10217-0946 BU 25 (HD 89795)
10h 21m 43.46s -09° 46' 25.9" P.A. 127.00 sep 1.5 mag 8.41,8.96 Sp G5 dist. 59.95 pc (195.56 l.y.)
| Coord 2000 |
10217-0946 |
|
Discov num |
BU 25 |
|
Comp |
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Coord arcsec 2000 |
10 21 43.46 -09 46 25.9 |
|
| Date first |
1867 |
|
Date last |
2021 |
|
Obs |
97 |
|
| Pa first |
188 |
|
Pa last |
127.3 |
|
P.A. Now (θ) |
127.3° |
|
| Sep first |
0.9 |
|
Sep last |
1.542 |
|
Sep. Now (ρ) |
1.542" |
|
| Mag pri |
8.41 |
|
Mag sec |
8.96 |
|
delta mag (ΔM) |
0.55 |
|
Spectral class |
G5 (yellow) |
|
| Pri motion ra |
+009 |
|
Sec motion ra |
|
|
| Pri motion dec |
-040 |
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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 89795 |
|
Constellation |
Sextans |
|
SAO |
137515 |
|
HIP |
50747 |
|
| Tycho2 |
5490-00124-1 |
|
Gaia DR2 |
3768135204334961792 |
|
HD |
89795 |
|
GC |
14228 |
|
| ADS |
7738 |
|
BD |
BD-09 3052 |
|
Distance |
59.95 |
|
Distance ly |
195.56 |
|
ORBITAL ELEMENTS
| Period (P) | 1340y | |
Periastron (T) | 1960.5y | |
Semi-major axis (a) | 2.546a | |
| Eccentricity (e) | 0.297 | |
Inclination (i) | 133.9° | |
Longitude of periastron (ω) | 20.3° | |
| Node (Ω) | 168.2° | |
Notes | | |
Reference | Doc2020d | |
| Equinox | 2000 | |
Last observation | 2018 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
137.5 |
1.604 |
| 2001 |
137.0 |
1.600 |
| 2002 |
136.6 |
1.597 |
| 2003 |
136.1 |
1.593 |
| 2004 |
135.7 |
1.590 |
| 2005 |
135.2 |
1.586 |
| 2006 |
134.7 |
1.583 |
| 2007 |
134.3 |
1.579 |
| 2008 |
133.8 |
1.576 |
| 2009 |
133.4 |
1.572 |
| 2010 |
132.9 |
1.569 |
| 2011 |
132.4 |
1.565 |
| 2012 |
131.9 |
1.562 |
| 2013 |
131.5 |
1.559 |
| 2014 |
131.0 |
1.555 |
| 2015 |
130.5 |
1.552 |
| 2016 |
130.0 |
1.548 |
| 2017 |
129.6 |
1.545 |
| 2018 |
129.1 |
1.542 |
| 2019 |
128.6 |
1.538 |
| 2020 |
128.1 |
1.535 |
| 2021 |
127.6 |
1.532 |
| 2022 |
127.1 |
1.529 |
| 2023 |
126.6 |
1.526 |
| 2024 |
126.1 |
1.522 |
| 2025 |
125.6 |
1.519 |
| 2026 |
125.1 |
1.516 |
| 2027 |
124.6 |
1.513 |
| 2028 |
124.1 |
1.510 |
| 2029 |
123.6 |
1.507 |
| 2030 |
123.1 |
1.504 |
|
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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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