17489-0152 BU 824 (HD 162008)
17h 48m 53.45s -01° 52' 12.9" P.A. 62.00 sep 0.2 mag 9.40,9.50 Sp F8
| Coord 2000 |
17489-0152 |
|
Discov num |
BU 824 |
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Comp |
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Coord arcsec 2000 |
17 48 53.45 -01 52 12.9 |
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| Date first |
1881 |
|
Date last |
2021 |
|
Obs |
28 |
|
| Pa first |
351 |
|
Pa last |
61.8 |
|
P.A. Now (θ) |
61.8° |
|
| Sep first |
0.7 |
|
Sep last |
0.2 |
|
Sep. Now (ρ) |
0.2" |
|
| Mag pri |
9.40 |
|
Mag sec |
9.50 |
|
delta mag (ΔM) |
0.1 |
|
Spectral class |
F8 (yellow-white) |
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| Pri motion ra |
-022 |
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Sec motion ra |
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| Pri motion dec |
-030 |
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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 162008 |
|
Constellation |
Ophiuchus |
|
SAO |
141891 |
|
Tycho2 |
5082-00025-1 |
|
| Gaia DR2 |
4370777287009435264 |
|
HD |
162008 |
|
ADS |
10809 |
|
ORBITAL ELEMENTS
| Period (P) | 300y | |
Periastron (T) | 2070.28y | |
Semi-major axis (a) | 0.474a | |
| Eccentricity (e) | 0.5 | |
Inclination (i) | 65° | |
Longitude of periastron (ω) | 22.1° | |
| Node (Ω) | 164.7° | |
Notes | | |
Reference | Tok2021f | |
| Equinox | | |
Last observation | 2021 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
27.3 |
0.317 |
| 2001 |
28.3 |
0.311 |
| 2002 |
29.4 |
0.305 |
| 2003 |
30.5 |
0.299 |
| 2004 |
31.6 |
0.292 |
| 2005 |
32.8 |
0.286 |
| 2006 |
34.0 |
0.280 |
| 2007 |
35.3 |
0.274 |
| 2008 |
36.6 |
0.268 |
| 2009 |
38.0 |
0.262 |
| 2010 |
39.5 |
0.256 |
| 2011 |
41.0 |
0.251 |
| 2012 |
42.6 |
0.245 |
| 2013 |
44.3 |
0.239 |
| 2014 |
46.1 |
0.234 |
| 2015 |
47.9 |
0.229 |
| 2016 |
49.9 |
0.224 |
| 2017 |
51.9 |
0.219 |
| 2018 |
54.0 |
0.214 |
| 2019 |
56.2 |
0.210 |
| 2020 |
58.5 |
0.205 |
| 2021 |
60.9 |
0.201 |
| 2022 |
63.3 |
0.197 |
| 2023 |
65.9 |
0.194 |
| 2024 |
68.6 |
0.191 |
| 2025 |
71.3 |
0.188 |
| 2026 |
74.2 |
0.185 |
| 2027 |
77.1 |
0.183 |
| 2028 |
80.0 |
0.182 |
| 2029 |
83.1 |
0.180 |
| 2030 |
86.1 |
0.179 |
|
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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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