17297-4947 I 1323 (HD 158059)
17h 29m 40.70s -49° 47' 23.6" P.A. 126.00 sep 0.3 mag 8.55,8.87 Sp F5V dist. 68.73 pc (224.2 l.y.)
| Coord 2000 |
17297-4947 |
|
Discov num |
I 1323 |
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Comp |
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Coord arcsec 2000 |
17 29 40.70 -49 47 23.6 |
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| Date first |
1926 |
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Date last |
2021 |
|
Obs |
18 |
|
| Pa first |
119 |
|
Pa last |
126.4 |
|
P.A. Now (θ) |
131.6° |
|
| Sep first |
0.4 |
|
Sep last |
0.349 |
|
Sep. Now (ρ) |
0.351" |
|
| Mag pri |
8.55 |
|
Mag sec |
8.87 |
|
delta mag (ΔM) |
0.32 |
|
Spectral class |
F5V (yellow-white) |
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| Pri motion ra |
-003 |
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Sec motion ra |
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| Pri motion dec |
-052 |
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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 158059 |
|
Constellation |
Ara |
|
SAO |
228019 |
|
HIP |
85610 |
|
| Tycho2 |
8350-02571-1 |
|
Gaia DR2 |
5949475976465859584 |
|
HD |
158059 |
|
CD |
CD-4911479 |
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| CP |
CP-4910022 |
|
Distance |
68.73 |
|
Distance ly |
224.2 |
|
ORBITAL ELEMENTS
| Period (P) | 42.5y | |
Periastron (T) | 2000.85y | |
Semi-major axis (a) | 0.224a | |
| Eccentricity (e) | 0.58 | |
Inclination (i) | 46.8° | |
Longitude of periastron (ω) | 167.9° | |
| Node (Ω) | 138.2° | |
Notes | n | |
Reference | Tok2018b | |
| Equinox | 2000 | |
Last observation | 2017 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
284.7 |
0.086 |
| 2001 |
313.9 |
0.094 |
| 2002 |
339.7 |
0.097 |
| 2003 |
4.9 |
0.097 |
| 2004 |
28.7 |
0.103 |
| 2005 |
48.7 |
0.116 |
| 2006 |
63.9 |
0.134 |
| 2007 |
75.4 |
0.155 |
| 2008 |
84.1 |
0.176 |
| 2009 |
90.9 |
0.197 |
| 2010 |
96.4 |
0.217 |
| 2011 |
101.1 |
0.236 |
| 2012 |
105.0 |
0.254 |
| 2013 |
108.5 |
0.270 |
| 2014 |
111.5 |
0.285 |
| 2015 |
114.3 |
0.298 |
| 2016 |
116.9 |
0.310 |
| 2017 |
119.3 |
0.320 |
| 2018 |
121.5 |
0.329 |
| 2019 |
123.7 |
0.337 |
| 2020 |
125.7 |
0.342 |
| 2021 |
127.7 |
0.347 |
| 2022 |
129.7 |
0.350 |
| 2023 |
131.6 |
0.351 |
| 2024 |
133.5 |
0.351 |
| 2025 |
135.5 |
0.349 |
| 2026 |
137.4 |
0.345 |
| 2027 |
139.4 |
0.340 |
| 2028 |
141.5 |
0.333 |
| 2029 |
143.7 |
0.325 |
| 2030 |
146.0 |
0.314 |
|
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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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