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 |
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Discov num |
STT 216 |
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Comp |
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Coord arcsec 2000 |
10 22 43.81 +15 20 39.7 |
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Date first |
1843 |
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Date last |
2021 |
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Obs |
179 |
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Pa first |
164 |
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Pa last |
227.6 |
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P.A. Now (θ) |
227.2° |
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Sep first |
1.9 |
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Sep last |
2.48 |
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Sep. Now (ρ) |
2.339" |
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Mag pri |
7.38 |
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Mag sec |
10.28 |
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delta mag (ΔM) |
2.9 |
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Spectral class |
G5 (yellow) |
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Pri motion ra |
-251 |
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Sec motion ra |
-262 |
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Pri motion dec |
-101 |
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Sec motion dec |
-086 |
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Notes |
N
O
(See Notes, Orbital solution) |
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rPM=0.067 (< 0.3, Physical double)
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
Name |
HD 89906 |
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Constellation |
Leo |
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SAO |
99091 |
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HIP |
50829 |
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Tycho2 |
1420-01200-1 |
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Gaia DR2 |
3887696579776144512 |
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HD |
89906 |
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GC |
14245 |
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ADS |
7744 |
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GL |
NN 3596 |
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BD |
BD+16 2116 |
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Distance |
28.77 |
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Distance ly |
93.85 |
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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 |
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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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