14390+6417 KON   1 (EK Dra)

 
 
14H 39M 00.21S +64 17' 29.9" P.A. 171 SEP 0.67 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)
171°
Sep first
0.3
Sep last
0.8
Sep. Now (ρ)
0.67"
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)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Var name
EK Dra
Constellation
Draco
SAO
16453
HIP
71631
Tycho2
4176-00540-1
HD
129333
GL
Gl 559.1
BD
BD+64 1017
Distance
34.13
Distance ly
111.33
last precise pa
170
last precise sep
0.764
 
 
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 Note Grade5(1=Definitive, 9=Indet.)
Equinox Last observation2002
label rho theta
2000 0.625 173.4
2001 0.650 173.2
2002 0.671 173.0
2003 0.690 172.9
2004 0.706 172.7
2005 0.720 172.6
2006 0.731 172.5
2007 0.739 172.4
2008 0.745 172.2
2009 0.749 172.1
2010 0.750 172.0
2011 0.748 171.9
2012 0.745 171.8
2013 0.739 171.6
2014 0.730 171.5
2015 0.719 171.4
2016 0.705 171.2
2017 0.688 171.1
2018 0.669 171.0
2019 0.647 170.8
2020 0.622 170.6
2021 0.594 170.4
2022 0.562 170.2
2023 0.527 170.0
2024 0.488 169.8
2025 0.445 169.4
2026 0.396 169.1
2027 0.343 168.6
2028 0.282 167.9
2029 0.214 166.7
2030 0.136 164.4

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

grafico orbita





grafico misure orbit6
Measures: green=micrometric, blue=interferometric, purple=photographic