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 |
|
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 |
|
Obs |
8 |
|
| Pa first |
296 |
|
Pa last |
123.5 |
|
P.A. Now (θ) |
123.5° |
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| Sep first |
0.2 |
|
Sep last |
0.194 |
|
Sep. Now (ρ) |
0.194" |
|
| Mag pri |
8.75 |
|
Mag sec |
10.14 |
|
delta mag (ΔM) |
1.39 |
|
Spectral class |
F2/3V (yellow-white) |
|
| Pri motion ra |
-004 |
|
Sec motion ra |
|
|
| 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 |
|
Constellation |
Telescopium |
|
SAO |
245820 |
|
HIP |
92991 |
|
| Tycho2 |
8386-01015-1 |
|
Gaia DR2 |
6660827082994549632 |
|
HD |
175146 |
|
CD |
CD-5111834 |
|
| CP |
CP-5111062 |
|
Distance |
139.28 |
|
Distance ly |
454.33 |
|
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 |
|
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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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