17240-0921 RST 3972 Aa,Ab
17h 23m 57.87s -09° 21' 29.7" P.A. 161.00 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 |
2022 |
|
Obs |
45 |
|
| Pa first |
279 |
|
Pa last |
161 |
|
P.A. Now (θ) |
241.4° (calc) |
|
| Sep first |
0.2 |
|
Sep last |
0.078 |
|
Sep. Now (ρ) |
0.207" (calc) |
|
| 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 |
|
|
| 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 |
|
208770 |
17 23 58 -09 21 30 |
RST 3972 Aa,Ab |
2022 |
45 |
161 |
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
3 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Ophiuchus |
|
SAO |
208770 |
|
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) | 15.28y | ± 0.05 |
Periastron (T) | 2021.269y | ± 0.03 |
Semi-major axis (a) | 0.1473a | ± 0.001 |
| Eccentricity (e) | 0.5726 | ± 0.0025 |
Inclination (i) | 24.6° | ± 1.5 |
Longitude of periastron (ω) | 24.3° | ± 5.7 |
| Node (Ω) | 61.6° | ± 2.4 |
Notes | n | |
Reference | Doc2022e | |
| Equinox | 2000 | |
Last observation | 2022 | |
Grade | 1 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
276.5 |
0.216 |
| 2001 |
285.2 |
0.201 |
| 2002 |
295.7 |
0.180 |
| 2003 |
309.5 |
0.152 |
| 2004 |
330.3 |
0.119 |
| 2005 |
8.2 |
0.085 |
| 2006 |
85.0 |
0.062 |
| 2007 |
168.8 |
0.084 |
| 2008 |
204.5 |
0.127 |
| 2009 |
222.5 |
0.164 |
| 2010 |
234.5 |
0.192 |
| 2011 |
243.8 |
0.211 |
| 2012 |
251.9 |
0.223 |
| 2013 |
259.3 |
0.228 |
| 2014 |
266.6 |
0.227 |
| 2015 |
274.3 |
0.220 |
| 2016 |
282.6 |
0.206 |
| 2017 |
292.5 |
0.186 |
| 2018 |
305.1 |
0.161 |
| 2019 |
323.4 |
0.129 |
| 2020 |
354.8 |
0.094 |
| 2021 |
58.6 |
0.066 |
| 2022 |
151.2 |
0.073 |
| 2023 |
197.3 |
0.115 |
| 2024 |
218.4 |
0.155 |
| 2025 |
231.5 |
0.185 |
| 2026 |
241.4 |
0.207 |
| 2027 |
249.7 |
0.221 |
| 2028 |
257.3 |
0.228 |
| 2029 |
264.6 |
0.228 |
| 2030 |
272.1 |
0.222 |
| 2031 |
280.2 |
0.210 |
| 2032 |
289.5 |
0.193 |
| 2033 |
301.2 |
0.168 |
| 2034 |
317.4 |
0.138 |
| 2035 |
343.9 |
0.104 |
| 2036 |
35.9 |
0.072 |
| 2037 |
128.2 |
0.065 |
| 2038 |
188.3 |
0.103 |
| 2039 |
213.6 |
0.145 |
| 2040 |
228.3 |
0.178 |
| 2041 |
238.8 |
0.201 |
| 2042 |
247.5 |
0.217 |
| 2043 |
255.2 |
0.226 |
| 2044 |
262.5 |
0.229 |
| 2045 |
269.9 |
0.225 |
| 2046 |
277.8 |
0.214 |
| 2047 |
286.7 |
0.198 |
| 2048 |
297.6 |
0.176 |
| 2049 |
312.2 |
0.147 |
| 2050 |
334.8 |
0.114 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
Measures: green=micrometric, blue=interferometric, purple=photographic
|
|
