16544-3806 HDS 2392 (HD 152331)
16h 54m 22.12s -38° 05' 53.5" P.A. 128.00 sep 0.3 mag 8.66,10.97 Sp G0V dist. 64.27 pc (209.65 l.y.)
Coord 2000 |
16544-3806 |
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Discov num |
HDS2392 |
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Comp |
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Coord arcsec 2000 |
16 54 22.12 -38 05 53.5 |
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Date first |
1991 |
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Date last |
2021 |
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Obs |
11 |
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Pa first |
143 |
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Pa last |
127.9 |
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P.A. Now (θ) |
118.4° |
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Sep first |
0.2 |
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Sep last |
0.264 |
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Sep. Now (ρ) |
0.267" |
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Mag pri |
8.66 |
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Mag sec |
10.97 |
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delta mag (ΔM) |
2.31 |
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Spectral class |
G0V (yellow) |
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Pri motion ra |
-060 |
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Sec motion ra |
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Pri motion dec |
-058 |
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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 152331 |
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Constellation |
Scorpius |
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SAO |
208162 |
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HIP |
82709 |
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Tycho2 |
7868-00063-1 |
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Gaia DR2 |
5971248471386452736 |
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HD |
152331 |
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CD |
CD-3711065 |
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CP |
CP-37 6781 |
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Distance |
64.27 |
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Distance ly |
209.65 |
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ORBITAL ELEMENTS
Period (P) | 26.48y | ± 0.67 |
Periastron (T) | 2009.459y | ± 0.086 |
Semi-major axis (a) | 0.1858a | ± 0.0045 |
Eccentricity (e) | 0.5 | |
Inclination (i) | 134.7° | ± 2 |
Longitude of periastron (ω) | 154.8° | ± 2.8 |
Node (Ω) | 101.3° | ± 3.2 |
Notes | | |
Reference | Tok2016e | |
Equinox | 2000 | |
Last observation | | |
Grade | 3 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
104.5 |
0.261 |
2001 |
100.2 |
0.252 |
2002 |
95.4 |
0.238 |
2003 |
90.0 |
0.219 |
2004 |
83.3 |
0.196 |
2005 |
74.7 |
0.168 |
2006 |
62.3 |
0.136 |
2007 |
41.7 |
0.103 |
2008 |
5.0 |
0.079 |
2009 |
317.8 |
0.081 |
2010 |
281.5 |
0.096 |
2011 |
252.7 |
0.102 |
2012 |
226.3 |
0.106 |
2013 |
202.9 |
0.116 |
2014 |
184.0 |
0.132 |
2015 |
169.6 |
0.151 |
2016 |
158.5 |
0.171 |
2017 |
149.8 |
0.191 |
2018 |
142.7 |
0.210 |
2019 |
136.7 |
0.227 |
2020 |
131.5 |
0.241 |
2021 |
126.8 |
0.252 |
2022 |
122.5 |
0.261 |
2023 |
118.4 |
0.267 |
2024 |
114.4 |
0.270 |
2025 |
110.5 |
0.269 |
2026 |
106.5 |
0.265 |
2027 |
102.3 |
0.257 |
2028 |
97.8 |
0.245 |
2029 |
92.7 |
0.229 |
2030 |
86.7 |
0.208 |
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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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