08554+7048 STF 1280 AB (HD 75632)

 
 
08h 55m 24.82s +70° 47' 39.2" P.A. 359.00 sep 3.8 mag 8.81,9.10 Sp M1V+M1V
 
 
Coord 2000 08554+7048 Discov num STF1280 Comp AB Coord arcsec 2000 08 55 24.82 +70 47 39.2
Date first 1823 Date last 2022 Obs 261
Pa first 31 Pa last 358.8 P.A. Now (θ) 359.1°
Sep first 8.8 Sep last 3.77 Sep. Now (ρ) 3.878"
Mag pri 8.81 Mag sec 9.10 delta mag (ΔM) 0.29 Spectral class M1V+M1V (red/red)
Pri motion ra -133 Sec motion ra -135
Pri motion dec -031 Sec motion dec -042
Notes N O P (See Notes, Orbital solution, 100-year proper motion)
rPM=0.079 (< 0.3, Physical double)
This double is physical.
 
 
08554+7048 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show HD 75632 6682 08 55 25 +70 47 39 STF 1280 AB 2022 261 359 3.8 8.81 9.10 0.29 Y <===
Show 6682 08 55 25 +70 47 39 STF 1280 AC 2015 5 88 398.4 8.81 12.40 3.59
Show 08 55 25 +70 47 39 STF 1280 BC 2015 5 88 398.5 9.10 12.40 3.30
Triple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 75632 Constellation Ursa Major SAO 6682 HIP 43820
Tycho2 4378-02162-1 HD 75632 GC 12268 ADS 7067
 
 
ORBITAL ELEMENTS
 
 
Period (P)688.512y± 75.5535 Periastron (T)1994.3455y± 0.0642 Semi-major axis (a)7.18257a± 0.53293
Eccentricity (e)0.89905± 0.00827 Inclination (i)60.483°± 0.378 Longitude of periastron (ω)221.491°± 0.389
Node (Ω)0.372°± 0.261 Notesn ReferenceIzm2019
Equinox Last observation2015 Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 325.8 0.890
2001 331.9 1.067
2002 336.3 1.240
2003 339.6 1.409
2004 342.3 1.572
2005 344.4 1.728
2006 346.2 1.880
2007 347.7 2.026
2008 349.1 2.167
2009 350.2 2.304
2010 351.3 2.437
2011 352.2 2.565
2012 353.0 2.690
2013 353.8 2.812
2014 354.5 2.930
2015 355.2 3.046
2016 355.8 3.158
2017 356.3 3.268
2018 356.9 3.375
2019 357.3 3.480
2020 357.8 3.583
2021 358.3 3.683
2022 358.7 3.782
2023 359.1 3.878
2024 359.4 3.973
2025 359.8 4.066
2026 0.1 4.157
2027 0.5 4.246
2028 0.8 4.334
2029 1.1 4.420
2030 1.4 4.505


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



 
 


wds08554%2B7048b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic