18520-5418 TOK 325 Aa,Ab
18h 52m 01.95s -54° 18' 07.0" P.A. 242.00 sep 0.1 mag 8.61,11.50 Sp G3V dist. 51.28 pc (167.28 l.y.)
| Coord 2000 |
18520-5418 |
|
Discov num |
TOK 325 |
|
Comp |
Aa,Ab |
|
Coord arcsec 2000 |
18 52 01.95 -54 18 07.0 |
|
| Date first |
2012 |
|
Date last |
2021 |
|
Obs |
18 |
|
| Pa first |
271 |
|
Pa last |
242 |
|
P.A. Now (θ) |
264.7° |
|
| Sep first |
0.1 |
|
Sep last |
0.097 |
|
Sep. Now (ρ) |
0.119" |
|
| Mag pri |
8.61 |
|
Mag sec |
11.50 |
|
delta mag (ΔM) |
2.89 |
|
Spectral class |
G3V (yellow) |
|
| Pri motion ra |
+060 |
|
Sec motion ra |
|
|
| Pri motion dec |
-042 |
|
Sec motion dec |
|
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
18520-5418 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
245762 |
18 52 02 -54 18 07 |
TOK 325 Aa,Ab |
2021 |
18 |
242 |
0.1 |
8.61 |
11.50 |
2.89 |
Y |
<=== |
| Show |
HD 174122 |
245762 |
18 52 02 -54 18 07 |
TOK 325 AB |
2015 |
8 |
32 |
146.0 |
8.61 |
11.42 |
2.81 |
|
|
Triple system
2 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Telescopium |
|
SAO |
245762 |
|
HIP |
92592 |
|
Tycho2 |
8758-02778-1 |
|
| Gaia DR2 |
6650457382678224640 |
|
HD |
174122 |
|
CP |
CP-54 9114 |
|
Distance |
51.28 |
|
| Distance ly |
167.28 |
|
ORBITAL ELEMENTS
| Period (P) | 11.25y | ± 0.32 |
Periastron (T) | 2017.44y | ± 0.11 |
Semi-major axis (a) | 0.104a | ± 0.002 |
| Eccentricity (e) | 0.253 | ± 0.02 |
Inclination (i) | 50.5° | ± 1.8 |
Longitude of periastron (ω) | 328.7° | ± 4.3 |
| Node (Ω) | 106.8° | ± 2.7 |
Notes | n | |
Reference | Tok2021f | |
| Equinox | | |
Last observation | 2021 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
256.6 |
0.111 |
| 2001 |
271.9 |
0.124 |
| 2002 |
285.4 |
0.125 |
| 2003 |
300.5 |
0.111 |
| 2004 |
323.4 |
0.082 |
| 2005 |
13.0 |
0.055 |
| 2006 |
77.2 |
0.067 |
| 2007 |
114.5 |
0.081 |
| 2008 |
148.9 |
0.074 |
| 2009 |
191.3 |
0.070 |
| 2010 |
228.2 |
0.085 |
| 2011 |
252.0 |
0.106 |
| 2012 |
268.4 |
0.122 |
| 2013 |
282.0 |
0.126 |
| 2014 |
296.3 |
0.116 |
| 2015 |
316.2 |
0.090 |
| 2016 |
356.7 |
0.060 |
| 2017 |
64.1 |
0.061 |
| 2018 |
106.3 |
0.080 |
| 2019 |
139.6 |
0.077 |
| 2020 |
180.4 |
0.070 |
| 2021 |
220.3 |
0.080 |
| 2022 |
247.0 |
0.101 |
| 2023 |
264.7 |
0.119 |
| 2024 |
278.7 |
0.126 |
| 2025 |
292.5 |
0.120 |
| 2026 |
310.2 |
0.098 |
| 2027 |
343.1 |
0.066 |
| 2028 |
48.6 |
0.056 |
| 2029 |
97.7 |
0.077 |
| 2030 |
130.9 |
0.079 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
|
|
|
|
|
|
|
|
Measures: green=micrometric, blue=interferometric, purple=photographic |
|
