14390+6417 KON 1 (EK Dra)

 
 
14h 39m 00.21s +64° 17' 29.9" P.A. 170.00 sep 0.8 mag 6.00,8.90 Sp G0V+M2 dist. 34.13 pc (111.33 l.y.)
 
 
Coord 2000 14390+6417 Discov num KON   1 Comp Coord arcsec 2000 14 39 00.21 +64 17 29.9
Date first 1991 Date last 2009 Obs 16
Pa first 174 Pa last 170 P.A. Now (θ) 170°
Sep first 0.3 Sep last 0.764 Sep. Now (ρ) 0.764"
Mag pri 6.00 Mag sec 8.90 delta mag (ΔM) 2.9 Spectral class G0V+M2 (yellow/red)
Pri motion ra -139 Sec motion ra
Pri motion dec -012 Sec motion dec
Notes N O K (See Notes, Orbital solution, K-band or other infrared magnitudes)
Visually invisible, K-band or other infrared star : Summary line gives K-band or other infrared (>1 micron) magnitudes
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Var name EK Dra Constellation Draco HIP 71631 Tycho2 4176-00540-1
Gaia DR2 1668690628102524672 HD 129333 GL Gl 559.1 BD BD+64 1017
Distance 34.13 Distance ly 111.33
 
 
ORBITAL ELEMENTS
 
 
Period (P)45y± 5 Periastron (T)46960d (1987.448y)± 30 Semi-major axis (a)0.412a± 0.015
Eccentricity (e)0.82± 0.03 Inclination (i)95°± 3 Longitude of periastron (ω)180°± 10
Node (Ω)172°± 1 Notesn ReferenceKng2005
Equinox Last observation2002 Grade5(1=Definitive, 9=Indet.)
label theta rho
2000 173.4 0.625
2001 173.2 0.650
2002 173.0 0.671
2003 172.9 0.690
2004 172.7 0.706
2005 172.6 0.720
2006 172.5 0.731
2007 172.4 0.739
2008 172.2 0.745
2009 172.1 0.749
2010 172.0 0.750
2011 171.9 0.748
2012 171.8 0.745
2013 171.6 0.739
2014 171.5 0.730
2015 171.4 0.719
2016 171.2 0.705
2017 171.1 0.688
2018 171.0 0.669
2019 170.8 0.647
2020 170.6 0.622
2021 170.4 0.594
2022 170.2 0.562
2023 170.0 0.527
2024 169.8 0.488
2025 169.4 0.445
2026 169.1 0.396
2027 168.6 0.343
2028 167.9 0.282
2029 166.7 0.214
2030 164.4 0.136


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



 
 


wds14390%2B6417a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic