17240-0921 RST 3972 Aa,Ab
17h 23m 57.87s -09° 21' 29.7" P.A. 114.00 sep 0.1 mag 8.50,8.70 Sp G0 dist. 58.72 pc (191.54 l.y.)
| Coord 2000 |
17240-0921 |
|
Discov num |
RST3972 |
|
Comp |
Aa,Ab |
|
Coord arcsec 2000 |
17 23 57.87 -09 21 29.7 |
|
| Date first |
1938 |
|
Date last |
2021 |
|
Obs |
44 |
|
| Pa first |
279 |
|
Pa last |
114.2 |
|
P.A. Now (θ) |
197.1° |
|
| Sep first |
0.2 |
|
Sep last |
0.06 |
|
Sep. Now (ρ) |
0.113" |
|
| Mag pri |
8.50 |
|
Mag sec |
8.70 |
|
delta mag (ΔM) |
0.2 |
|
Spectral class |
G0 (yellow) |
|
| Pri motion ra |
-021 |
|
Sec motion ra |
|
|
| Pri motion dec |
-012 |
|
Sec motion dec |
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| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
17240-0921 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
141647 |
17 23 58 -09 21 30 |
RST 3972 Aa,Ab |
2021 |
44 |
114 |
0.1 |
8.50 |
8.70 |
0.20 |
Y |
<=== |
| Show |
|
141647 |
17 23 58 -09 21 30 |
TOK 179 AB |
2015 |
8 |
298 |
18.9 |
7.84 |
15.92 |
8.08 |
|
|
Triple system
2 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Ophiuchus |
|
SAO |
141647 |
|
HIP |
85141 |
|
Tycho2 |
5658-00307-1 |
|
| Gaia DR2 |
4167212158051410304 |
|
HD |
157498 |
|
BD |
BD-09 4546 |
|
Distance |
58.72 |
|
| Distance ly |
191.54 |
|
ORBITAL ELEMENTS
| Period (P) | 15.262y | ± 0.01 |
Periastron (T) | 2006.01y | ± 0.03 |
Semi-major axis (a) | 0.1465a | ± 0.0012 |
| Eccentricity (e) | 0.57 | ± 0.004 |
Inclination (i) | 25.5° | ± 1.8 |
Longitude of periastron (ω) | 16.8° | ± 3.9 |
| Node (Ω) | 69.2° | ± 3.5 |
Notes | n | |
Reference | Tok2020e | |
| Equinox | | |
Last observation | | |
Grade | 2 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
276.6 |
0.217 |
| 2001 |
285.1 |
0.202 |
| 2002 |
295.3 |
0.181 |
| 2003 |
308.8 |
0.153 |
| 2004 |
329.4 |
0.119 |
| 2005 |
7.4 |
0.084 |
| 2006 |
83.5 |
0.063 |
| 2007 |
166.7 |
0.081 |
| 2008 |
204.1 |
0.124 |
| 2009 |
222.8 |
0.161 |
| 2010 |
235.0 |
0.189 |
| 2011 |
244.4 |
0.209 |
| 2012 |
252.4 |
0.222 |
| 2013 |
259.8 |
0.228 |
| 2014 |
267.0 |
0.227 |
| 2015 |
274.5 |
0.220 |
| 2016 |
282.7 |
0.207 |
| 2017 |
292.4 |
0.187 |
| 2018 |
304.8 |
0.161 |
| 2019 |
322.9 |
0.128 |
| 2020 |
354.7 |
0.092 |
| 2021 |
59.3 |
0.066 |
| 2022 |
149.8 |
0.072 |
| 2023 |
197.1 |
0.113 |
| 2024 |
218.8 |
0.152 |
| 2025 |
232.2 |
0.183 |
| 2026 |
242.1 |
0.205 |
| 2027 |
250.4 |
0.219 |
| 2028 |
257.9 |
0.227 |
| 2029 |
265.1 |
0.228 |
| 2030 |
272.5 |
0.223 |
|
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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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