17181-3810 SEE 324 (HD 156232)
17h 18m 05.47s -38° 09' 50.3" P.A. 83.00 sep 0.1 mag 7.51,7.91 Sp A0IV dist. 184.16 pc (600.73 l.y.)
| Coord 2000 |
17181-3810 |
|
Discov num |
SEE 324 |
|
Comp |
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Coord arcsec 2000 |
17 18 05.47 -38 09 50.3 |
|
| Date first |
1897 |
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Date last |
2021 |
|
Obs |
14 |
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| Pa first |
35 |
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Pa last |
82.6 |
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P.A. Now (θ) |
74.8° |
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| Sep first |
0.3 |
|
Sep last |
0.117 |
|
Sep. Now (ρ) |
0.112" |
|
| Mag pri |
7.51 |
|
Mag sec |
7.91 |
|
delta mag (ΔM) |
0.4 |
|
Spectral class |
A0IV (white) |
|
| Pri motion ra |
-013 |
|
Sec motion ra |
|
|
| Pri motion dec |
-008 |
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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 156232 |
|
Constellation |
Scorpius |
|
SAO |
208650 |
|
HIP |
84634 |
|
| Tycho2 |
7870-00846-1 |
|
Gaia DR2 |
5972751950454025728 |
|
HD |
156232 |
|
GC |
23338 |
|
| CD |
CD-3811730 |
|
CP |
CP-38 6773 |
|
Distance |
184.16 |
|
Distance ly |
600.73 |
|
ORBITAL ELEMENTS
| Period (P) | 93y | ± 15 |
Periastron (T) | 2020.8y | ± 1.8 |
Semi-major axis (a) | 190.6m | ± 8.9 |
| Eccentricity (e) | 0.396 | ± 0.037 |
Inclination (i) | 118.1° | ± 2.9 |
Longitude of periastron (ω) | 359° | ± 38 |
| Node (Ω) | 84.6° | ± 2.2 |
Notes | | |
Reference | Mdz2021 | |
| Equinox | | |
Last observation | | |
Grade | 3 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
231.1 |
0.144 |
| 2001 |
228.0 |
0.135 |
| 2002 |
224.4 |
0.126 |
| 2003 |
220.3 |
0.117 |
| 2004 |
215.5 |
0.108 |
| 2005 |
209.9 |
0.100 |
| 2006 |
203.2 |
0.092 |
| 2007 |
195.5 |
0.085 |
| 2008 |
186.4 |
0.080 |
| 2009 |
176.3 |
0.076 |
| 2010 |
165.3 |
0.074 |
| 2011 |
154.1 |
0.074 |
| 2012 |
143.3 |
0.076 |
| 2013 |
133.4 |
0.080 |
| 2014 |
124.5 |
0.086 |
| 2015 |
116.8 |
0.092 |
| 2016 |
110.0 |
0.098 |
| 2017 |
103.9 |
0.103 |
| 2018 |
98.5 |
0.108 |
| 2019 |
93.5 |
0.112 |
| 2020 |
88.8 |
0.114 |
| 2021 |
84.2 |
0.115 |
| 2022 |
79.5 |
0.114 |
| 2023 |
74.8 |
0.112 |
| 2024 |
69.8 |
0.108 |
| 2025 |
64.3 |
0.103 |
| 2026 |
58.3 |
0.097 |
| 2027 |
51.5 |
0.092 |
| 2028 |
43.7 |
0.086 |
| 2029 |
34.9 |
0.081 |
| 2030 |
25.1 |
0.077 |
|
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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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