20111-5731 HDO 295 (HD 191095)
20h 11m 07.43s -57° 31' 27.3" P.A. 301.00 sep 0.2 mag 6.76,7.68 Sp B7V+A3V dist. 160 pc (521.92 l.y.)
| Coord 2000 |
20111-5731 |
|
Discov num |
HDO 295 |
|
Comp |
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|
Coord arcsec 2000 |
20 11 07.43 -57 31 27.3 |
|
| Date first |
1901 |
|
Date last |
2021 |
|
Obs |
29 |
|
| Pa first |
228 |
|
Pa last |
300.9 |
|
P.A. Now (θ) |
300.9° |
|
| Sep first |
0.7 |
|
Sep last |
0.247 |
|
Sep. Now (ρ) |
0.247" |
|
| Mag pri |
6.76 |
|
Mag sec |
7.68 |
|
delta mag (ΔM) |
0.92 |
|
Spectral class |
B7V+A3V (blue-white/white) |
|
| Pri motion ra |
+016 |
|
Sec motion ra |
+016 |
|
| Pri motion dec |
-035 |
|
Sec motion dec |
-035 |
|
| Notes |
N
O
(See Notes, Orbital solution) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 191095 |
|
Constellation |
Pavo |
|
SAO |
246470 |
|
HIP |
99453 |
|
| Tycho2 |
8784-01295-1 |
|
Gaia DR2 |
6444646501219089408 |
|
HD |
191095 |
|
HR |
7691 |
|
| GC |
27966 |
|
CP |
CP-57 9622 |
|
Distance |
160 |
|
Distance ly |
521.92 |
|
ORBITAL ELEMENTS
| Period (P) | 500y | |
Periastron (T) | 2030.1y | |
Semi-major axis (a) | 0.862a | |
| Eccentricity (e) | 0.6 | |
Inclination (i) | 66.4° | |
Longitude of periastron (ω) | 262.5° | |
| Node (Ω) | 93.9° | |
Notes | n | |
Reference | Tok2021f | |
| Equinox | 2000 | |
Last observation | 2021 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
274.3 |
0.507 |
| 2001 |
274.9 |
0.499 |
| 2002 |
275.6 |
0.490 |
| 2003 |
276.4 |
0.481 |
| 2004 |
277.1 |
0.472 |
| 2005 |
277.9 |
0.462 |
| 2006 |
278.7 |
0.452 |
| 2007 |
279.6 |
0.441 |
| 2008 |
280.5 |
0.430 |
| 2009 |
281.4 |
0.419 |
| 2010 |
282.4 |
0.407 |
| 2011 |
283.5 |
0.395 |
| 2012 |
284.6 |
0.383 |
| 2013 |
285.9 |
0.370 |
| 2014 |
287.2 |
0.357 |
| 2015 |
288.6 |
0.343 |
| 2016 |
290.1 |
0.329 |
| 2017 |
291.7 |
0.315 |
| 2018 |
293.5 |
0.301 |
| 2019 |
295.5 |
0.286 |
| 2020 |
297.7 |
0.271 |
| 2021 |
300.2 |
0.256 |
| 2022 |
303.0 |
0.241 |
| 2023 |
306.1 |
0.227 |
| 2024 |
309.7 |
0.212 |
| 2025 |
313.7 |
0.198 |
| 2026 |
318.4 |
0.185 |
| 2027 |
323.8 |
0.172 |
| 2028 |
330.0 |
0.161 |
| 2029 |
337.0 |
0.152 |
| 2030 |
344.9 |
0.145 |
|
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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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