15226+7254 HDS 2163 (HD 137825)

 
 
15h 22m 35.11s +72° 54' 15.2" P.A. 177.00 sep 0.2 mag 9.22,10.62 Sp G5 dist. 122.1 pc (398.29 l.y.)
 
 
Coord 2000 15226+7254 Discov num HDS2163 Comp Coord arcsec 2000 15 22 35.11 +72 54 15.2
Date first 1991 Date last 2014 Obs 7
Pa first 12 Pa last 177.4 P.A. Now (θ) 177.4°
Sep first 0.1 Sep last 0.226 Sep. Now (ρ) 0.226"
Mag pri 9.22 Mag sec 10.62 delta mag (ΔM) 1.4 Spectral class G5 (yellow)
Pri motion ra -038 Sec motion ra
Pri motion dec +050 Sec motion dec
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 137825 Constellation Ursa Minor SAO 8232 HIP 75248
Tycho2 4417-01473-1 Gaia DR2 1697008412636753664 HD 137825 BD BD+73 673
Distance 122.1 Distance ly 398.29
 
 
ORBITAL ELEMENTS
 
 
Period (P)130.91y Periastron (T)1993.53y Semi-major axis (a)0.261a
Eccentricity (e)0.483 Inclination (i)66° Longitude of periastron (ω)39.2°
Node (Ω)3.7° Notes ReferenceCve2015b
Equinox2000 Last observation2010 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 99.0 0.063
2001 114.4 0.069
2002 126.8 0.078
2003 136.3 0.090
2004 143.6 0.102
2005 149.3 0.115
2006 153.7 0.129
2007 157.4 0.142
2008 160.4 0.155
2009 163.0 0.168
2010 165.2 0.180
2011 167.1 0.192
2012 168.8 0.203
2013 170.4 0.214
2014 171.7 0.224
2015 173.0 0.234
2016 174.2 0.244
2017 175.3 0.253
2018 176.3 0.261
2019 177.2 0.269
2020 178.1 0.276
2021 179.0 0.284
2022 179.8 0.290
2023 180.6 0.297
2024 181.3 0.302
2025 182.0 0.308
2026 182.7 0.313
2027 183.4 0.318
2028 184.0 0.322
2029 184.7 0.326
2030 185.3 0.330


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


 
  


wds15226%2B7254a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic