13007+5622 BU 1082 (78 UMa)

 
 
13h 00m 43.59s +56° 21' 58.8" P.A. 141.00 sep 0.7 mag 5.02,7.88 Sp F2V dist. 25.45 pc (83.02 l.y.)
 
 
Coord 2000 13007+5622 Discov num BU 1082 Comp Coord arcsec 2000 13 00 43.59 +56 21 58.8
Date first 1889 Date last 2019 Obs 150
Pa first 73 Pa last 140.7 P.A. Now (θ) 182.8°
Sep first 1.5 Sep last 0.66 Sep. Now (ρ) 0.521"
Mag pri 5.02 Mag sec 7.88 delta mag (ΔM) 2.86 Spectral class F2V (yellow-white)
Pri motion ra +107 Sec motion ra
Pri motion dec -011 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name 78 UMa Var name NSV6058 UMa Constellation Ursa Major SAO 28601
HIP 63503 Tycho2 3845-01189-1 Gaia DR2 1576850723937017216 HD 113139
HR 4931 GC 17664 ADS 8739 BD BD+57 1408
Flamsteed 78 Ursae Majoris Flamsteed name 78 UMa Distance 25.45 Distance ly 83.02
 
 
ORBITAL ELEMENTS
 
 
Period (P)104.9y± 0.6 Periastron (T)1921.224y± 0.403 Semi-major axis (a)1.208a± 0.01
Eccentricity (e)0.388± 0.009 Inclination (i)46.9°± 0.9 Longitude of periastron (ω)119.2°± 1.5
Node (Ω)88°± 1.1 Notesn ReferenceDru2014
Equinox Last observation2012 Grade2(1=Definitive, 9=Indet.)
label theta rho
2000 80.2 1.358
2001 81.9 1.340
2002 83.7 1.320
2003 85.6 1.297
2004 87.5 1.273
2005 89.5 1.246
2006 91.6 1.216
2007 93.7 1.184
2008 96.1 1.149
2009 98.5 1.111
2010 101.2 1.071
2011 104.0 1.029
2012 107.2 0.983
2013 110.6 0.936
2014 114.4 0.886
2015 118.6 0.835
2016 123.5 0.783
2017 129.0 0.731
2018 135.3 0.681
2019 142.6 0.633
2020 151.1 0.591
2021 160.7 0.556
2022 171.4 0.532
2023 182.8 0.521
2024 194.5 0.523
2025 205.7 0.539
2026 216.1 0.566
2027 225.4 0.600
2028 233.6 0.640
2029 240.8 0.681
2030 247.3 0.722


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



 
 


wds13007%2B5622b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic