10227+1521 STT 216 (HD 89906)
10h 22m 43.81s +15° 20' 39.7" P.A. 228.00 sep 2.5 mag 7.38,10.28 Sp G5 dist. 28.77 pc (93.85 l.y.)
| Coord 2000 |
10227+1521 |
|
Discov num |
STT 216 |
|
Comp |
|
|
Coord arcsec 2000 |
10 22 43.81 +15 20 39.7 |
|
| Date first |
1843 |
|
Date last |
2021 |
|
Obs |
180 |
|
| Pa first |
164 |
|
Pa last |
227.6 |
|
P.A. Now (θ) |
226.2° |
|
| Sep first |
1.9 |
|
Sep last |
2.48 |
|
Sep. Now (ρ) |
2.363" |
|
| Mag pri |
7.38 |
|
Mag sec |
10.28 |
|
delta mag (ΔM) |
2.9 |
|
Spectral class |
G5 (yellow) |
|
| Pri motion ra |
-251 |
|
Sec motion ra |
-262 |
|
| Pri motion dec |
-101 |
|
Sec motion dec |
-086 |
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
rPM=0.067 (< 0.3, Physical double)
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 89906 |
|
Constellation |
Leo |
|
SAO |
99091 |
|
HIP |
50829 |
|
| Tycho2 |
1420-01200-1 |
|
Gaia DR2 |
3887696579776144512 |
|
HD |
89906 |
|
GC |
14245 |
|
| ADS |
7744 |
|
BD |
BD+16 2116 |
|
Distance |
28.77 |
|
Distance ly |
93.85 |
|
ORBITAL ELEMENTS
| Period (P) | 314.93y | |
Periastron (T) | 1941.24y | |
Semi-major axis (a) | 1.84a | |
| Eccentricity (e) | 0.544 | |
Inclination (i) | 144.6° | |
Longitude of periastron (ω) | 42.1° | |
| Node (Ω) | 53.3° | |
Notes | n | |
Reference | Sca2009c | |
| Equinox | 2000 | |
Last observation | 2009 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
240.2 |
1.973 |
| 2001 |
239.5 |
1.992 |
| 2002 |
238.9 |
2.011 |
| 2003 |
238.2 |
2.030 |
| 2004 |
237.6 |
2.049 |
| 2005 |
237.0 |
2.067 |
| 2006 |
236.3 |
2.085 |
| 2007 |
235.7 |
2.102 |
| 2008 |
235.1 |
2.119 |
| 2009 |
234.6 |
2.136 |
| 2010 |
234.0 |
2.153 |
| 2011 |
233.4 |
2.169 |
| 2012 |
232.9 |
2.185 |
| 2013 |
232.3 |
2.200 |
| 2014 |
231.8 |
2.216 |
| 2015 |
231.2 |
2.230 |
| 2016 |
230.7 |
2.245 |
| 2017 |
230.2 |
2.259 |
| 2018 |
229.7 |
2.273 |
| 2019 |
229.2 |
2.287 |
| 2020 |
228.7 |
2.301 |
| 2021 |
228.2 |
2.314 |
| 2022 |
227.7 |
2.327 |
| 2023 |
227.2 |
2.339 |
| 2024 |
226.7 |
2.351 |
| 2025 |
226.2 |
2.363 |
| 2026 |
225.7 |
2.375 |
| 2027 |
225.3 |
2.387 |
| 2028 |
224.8 |
2.398 |
| 2029 |
224.4 |
2.409 |
| 2030 |
223.9 |
2.419 |
| 2031 |
223.5 |
2.430 |
| 2032 |
223.0 |
2.440 |
| 2033 |
222.6 |
2.450 |
| 2034 |
222.1 |
2.459 |
| 2035 |
221.7 |
2.469 |
| 2036 |
221.3 |
2.478 |
| 2037 |
220.8 |
2.487 |
| 2038 |
220.4 |
2.495 |
| 2039 |
220.0 |
2.504 |
| 2040 |
219.6 |
2.512 |
| 2041 |
219.1 |
2.520 |
| 2042 |
218.7 |
2.527 |
| 2043 |
218.3 |
2.535 |
| 2044 |
217.9 |
2.542 |
| 2045 |
217.5 |
2.549 |
| 2046 |
217.1 |
2.555 |
| 2047 |
216.7 |
2.562 |
| 2048 |
216.3 |
2.568 |
| 2049 |
215.9 |
2.574 |
| 2050 |
215.5 |
2.580 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
Measures: green=micrometric, blue=interferometric, purple=photographic
|
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