21073-5702 HDS 3009 (HD 200676)
21h 07m 17.49s -57° 01' 55.4" P.A. 203.00 sep 0.3 mag 9.19,10.74 Sp K1V dist. 53.82 pc (175.56 l.y.)
| Coord 2000 |
21073-5702 |
|
Discov num |
HDS3009 |
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Comp |
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Coord arcsec 2000 |
21 07 17.49 -57 01 55.4 |
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| Date first |
1991 |
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Date last |
2021 |
|
Obs |
10 |
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| Pa first |
340 |
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Pa last |
203.2 |
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P.A. Now (θ) |
218.2° |
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| Sep first |
0.4 |
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Sep last |
0.25 |
|
Sep. Now (ρ) |
0.22" |
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| Mag pri |
9.19 |
|
Mag sec |
10.74 |
|
delta mag (ΔM) |
1.55 |
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Spectral class |
K1V (yellow-orange) |
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| Pri motion ra |
+033 |
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Sec motion ra |
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| Pri motion dec |
-115 |
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Sec motion dec |
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| Notes |
N
O
(See Notes, Orbital solution) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 200676 |
|
Constellation |
Indus |
|
SAO |
246873 |
|
HIP |
104256 |
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| Tycho2 |
8801-01044-1 |
|
Gaia DR2 |
6456916226351208192 |
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HD |
200676 |
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CP |
CP-57 9791 |
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| Distance |
53.82 |
|
Distance ly |
175.56 |
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ORBITAL ELEMENTS
| Period (P) | 54.08y | ± 4.21 |
Periastron (T) | 2013.3y | ± 0.75 |
Semi-major axis (a) | 0.3482a | ± 0.005 |
| Eccentricity (e) | 0.311 | ± 0.03 |
Inclination (i) | 56.8° | ± 1.9 |
Longitude of periastron (ω) | 143.3° | ± 8.3 |
| Node (Ω) | 350.1° | ± 1 |
Notes | n | |
Reference | Tok2016e | |
| Equinox | 2000 | |
Last observation | | |
Grade | 3 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
1.9 |
0.360 |
| 2001 |
5.3 |
0.340 |
| 2002 |
9.2 |
0.316 |
| 2003 |
13.8 |
0.291 |
| 2004 |
19.3 |
0.263 |
| 2005 |
26.0 |
0.235 |
| 2006 |
34.8 |
0.206 |
| 2007 |
46.2 |
0.179 |
| 2008 |
61.2 |
0.157 |
| 2009 |
79.8 |
0.145 |
| 2010 |
99.9 |
0.146 |
| 2011 |
118.3 |
0.159 |
| 2012 |
133.2 |
0.179 |
| 2013 |
144.9 |
0.201 |
| 2014 |
154.3 |
0.222 |
| 2015 |
162.1 |
0.239 |
| 2016 |
169.1 |
0.251 |
| 2017 |
175.6 |
0.256 |
| 2018 |
182.0 |
0.257 |
| 2019 |
188.4 |
0.254 |
| 2020 |
195.1 |
0.247 |
| 2021 |
202.2 |
0.238 |
| 2022 |
209.9 |
0.229 |
| 2023 |
218.2 |
0.220 |
| 2024 |
227.2 |
0.213 |
| 2025 |
236.7 |
0.208 |
| 2026 |
246.5 |
0.207 |
| 2027 |
256.2 |
0.209 |
| 2028 |
265.5 |
0.216 |
| 2029 |
274.2 |
0.225 |
| 2030 |
282.1 |
0.237 |
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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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