18567-5102 RST 5456 (HD 175146)
18h 56m 41.04s -51° 01' 38.4" P.A. 124.00 sep 0.2 mag 8.75,10.14 Sp F2/3V dist. 139.28 pc (454.33 l.y.)
Coord 2000 |
18567-5102 |
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Discov num |
RST5456 |
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Comp |
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Coord arcsec 2000 |
18 56 41.04 -51 01 38.4 |
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Date first |
1946 |
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Date last |
2021 |
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Obs |
8 |
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Pa first |
296 |
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Pa last |
123.5 |
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P.A. Now (θ) |
123.5° |
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Sep first |
0.2 |
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Sep last |
0.194 |
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Sep. Now (ρ) |
0.194" |
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Mag pri |
8.75 |
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Mag sec |
10.14 |
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delta mag (ΔM) |
1.39 |
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Spectral class |
F2/3V (yellow-white) |
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Pri motion ra |
-004 |
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Sec motion ra |
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Pri motion dec |
-047 |
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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 175146 |
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Constellation |
Telescopium |
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SAO |
245820 |
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HIP |
92991 |
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Tycho2 |
8386-01015-1 |
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Gaia DR2 |
6660827082994549632 |
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HD |
175146 |
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CD |
CD-5111834 |
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CP |
CP-5111062 |
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Distance |
139.28 |
|
Distance ly |
454.33 |
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ORBITAL ELEMENTS
Period (P) | 77.5y | ± 5.9 |
Periastron (T) | 1979y | ± 4.4 |
Semi-major axis (a) | 0.169a | ± 0.007 |
Eccentricity (e) | 0.17 | ± 0.06 |
Inclination (i) | 135° | ± 6.3 |
Longitude of periastron (ω) | 154° | ± 23 |
Node (Ω) | 120.7° | ± 5.1 |
Notes | | |
Reference | Tok2021f | |
Equinox | | |
Last observation | 2021 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
210.7 |
0.125 |
2001 |
204.9 |
0.127 |
2002 |
199.3 |
0.130 |
2003 |
193.9 |
0.132 |
2004 |
188.7 |
0.136 |
2005 |
183.8 |
0.139 |
2006 |
179.2 |
0.143 |
2007 |
174.9 |
0.148 |
2008 |
170.7 |
0.152 |
2009 |
166.8 |
0.156 |
2010 |
163.1 |
0.161 |
2011 |
159.6 |
0.165 |
2012 |
156.3 |
0.169 |
2013 |
153.2 |
0.173 |
2014 |
150.1 |
0.177 |
2015 |
147.2 |
0.180 |
2016 |
144.4 |
0.183 |
2017 |
141.7 |
0.186 |
2018 |
139.1 |
0.189 |
2019 |
136.5 |
0.191 |
2020 |
134.0 |
0.192 |
2021 |
131.5 |
0.194 |
2022 |
129.1 |
0.194 |
2023 |
126.6 |
0.195 |
2024 |
124.2 |
0.195 |
2025 |
121.7 |
0.194 |
2026 |
119.3 |
0.193 |
2027 |
116.8 |
0.191 |
2028 |
114.2 |
0.189 |
2029 |
111.6 |
0.187 |
2030 |
108.9 |
0.184 |
2031 |
106.1 |
0.180 |
2032 |
103.2 |
0.176 |
2033 |
100.2 |
0.172 |
2034 |
97.0 |
0.167 |
2035 |
93.6 |
0.162 |
2036 |
89.9 |
0.157 |
2037 |
86.1 |
0.151 |
2038 |
81.9 |
0.146 |
2039 |
77.3 |
0.140 |
2040 |
72.4 |
0.134 |
2041 |
67.0 |
0.128 |
2042 |
61.1 |
0.123 |
2043 |
54.8 |
0.118 |
2044 |
47.9 |
0.114 |
2045 |
40.6 |
0.111 |
2046 |
32.9 |
0.108 |
2047 |
24.9 |
0.107 |
2048 |
16.9 |
0.107 |
2049 |
8.9 |
0.108 |
2050 |
1.1 |
0.110 |
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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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