15394-1355 HDS 2210 (HD 139591)
15h 39m 26.44s -13° 54' 38.8" P.A. 129.00 sep 0.1 mag 8.78,9.09 Sp F7V dist. 76.39 pc (249.18 l.y.)
Coord 2000 |
15394-1355 |
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Discov num |
HDS2210 |
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Comp |
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Coord arcsec 2000 |
15 39 26.44 -13 54 38.8 |
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Date first |
1991 |
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Date last |
2021 |
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Obs |
8 |
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Pa first |
356 |
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Pa last |
128.9 |
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P.A. Now (θ) |
68.8° |
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Sep first |
0.2 |
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Sep last |
0.076 |
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Sep. Now (ρ) |
0.053" |
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Mag pri |
8.78 |
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Mag sec |
9.09 |
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delta mag (ΔM) |
0.31 |
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Spectral class |
F7V (yellow-white) |
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Pri motion ra |
-055 |
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Sec motion ra |
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Pri motion dec |
-160 |
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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 139591 |
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Constellation |
Libra |
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SAO |
159415 |
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HIP |
76676 |
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Tycho2 |
5608-00204-1 |
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Gaia DR2 |
6265527016146835456 |
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HD |
139591 |
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BD |
BD-13 4216 |
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Distance |
76.39 |
|
Distance ly |
249.18 |
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ORBITAL ELEMENTS
Period (P) | 39.188y | |
Periastron (T) | 2017.75y | |
Semi-major axis (a) | 0.174a | |
Eccentricity (e) | 0.065 | |
Inclination (i) | 108.2° | |
Longitude of periastron (ω) | 220° | |
Node (Ω) | 351.7° | |
Notes | n | |
Reference | Tok2018e | |
Equinox | 2000 | |
Last observation | 2018 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
327.7 |
0.116 |
2001 |
320.1 |
0.098 |
2002 |
309.0 |
0.080 |
2003 |
292.2 |
0.065 |
2004 |
268.2 |
0.057 |
2005 |
241.7 |
0.059 |
2006 |
220.8 |
0.071 |
2007 |
206.8 |
0.088 |
2008 |
197.4 |
0.106 |
2009 |
190.7 |
0.123 |
2010 |
185.6 |
0.138 |
2011 |
181.5 |
0.150 |
2012 |
177.9 |
0.159 |
2013 |
174.6 |
0.164 |
2014 |
171.4 |
0.165 |
2015 |
168.1 |
0.161 |
2016 |
164.6 |
0.153 |
2017 |
160.6 |
0.140 |
2018 |
155.7 |
0.125 |
2019 |
149.1 |
0.106 |
2020 |
139.6 |
0.086 |
2021 |
124.6 |
0.067 |
2022 |
100.2 |
0.054 |
2023 |
68.8 |
0.053 |
2024 |
43.2 |
0.065 |
2025 |
27.2 |
0.084 |
2026 |
17.3 |
0.104 |
2027 |
10.6 |
0.124 |
2028 |
5.6 |
0.142 |
2029 |
1.7 |
0.157 |
2030 |
358.5 |
0.168 |
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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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