16278-4118 HDS 2327 (HD 148138)
16h 27m 48.96s -41° 18' 29.8" P.A. 210.00 sep 0.1 mag 8.42,10.22 Sp F7V dist. 88.89 pc (289.96 l.y.)
Coord 2000 |
16278-4118 |
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Discov num |
HDS2327 |
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Comp |
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Coord arcsec 2000 |
16 27 48.96 -41 18 29.8 |
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Date first |
1991 |
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Date last |
2021 |
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Obs |
6 |
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Pa first |
166 |
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Pa last |
209.9 |
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P.A. Now (θ) |
192° |
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Sep first |
0.1 |
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Sep last |
0.125 |
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Sep. Now (ρ) |
0.142" |
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Mag pri |
8.42 |
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Mag sec |
10.22 |
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delta mag (ΔM) |
1.8 |
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Spectral class |
F7V (yellow-white) |
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Pri motion ra |
+034 |
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Sec motion ra |
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Pri motion dec |
+004 |
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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 148138 |
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Constellation |
Scorpius |
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SAO |
226785 |
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HIP |
80629 |
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Tycho2 |
7861-01073-1 |
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Gaia DR2 |
5992865213572653568 |
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HD |
148138 |
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CD |
CD-4110667 |
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CP |
CP-41 7486 |
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Distance |
88.89 |
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Distance ly |
289.96 |
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ORBITAL ELEMENTS
Period (P) | 34.87y | ± 0.71 |
Periastron (T) | 2018.19y | ± 0.82 |
Semi-major axis (a) | 0.165a | ± 0.009 |
Eccentricity (e) | 0.309 | ± 0.042 |
Inclination (i) | 131.4° | ± 5.1 |
Longitude of periastron (ω) | 110.1° | ± 14.6 |
Node (Ω) | 21° | ± 4.8 |
Notes | | |
Reference | Tok2021f | |
Equinox | | |
Last observation | 2021 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
87.9 |
0.149 |
2001 |
80.2 |
0.155 |
2002 |
73.1 |
0.160 |
2003 |
66.5 |
0.166 |
2004 |
60.2 |
0.171 |
2005 |
54.4 |
0.176 |
2006 |
48.8 |
0.179 |
2007 |
43.3 |
0.181 |
2008 |
38.0 |
0.181 |
2009 |
32.5 |
0.179 |
2010 |
26.9 |
0.174 |
2011 |
20.8 |
0.167 |
2012 |
14.0 |
0.156 |
2013 |
6.1 |
0.142 |
2014 |
356.1 |
0.125 |
2015 |
342.7 |
0.106 |
2016 |
323.6 |
0.088 |
2017 |
297.1 |
0.077 |
2018 |
267.3 |
0.079 |
2019 |
242.6 |
0.092 |
2020 |
224.9 |
0.109 |
2021 |
211.8 |
0.123 |
2022 |
201.2 |
0.135 |
2023 |
192.0 |
0.142 |
2024 |
183.5 |
0.145 |
2025 |
175.2 |
0.146 |
2026 |
166.9 |
0.145 |
2027 |
158.4 |
0.143 |
2028 |
149.6 |
0.141 |
2029 |
140.6 |
0.139 |
2030 |
131.3 |
0.138 |
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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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