17584+0428 KUI 84 AB
17h 58m 24.46s +04° 27' 41.8" P.A. 346.00 sep 0.2 mag 10.36,11.09 Sp K8 dist. 43.61 pc (142.26 l.y.)
| Coord 2000 |
17584+0428 |
|
Discov num |
KUI 84 |
|
Comp |
AB |
|
Coord arcsec 2000 |
17 58 24.46 +04 27 41.8 |
|
| Date first |
1934 |
|
Date last |
2021 |
|
Obs |
30 |
|
| Pa first |
356 |
|
Pa last |
345.5 |
|
P.A. Now (θ) |
354.1° |
|
| Sep first |
0.3 |
|
Sep last |
0.24 |
|
Sep. Now (ρ) |
0.255" |
|
| Mag pri |
10.36 |
|
Mag sec |
11.09 |
|
delta mag (ΔM) |
0.73 |
|
Spectral class |
K8 (yellow-orange) |
|
| Pri motion ra |
-051 |
|
Sec motion ra |
|
|
| Pri motion dec |
-057 |
|
Sec motion dec |
|
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
17584+0428 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
|
17 58 24 +04 27 42 |
KUI 84 AB |
2021 |
30 |
346 |
0.2 |
10.36 |
11.09 |
0.73 |
Y |
<=== |
| Show |
|
|
17 58 24 +04 27 42 |
SKF 2215 AC |
2015 |
11 |
320 |
18.0 |
10.36 |
14.70 |
4.34 |
|
|
Triple system
3 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Ophiuchus |
|
HIP |
87991 |
|
Tycho2 |
0425-00802-1 |
|
Gaia DR2 |
4472789731012285824 |
|
| BD |
BD+04 3562 |
|
Distance |
43.61 |
|
Distance ly |
142.26 |
|
ORBITAL ELEMENTS
| Period (P) | 14.717y | ± 0.05 |
Periastron (T) | 2030.899y | ± 0.06 |
Semi-major axis (a) | 0.17a | ± 0.005 |
| Eccentricity (e) | 0.513 | ± 0.02 |
Inclination (i) | 61° | ± 2 |
Longitude of periastron (ω) | 10.8° | ± 2 |
| Node (Ω) | 171.3° | ± 2 |
Notes | n | |
Reference | Doc2021c | |
| Equinox | | |
Last observation | 2019 | |
Grade | 2 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
97.1 |
0.064 |
| 2001 |
156.7 |
0.082 |
| 2002 |
206.0 |
0.064 |
| 2003 |
292.4 |
0.072 |
| 2004 |
323.7 |
0.132 |
| 2005 |
335.6 |
0.184 |
| 2006 |
342.8 |
0.221 |
| 2007 |
348.2 |
0.244 |
| 2008 |
352.9 |
0.255 |
| 2009 |
357.4 |
0.253 |
| 2010 |
2.2 |
0.239 |
| 2011 |
8.0 |
0.214 |
| 2012 |
15.6 |
0.178 |
| 2013 |
28.1 |
0.132 |
| 2014 |
55.1 |
0.083 |
| 2015 |
117.1 |
0.066 |
| 2016 |
168.8 |
0.084 |
| 2017 |
230.0 |
0.055 |
| 2018 |
305.6 |
0.088 |
| 2019 |
328.0 |
0.148 |
| 2020 |
337.9 |
0.196 |
| 2021 |
344.4 |
0.229 |
| 2022 |
349.5 |
0.249 |
| 2023 |
354.1 |
0.255 |
| 2024 |
358.7 |
0.250 |
| 2025 |
3.7 |
0.233 |
| 2026 |
9.9 |
0.205 |
| 2027 |
18.5 |
0.166 |
| 2028 |
33.4 |
0.118 |
| 2029 |
68.9 |
0.073 |
| 2030 |
135.0 |
0.071 |
|
|
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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