10260+0256 A 2570 (HD 90361)
10h 25m 58.68s +02° 55' 45.2" P.A. 184.00 sep 0.0 mag 7.79,7.71 Sp A2V dist. 170.36 pc (555.71 l.y.)
| Coord 2000 |
10260+0256 |
|
Discov num |
A 2570 |
|
Comp |
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Coord arcsec 2000 |
10 25 58.68 +02 55 45.2 |
|
| Date first |
1913 |
|
Date last |
2021 |
|
Obs |
57 |
|
| Pa first |
330 |
|
Pa last |
184.2 |
|
P.A. Now (θ) |
184.2° |
|
| Sep first |
0.4 |
|
Sep last |
0.022 |
|
Sep. Now (ρ) |
0.022" |
|
| Mag pri |
7.79 |
|
Mag sec |
7.71 |
|
delta mag (ΔM) |
0.08 |
|
Spectral class |
A2V (white) |
|
| Pri motion ra |
-032 |
|
Sec motion ra |
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|
| Pri motion dec |
-001 |
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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 90361 |
|
Constellation |
Sextans |
|
SAO |
118296 |
|
HIP |
51061 |
|
| Tycho2 |
0249-00959-1 |
|
Gaia DR2 |
3856672171275658240 |
|
HD |
90361 |
|
GC |
14322 |
|
| ADS |
7769 |
|
BD |
BD+03 2365 |
|
Distance |
170.36 |
|
Distance ly |
555.71 |
|
ORBITAL ELEMENTS
| Period (P) | 174y | |
Periastron (T) | 2023.5y | |
Semi-major axis (a) | 0.245a | |
| Eccentricity (e) | 0.83 | |
Inclination (i) | 114.3° | |
Longitude of periastron (ω) | 329.4° | |
| Node (Ω) | 122.9° | |
Notes | | |
Reference | Tok2019c | |
| Equinox | | |
Last observation | 2018 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
302.8 |
0.266 |
| 2001 |
302.4 |
0.259 |
| 2002 |
302.0 |
0.252 |
| 2003 |
301.5 |
0.245 |
| 2004 |
301.0 |
0.237 |
| 2005 |
300.5 |
0.229 |
| 2006 |
299.9 |
0.220 |
| 2007 |
299.3 |
0.212 |
| 2008 |
298.7 |
0.202 |
| 2009 |
297.9 |
0.193 |
| 2010 |
297.1 |
0.183 |
| 2011 |
296.2 |
0.172 |
| 2012 |
295.2 |
0.161 |
| 2013 |
294.0 |
0.150 |
| 2014 |
292.6 |
0.137 |
| 2015 |
291.0 |
0.124 |
| 2016 |
288.9 |
0.111 |
| 2017 |
286.2 |
0.096 |
| 2018 |
282.5 |
0.080 |
| 2019 |
276.9 |
0.064 |
| 2020 |
267.2 |
0.046 |
| 2021 |
246.1 |
0.030 |
| 2022 |
196.1 |
0.022 |
| 2023 |
149.2 |
0.031 |
| 2024 |
127.5 |
0.042 |
| 2025 |
113.6 |
0.048 |
| 2026 |
101.3 |
0.048 |
| 2027 |
88.9 |
0.047 |
| 2028 |
75.9 |
0.046 |
| 2029 |
62.7 |
0.047 |
| 2030 |
50.1 |
0.049 |
|
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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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