.63 -60 55 00.5 |
|
Date first |
1915 |
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Date last |
2021 |
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Obs |
46 |
|
Pa first |
53 |
|
Pa last |
124.2 |
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P.A. Now (θ) |
124.2° |
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Sep first |
0.3 |
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Sep last |
0.123 |
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Sep. Now (ρ) |
0.123" |
|
Mag pri |
6.97 |
|
Mag sec |
7.27 |
|
delta mag (ΔM) |
0.3 |
|
Spectral class |
B9V (blue-white) |
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Pri motion ra |
-022 |
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Sec motion ra |
|
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Pri motion dec |
+019 |
|
Sec motion dec |
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Notes |
N
O
(See Notes, Orbital solution) |
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This double is physical.
09128-6055 SYSTEM COMPONENTS
Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
Show |
HD 79699 |
250485 |
09 12 51 -60 55 00 |
CHR 144 Aa,Ab |
1989 |
1 |
35 |
0.0 |
6.50 |
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Show |
|
250485 |
09 12 51 -60 55 00 |
HDO 207 AB |
2021 |
46 |
124 |
0.1 |
6.97 |
7.27 |
0.30 |
Y |
<=== |
Triple system
2 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Constellation |
Carina |
|
SAO |
250485 |
|
HIP |
45214 |
|
Tycho2 |
8940-02645-1 |
|
Gaia DR2 |
5299769848327101184 |
|
HD |
79699 |
|
GC |
12739 |
|
CP |
CP-60 1353 |
|
Distance |
173.31 |
|
Distance ly |
565.34 |
|
ORBITAL ELEMENTS
Period (P) | 400y | ± 30 |
Periastron (T) | 1960.65y | ± 1.65 |
Semi-major axis (a) | 0.548a | ± 0.007 |
Eccentricity (e) | 0.538 | ± 0.05 |
Inclination (i) | 76.4° | ± 1.5 |
Longitude of periastron (ω) | 149° | ± 5 |
Node (Ω) | 223.7° | ± 1.5 |
Notes | n | |
Reference | Doc2016d | |
Equinox | 2000 | |
Last observation | 2013 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
70.7 |
0.195 |
2001 |
72.1 |
0.190 |
2002 |
73.7 |
0.185 |
2003 |
75.3 |
0.180 |
2004 |
77.0 |
0.176 |
2005 |
78.7 |
0.171 |
2006 |
80.6 |
0.167 |
2007 |
82.6 |
0.162 |
2008 |
84.7 |
0.158 |
2009 |
86.9 |
0.154 |
2010 |
89.2 |
0.150 |
2011 |
91.7 |
0.146 |
2012 |
94.2 |
0.143 |
2013 |
96.9 |
0.140 |
2014 |
99.7 |
0.137 |
2015 |
102.7 |
0.134 |
2016 |
105.7 |
0.132 |
2017 |
108.8 |
0.130 |
2018 |
112.1 |
0.128 |
2019 |
115.4 |
0.127 |
2020 |
118.8 |
0.126 |
2021 |
122.2 |
0.125 |
2022 |
125.6 |
0.125 |
2023 |
129.0 |
0.126 |
2024 |
132.4 |
0.126 |
2025 |
135.7 |
0.127 |
2026 |
139.0 |
0.129 |
2027 |
142.1 |
0.131 |
2028 |
145.2 |
0.133 |
2029 |
148.2 |
0.136 |
2030 |
151.0 |
0.139 |
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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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