09551+6854 STF 1386 AB (HD 85458)

 
 
09h 55m 04.02s +68° 54' 06.1" P.A. 111.00 sep 2.1 mag 9.30,9.34 Sp F5 dist. 168.92 pc (551.02 l.y.)
 
 
Coord 2000 09551+6854 Discov num STF1386 Comp AB Coord arcsec 2000 09 55 04.02 +68 54 06.1
Date first 1831 Date last 2020 Obs 58
Pa first 122 Pa last 111.1 P.A. Now (θ) 111.1°
Sep first 1.5 Sep last 2.12 Sep. Now (ρ) 2.12"
Mag pri 9.30 Mag sec 9.34 delta mag (ΔM) 0.04 Spectral class F5 (yellow-white)
Pri motion ra -006 Sec motion ra -006
Pri motion dec -001 Sec motion dec -001
Notes O W (Orbital solution, )
This double is physical.
 
 
09551+6854 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show HD 85458 15020 09 55 04 +68 54 06 STF 1386 AB 2020 58 111 2.1 9.30 9.34 0.04 Y <===
Show 15020 09 55 04 +68 54 06 STF 1386 AB,CD 2003 10 353 137.7 9.30 10.67 1.37
Show 09 55 03 +68 56 22 STF 1387 CD 2020 42 273 8.9 10.73 10.67 0.06
Quadruple system
6 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 85458 Constellation Ursa Major SAO 15020 HIP 48639
Tycho2 4383-00848-2 Gaia DR2 1070467070352960640 HD 85458 GC 13606
BD BD+69 542 Distance 168.92 Distance ly 551.02
 
 
ORBITAL ELEMENTS
 
 
Period (P)2301.5886y± 1050.8306 Periastron (T)2178.5269y± 435.2889 Semi-major axis (a)4.61934a± 2.5666
Eccentricity (e)0.79276± 0.1685 Inclination (i)92.517°± 2.781 Longitude of periastron (ω)76.941°± 17.376
Node (Ω)108.314°± 4.927 Notes ReferenceIzm2019
Equinox Last observation2015 Grade5(1=Definitive, 9=Indet.)
label theta rho
2000 111.5 2.109
2001 111.5 2.110
2002 111.5 2.110
2003 111.5 2.110
2004 111.4 2.110
2005 111.4 2.110
2006 111.4 2.110
2007 111.4 2.110
2008 111.4 2.110
2009 111.3 2.110
2010 111.3 2.110
2011 111.3 2.110
2012 111.3 2.110
2013 111.3 2.109
2014 111.2 2.109
2015 111.2 2.109
2016 111.2 2.108
2017 111.2 2.108
2018 111.2 2.108
2019 111.1 2.107
2020 111.1 2.106
2021 111.1 2.106
2022 111.1 2.105
2023 111.1 2.104
2024 111.0 2.104
2025 111.0 2.103
2026 111.0 2.102
2027 111.0 2.101
2028 111.0 2.100
2029 110.9 2.099
2030 110.9 2.098


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


 
  


wds09551%2B6854a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic