20562-3146 B 1001 (HD 199147)
20h 56m 12.31s -31° 45' 58.7" P.A. 212.00 sep 0.3 mag 9.40,9.70 Sp F7V
| Coord 2000 |
20562-3146 |
|
Discov num |
B 1001 |
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Comp |
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Coord arcsec 2000 |
20 56 12.31 -31 45 58.7 |
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| Date first |
1927 |
|
Date last |
2014 |
|
Obs |
17 |
|
| Pa first |
61 |
|
Pa last |
212 |
|
P.A. Now (θ) |
212° |
|
| Sep first |
0.3 |
|
Sep last |
0.273 |
|
Sep. Now (ρ) |
0.273" |
|
| Mag pri |
9.40 |
|
Mag sec |
9.70 |
|
delta mag (ΔM) |
0.3 |
|
Spectral class |
F7V (yellow-white) |
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| Pri motion ra |
-030 |
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Sec motion ra |
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|
| Pri motion dec |
-002 |
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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 199147 |
|
Constellation |
Microscopium |
|
SAO |
212553 |
|
Tycho2 |
7458-00086-1 |
|
| Gaia DR2 |
6782161798891575936 |
|
HD |
199147 |
|
ORBITAL ELEMENTS
| Period (P) | 265.93y | ± 10.98 |
Periastron (T) | 1969.51y | ± 2.93 |
Semi-major axis (a) | 0.322a | ± 0.016 |
| Eccentricity (e) | 0.369 | ± 0.021 |
Inclination (i) | 131.2° | ± 3.7 |
Longitude of periastron (ω) | 219° | ± 9.4 |
| Node (Ω) | 187° | ± 5.1 |
Notes | | |
Reference | Tok2015c | |
| Equinox | 2000 | |
Last observation | 2014 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
236.7 |
0.197 |
| 2001 |
234.6 |
0.202 |
| 2002 |
232.5 |
0.207 |
| 2003 |
230.6 |
0.213 |
| 2004 |
228.7 |
0.218 |
| 2005 |
226.9 |
0.223 |
| 2006 |
225.3 |
0.228 |
| 2007 |
223.6 |
0.234 |
| 2008 |
222.1 |
0.239 |
| 2009 |
220.6 |
0.244 |
| 2010 |
219.2 |
0.249 |
| 2011 |
217.9 |
0.254 |
| 2012 |
216.6 |
0.259 |
| 2013 |
215.3 |
0.264 |
| 2014 |
214.1 |
0.269 |
| 2015 |
212.9 |
0.274 |
| 2016 |
211.8 |
0.279 |
| 2017 |
210.7 |
0.284 |
| 2018 |
209.7 |
0.289 |
| 2019 |
208.7 |
0.293 |
| 2020 |
207.7 |
0.298 |
| 2021 |
206.7 |
0.302 |
| 2022 |
205.8 |
0.306 |
| 2023 |
204.9 |
0.311 |
| 2024 |
204.0 |
0.315 |
| 2025 |
203.2 |
0.319 |
| 2026 |
202.3 |
0.323 |
| 2027 |
201.5 |
0.327 |
| 2028 |
200.7 |
0.331 |
| 2029 |
199.9 |
0.334 |
| 2030 |
199.2 |
0.338 |
|
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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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