09144+5241 STF 1321 AB (HD 79210)

 
 
09h 14m 22.79s +52° 41' 11.8" P.A. 99.00 sep 16.9 mag 7.79,7.88 Sp K7V+M0V dist. 5.81 pc (18.95 l.y.)
 
 
Coord 2000 09144+5241 Discov num STF1321 Comp AB Coord arcsec 2000 09 14 22.79 +52 41 11.8
Date first 1821 Date last 2019 Obs 479
Pa first 44 Pa last 99.1 P.A. Now (θ) 99.1°
Sep first 21.1 Sep last 16.902 Sep. Now (ρ) 16.902"
Mag pri 7.79 Mag sec 7.88 delta mag (ΔM) 0.09 Spectral class K7V+M0V (yellow-orange/red)
Pri motion ra -155 Sec motion ra -157
Pri motion dec -057 Sec motion dec -066
Notes N O P (See Notes, Orbital solution, 100-year proper motion)
rPM=0.054 (< 0.3, Physical double)
This double is physical.
 
 
09144+5241 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show HD 79210 27178 09 14 23 +52 41 12 STF 1321 AB 2019 479 99 16.9 7.79 7.88 0.09 Y <===
Show 09 14 23 +52 41 12 STF 1321 AC 2010 4 64 145.7 7.79 14.53 6.74
Show 09 14 23 +52 41 12 STF 1321 AD 2015 8 129 136.4 7.79 11.89 4.10
Quadruple system
4 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 79210 Constellation Ursa Major SAO 27178 HIP 45343
Tycho2 3806-01814-1 HD 79210 GC 12727 ADS 7251
GL Gl 338A BD BD+53 1320 Distance 5.81 Distance ly 18.95
 
 
ORBITAL ELEMENTS
 
 
Period (P)1986.3y± 246.4 Periastron (T)1937.2y± 23.2 Semi-major axis (a)25.77a± 0.07
Eccentricity (e)0.241± 0.062 Inclination (i)38.3°± 1.8 Longitude of periastron (ω)32.1°± 6.6
Node (Ω)48.7°± 3.1 Notesn ReferencePkO2020
Equinox Last observation Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 92.9 17.315
2001 93.2 17.299
2002 93.6 17.282
2003 93.9 17.266
2004 94.2 17.251
2005 94.5 17.235
2006 94.8 17.219
2007 95.1 17.203
2008 95.4 17.188
2009 95.7 17.173
2010 96.0 17.158
2011 96.3 17.143
2012 96.7 17.128
2013 97.0 17.113
2014 97.3 17.098
2015 97.6 17.084
2016 97.9 17.069
2017 98.2 17.055
2018 98.5 17.041
2019 98.9 17.027
2020 99.2 17.013
2021 99.5 17.000
2022 99.8 16.986
2023 100.1 16.973
2024 100.4 16.960
2025 100.8 16.947
2026 101.1 16.934
2027 101.4 16.921
2028 101.7 16.909
2029 102.0 16.896
2030 102.4 16.884


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



 
 


wds09144%2B5241g.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic