20396+0458 KUI  99AB (OQ Del)

 
 
20h 39m 37.71s +04 58' 19.3" P.A. 313.6 sep 0.4 mag 8.28,9.63 Sp K5V dist. 16.72 pc (54.54 l.y.)
 
 
Coord 2000
20396+0458
Discov num
KUI  99
Comp
AB
Coord arcsec 2000
20 39 37.71 +04 58 19.3
Date first
1934
Date last
2016
Obs
146
Pa first
313
Pa last
322
P.A. Now (θ)
313.6°
Sep first
0.7
Sep last
0.4
Sep. Now (ρ)
0.4"
Mag pri
8.28
Mag sec
9.63
delta mag (ΔM)
1.35
Spectral class
K5V (yellow-orange)
Pri motion ra
+874
Sec motion ra
+874
Pri motion dec
+091
Sec motion dec
+091
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
20396+0458 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 20396+0458 BAG 14 Aa,Ab 1998 2016 20 52 0.2 8.80 9.90 1.10 Y
Show OQ Del 20396+0458 KUI 99 AB 1934 2016 146 314 0.4 8.28 9.63 1.35 Y <===
Show 20396+0458 BAG 14 Ab,B 1999 2004 2 120 0.5 9.90 9.63 0.27
Triple system
2 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
322.3
Precise sep
0.401
Var name
OQ Del
Constellation
Delphinus
HIP
101955
Tycho2
0519-00866-1
HD
196795
GL
Gl 795A
BD
BD+04 4510
Distance
16.72
Distance ly
54.54
last precise pa
322.3
last precise sep
0.401
 
 
ORBITAL ELEMENTS
 
 
Period (P)38.679y± 0.031 Periastron (T)2016.11y± 1.32 Semi-major axis (a)0.855a± 0.11
Eccentricity (e)0.118± 0.016 Inclination (i)87.4°± 0.05 Longitude of periastron (ω)233.4°± 0.5
Node (Ω)127.6°± 0.08 Note Grade2(1=Definitive, 9=Indet.)
Equinox2000 Last observation2016
label rho theta
2000 0.209 139.1
2001 0.091 155.4
2002 0.063 265.4
2003 0.177 294.2
2004 0.296 300.1
2005 0.410 302.6
2006 0.516 304.0
2007 0.608 305.0
2008 0.685 305.7
2009 0.743 306.3
2010 0.779 306.9
2011 0.791 307.4
2012 0.777 307.9
2013 0.737 308.4
2014 0.670 309.0
2015 0.578 309.8
2016 0.464 310.9
2017 0.333 312.9
2018 0.190 317.7
2019 0.050 351.7
2020 0.122 111.0
2021 0.268 120.3
2022 0.407 123.1
2023 0.533 124.6
2024 0.644 125.4
2025 0.738 126.1
2026 0.811 126.6
2027 0.865 127.0
2028 0.898 127.4
2029 0.911 127.8
2030 0.904 128.2

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

grafico orbita





wds20396%2B0458d.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20396+0458 KUI 99 AB 2007 137 304 0.6 8.28 9.63 K5V NOD 203937.20+045818.7
20396+0458 KUI 99 AB 2008 140 311 0.7 8.28 9.63 K5V NOD 203937.20+045818.7
20396+0458 KUI 99 AB 2014 142 312 0.5 8.28 9.63 K5V NO 203937.20+045818.7
20396+0458 KUI 99 AB 2015 144 307 0.5 8.28 9.63 K5V NO 203937.20+045818.7
20396+0458 KUI 99 AB 2016 146 322 0.4 8.28 9.63 K5V NO 203937.71+045819.3

If you need more information about this double, apply for a data request form to the WDS.