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 179
Pa first 164 Pa last 227.6 P.A. Now (θ) 227.2°
Sep first 1.9 Sep last 2.48 Sep. Now (ρ) 2.339"
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 GL NN 3596 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° Notesn ReferenceSca2009c
Equinox2000 Last observation2009 Grade3(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


 
grafico orbita
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.



 
 


wds10227%2B1521a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic