20396+0458 KUI 99 AB (OQ Del)
20h 39m 37.71s +04° 58' 19.3" P.A. 111.00 sep 0.3 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 |
2021 |
|
Obs |
162 |
|
Pa first |
313 |
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Pa last |
110.5 |
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P.A. Now (θ) |
124.6° |
|
Sep first |
0.7 |
|
Sep last |
0.333 |
|
Sep. Now (ρ) |
0.533" |
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Mag pri |
8.28 |
|
Mag sec |
9.63 |
|
delta mag (ΔM) |
1.35 |
|
Spectral class |
K5V (yellow-orange) |
|
Pri motion ra |
+874 |
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Sec motion ra |
+874 |
|
Pri motion dec |
+091 |
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Sec motion dec |
+091 |
|
Notes |
N
O
(See Notes, Orbital solution) |
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This double is physical.
20396+0458 SYSTEM COMPONENTS
Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
Show |
|
126068 |
20 39 38 +04 58 19 |
BAG 14 Aa,Ab |
2021 |
27 |
49 |
0.2 |
8.80 |
9.90 |
1.10 |
Y |
|
Show |
OQ Del |
126068 |
20 39 38 +04 58 19 |
KUI 99 AB |
2021 |
162 |
111 |
0.3 |
8.28 |
9.63 |
1.35 |
Y |
<=== |
Triple system
2 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Var name |
OQ Del |
|
Constellation |
Delphinus |
|
SAO |
126068 |
|
HIP |
101955 |
|
Tycho2 |
0519-00866-1 |
|
HD |
196795 |
|
GC |
28771 |
|
GL |
Gl 795A |
|
BD |
BD+04 4510 |
|
Distance |
16.72 |
|
Distance ly |
54.54 |
|
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 |
Notes | n | |
Reference | Tok2017a | |
Equinox | 2000 | |
Last observation | 2016 | |
Grade | 2 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
139.1 |
0.209 |
2001 |
155.4 |
0.091 |
2002 |
265.4 |
0.063 |
2003 |
294.2 |
0.177 |
2004 |
300.1 |
0.296 |
2005 |
302.6 |
0.410 |
2006 |
304.0 |
0.516 |
2007 |
305.0 |
0.608 |
2008 |
305.7 |
0.685 |
2009 |
306.3 |
0.743 |
2010 |
306.9 |
0.779 |
2011 |
307.4 |
0.791 |
2012 |
307.9 |
0.777 |
2013 |
308.4 |
0.737 |
2014 |
309.0 |
0.670 |
2015 |
309.8 |
0.578 |
2016 |
310.9 |
0.464 |
2017 |
312.9 |
0.333 |
2018 |
317.7 |
0.190 |
2019 |
351.7 |
0.050 |
2020 |
111.0 |
0.122 |
2021 |
120.3 |
0.268 |
2022 |
123.1 |
0.407 |
2023 |
124.6 |
0.533 |
2024 |
125.4 |
0.644 |
2025 |
126.1 |
0.738 |
2026 |
126.6 |
0.811 |
2027 |
127.0 |
0.865 |
2028 |
127.4 |
0.898 |
2029 |
127.8 |
0.911 |
2030 |
128.2 |
0.904 |
|
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Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
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Measures: green=micrometric, blue=interferometric, purple=photographic |
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