09006+4147 KUI 37 AB

09h 00m 38.42s +41° 46' 57.6" P.A. 144.00 sep 0.5 mag 4.18,6.48 Sp F3V+K0V dist. 16.07 pc (52.42 l.y.)

Coord 2000 09006+4147 Discov num KUI  37 Comp AB Coord arcsec 2000 09 00 38.42 +41 46 57.6
Date first 1935 Date last 2017 Obs 270
Pa first 37 Pa last 143.7 P.A. Now (θ) 31.5°
Sep first 0.6 Sep last 0.452 Sep. Now (ρ) 0.7"
Mag pri 4.18 Mag sec 6.48 delta mag (ΔM) 2.3 Spectral class F3V+K0V (yellow-white/yellow-orange)
Pri motion ra -382 Sec motion ra
Pri motion dec -270 Sec motion dec
Notes N O (See Notes, Orbital solution)




This double is physical.



09006+4147 SYSTEM COMPONENTS

Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 42642 09 00 38 +41 46 58 KUI 37 AB 2017 270 144 0.5 4.18 6.48 2.30 Y <===
Show 10 UMa 42642 09 00 38 +41 46 58 STT 566 AB,C 2004 17 184 99.7 4.03 10.36 6.33
Show 42642 09 00 38 +41 46 58 BUP 122 AB,D 2013 9 104 173.0 4.03 12.08 8.05
Show 42642 09 00 38 +41 46 58 STT 566 AB,E 2012 10 101 260.4 4.03 11.19 7.16


Quintuple system
6 estimated visually detectable stars in this system



OTHER CATALOGS AND DESIGNATIONS

Constellation Lynx SAO 42642 HIP 44248 Tycho2 2986-01978-1
HD 76943 HR 3579 GC 12434 GL Gl 332A
BD BD+42 1956 Flamsteed 10 Ursae Majoris Flamsteed name 10 UMa FK5 339
Distance 16.07 Distance ly 52.42


Bayer or Flamsteed indentifiers not always match the correct constellation because of procession and proper motion of the star. (UMa vs Lyn)





ORBITAL ELEMENTS

Period (P)7961d (21.8y)± 1.8 Periastron (T)49262.6m (1993.754y)± 9.1 Semi-major axis (a)0.64566a± 0.00065
Eccentricity (e)0.15075± 0.00084 Inclination (i)131.366°± 0.099 Longitude of periastron (ω)32.3°± 0.44
Node (Ω)203.74°± 0.1 Notesn ReferenceMut2010b
Equinox2000 Last observation2008 Grade1(1=Definitive, 9=Indet.)

label theta rho
2000 43.6 0.635
2001 33.4 0.691
2002 24.4 0.722
2003 15.9 0.726
2004 7.2 0.706
2005 357.6 0.664
2006 346.5 0.608
2007 332.9 0.545
2008 316.0 0.489
2009 295.6 0.455
2010 273.5 0.454
2011 252.8 0.482
2012 234.9 0.523
2013 219.5 0.555
2014 205.2 0.561
2015 190.3 0.532
2016 172.6 0.474
2017 149.4 0.411
2018 120.2 0.384
2019 91.4 0.417
2020 69.2 0.491
2021 53.3 0.576
2022 41.3 0.649
2023 31.5 0.700
2024 22.7 0.725
2025 14.2 0.724
2026 5.3 0.699
2027 355.5 0.654
2028 344.0 0.595
2029 329.8 0.533
2030 312.1 0.480


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



 
 


wds09006%2B4147a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic