10544+3840 COU 1746

 
 
10h 54m 26.21s +38° 39' 36.6" P.A. 331.00 sep 0.3 mag 10.70,10.91 Sp K0 dist. 93.2 pc (304.02 l.y.)
 
 
Coord 2000 10544+3840 Discov num COU1746 Comp Coord arcsec 2000 10 54 26.21 +38 39 36.6
Date first 1979 Date last 2017 Obs 21
Pa first 284 Pa last 331.1 P.A. Now (θ) 331.1°
Sep first 0.2 Sep last 0.325 Sep. Now (ρ) 0.325"
Mag pri 10.70 Mag sec 10.91 delta mag (ΔM) 0.21 Spectral class K0 (yellow-orange)
Pri motion ra -106 Sec motion ra
Pri motion dec -077 Sec motion dec
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Ursa Major HIP 53326 Tycho2 3009-00722-1 Gaia DR2 775547780852015104
BD BD+39 2389 Distance 93.2 Distance ly 304.02
 
 
ORBITAL ELEMENTS
 
 
Period (P)58.52y Periastron (T)1972.67y Semi-major axis (a)0.224a
Eccentricity (e)0.845 Inclination (i)19.2° Longitude of periastron (ω)22.2°
Node (Ω)113.2° Notes ReferenceLin2018a
Equinox2000 Last observation2012 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 312.5 0.409
2001 313.4 0.410
2002 314.3 0.410
2003 315.3 0.409
2004 316.2 0.408
2005 317.1 0.406
2006 318.1 0.404
2007 319.1 0.400
2008 320.0 0.396
2009 321.0 0.392
2010 322.1 0.387
2011 323.1 0.381
2012 324.2 0.374
2013 325.4 0.367
2014 326.5 0.358
2015 327.8 0.349
2016 329.1 0.340
2017 330.5 0.329
2018 332.0 0.317
2019 333.6 0.305
2020 335.4 0.291
2021 337.3 0.276
2022 339.5 0.260
2023 341.9 0.243
2024 344.8 0.224
2025 348.2 0.204
2026 352.4 0.182
2027 357.8 0.157
2028 5.4 0.130
2029 17.4 0.100
2030 41.0 0.066


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



 
 


wds10544%2B3840b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic