17362-1752 YSC 158 Aa,Ab
17h 36m 13.32s -17° 51' 49.0" P.A. 95.00 sep 0.1 mag 8.20,8.80 Sp G0V dist. 147.06 pc (479.71 l.y.)
| Coord 2000 |
17362-1752 |
|
Discov num |
YSC 158 |
|
Comp |
Aa,Ab |
|
Coord arcsec 2000 |
17 36 13.32 -17 51 49.0 |
|
| Date first |
2008 |
|
Date last |
2021 |
|
Obs |
15 |
|
| Pa first |
96 |
|
Pa last |
94.9 |
|
P.A. Now (θ) |
94.9° |
|
| Sep first |
0.1 |
|
Sep last |
0.081 |
|
Sep. Now (ρ) |
0.081" |
|
| Mag pri |
8.20 |
|
Mag sec |
8.80 |
|
delta mag (ΔM) |
0.6 |
|
Spectral class |
G0V (yellow) |
|
| Pri motion ra |
-045 |
|
Sec motion ra |
|
|
| Pri motion dec |
-086 |
|
Sec motion dec |
|
|
| Notes |
O
(Orbital solution) |
|
This double is physical.
17362-1752 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
160678 |
17 36 13 -17 51 49 |
YSC 158 Aa,Ab |
2021 |
15 |
95 |
0.1 |
8.20 |
8.80 |
0.60 |
Y |
<=== |
| Show |
HD 159589 |
160678 |
17 36 13 -17 51 49 |
HDS 2485 AB |
2021 |
16 |
93 |
0.8 |
7.71 |
10.11 |
2.40 |
|
|
Triple system
2 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Ophiuchus |
|
SAO |
160678 |
|
HIP |
86142 |
|
Tycho2 |
6252-02245-1 |
|
| Gaia DR2 |
4123538211869148160 |
|
HD |
159589 |
|
BD |
BD-17 4857 |
|
Distance |
147.06 |
|
| Distance ly |
479.71 |
|
ORBITAL ELEMENTS
| Period (P) | 12.55y | |
Periastron (T) | 2013.528y | |
Semi-major axis (a) | 0.072a | |
| Eccentricity (e) | 0.119 | |
Inclination (i) | 70.8° | |
Longitude of periastron (ω) | 132.7° | |
| Node (Ω) | 102.8° | |
Notes | n | |
Reference | Doc2020d | |
| Equinox | 2000 | |
Last observation | 2019 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
214.1 |
0.023 |
| 2001 |
263.7 |
0.046 |
| 2002 |
279.4 |
0.064 |
| 2003 |
290.8 |
0.063 |
| 2004 |
306.4 |
0.048 |
| 2005 |
343.6 |
0.028 |
| 2006 |
49.7 |
0.032 |
| 2007 |
79.2 |
0.053 |
| 2008 |
91.9 |
0.070 |
| 2009 |
100.6 |
0.078 |
| 2010 |
109.1 |
0.071 |
| 2011 |
122.0 |
0.051 |
| 2012 |
160.7 |
0.025 |
| 2013 |
245.6 |
0.032 |
| 2014 |
272.0 |
0.056 |
| 2015 |
284.5 |
0.066 |
| 2016 |
296.7 |
0.058 |
| 2017 |
318.4 |
0.038 |
| 2018 |
15.0 |
0.026 |
| 2019 |
66.8 |
0.041 |
| 2020 |
85.9 |
0.062 |
| 2021 |
96.0 |
0.075 |
| 2022 |
104.3 |
0.076 |
| 2023 |
113.9 |
0.064 |
| 2024 |
132.9 |
0.039 |
| 2025 |
204.2 |
0.022 |
| 2026 |
261.3 |
0.044 |
| 2027 |
278.2 |
0.063 |
| 2028 |
289.6 |
0.064 |
| 2029 |
304.3 |
0.050 |
| 2030 |
337.8 |
0.030 |
|
|
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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