13520-3137 BU 343 AB (HD 120759)
13h 52m 00.97s -31° 37' 09.2" P.A. 190.00 sep 0.8 mag 6.26,8.91 Sp F7V dist. 52.69 pc (171.87 l.y.)
| Coord 2000 |
13520-3137 |
|
Discov num |
BU 343 |
|
Comp |
AB |
|
Coord arcsec 2000 |
13 52 00.97 -31 37 09.2 |
|
| Date first |
1875 |
|
Date last |
2021 |
|
Obs |
81 |
|
| Pa first |
120 |
|
Pa last |
190.1 |
|
P.A. Now (θ) |
188.1° |
|
| Sep first |
1.2 |
|
Sep last |
0.83 |
|
Sep. Now (ρ) |
0.869" |
|
| Mag pri |
6.26 |
|
Mag sec |
8.91 |
|
delta mag (ΔM) |
2.65 |
|
Spectral class |
F7V (yellow-white) |
|
| Pri motion ra |
-038 |
|
Sec motion ra |
-038 |
|
| Pri motion dec |
-045 |
|
Sec motion dec |
-045 |
|
| Notes |
O
(Orbital solution) |
|
This double is physical.
13520-3137 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
HD 120759 |
204922 |
13 52 01 -31 37 09 |
BU 343 AB |
2021 |
81 |
190 |
0.8 |
6.26 |
8.91 |
2.65 |
Y |
<=== |
| Show |
|
204922 |
13 52 01 -31 37 09 |
ARY 111 AB,C |
2016 |
6 |
95 |
94.4 |
6.26 |
9.40 |
3.14 |
|
|
Triple system
4 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 120759 |
|
Constellation |
Centaurus |
|
SAO |
204922 |
|
HIP |
67696 |
|
| Tycho2 |
7279-01836-1 |
|
Gaia DR2 |
6171751078162433280 |
|
HD |
120759 |
|
HR |
5212 |
|
| GC |
18733 |
|
CD |
CD-3110706 |
|
CP |
CP-30 3752 |
|
Distance |
52.69 |
|
| Distance ly |
171.87 |
|
ORBITAL ELEMENTS
| Period (P) | 254.8y | ± 4.8 |
Periastron (T) | 1996.36y | ± 0.09 |
Semi-major axis (a) | 1.0709a | ± 0.01 |
| Eccentricity (e) | 0.646 | ± 0.005 |
Inclination (i) | 135.4° | ± 0.4 |
Longitude of periastron (ω) | 242.9° | ± 0.9 |
| Node (Ω) | 187.2° | ± 0.6 |
Notes | | |
Reference | Tok2020e | |
| Equinox | | |
Last observation | | |
Grade | 3 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
272.9 |
0.286 |
| 2001 |
262.5 |
0.299 |
| 2002 |
253.2 |
0.318 |
| 2003 |
245.1 |
0.341 |
| 2004 |
238.0 |
0.367 |
| 2005 |
232.0 |
0.396 |
| 2006 |
226.7 |
0.425 |
| 2007 |
222.2 |
0.455 |
| 2008 |
218.2 |
0.486 |
| 2009 |
214.7 |
0.516 |
| 2010 |
211.5 |
0.545 |
| 2011 |
208.7 |
0.575 |
| 2012 |
206.2 |
0.603 |
| 2013 |
203.9 |
0.631 |
| 2014 |
201.8 |
0.658 |
| 2015 |
199.8 |
0.684 |
| 2016 |
198.0 |
0.710 |
| 2017 |
196.3 |
0.735 |
| 2018 |
194.7 |
0.759 |
| 2019 |
193.2 |
0.782 |
| 2020 |
191.8 |
0.805 |
| 2021 |
190.5 |
0.827 |
| 2022 |
189.3 |
0.848 |
| 2023 |
188.1 |
0.869 |
| 2024 |
186.9 |
0.889 |
| 2025 |
185.8 |
0.909 |
| 2026 |
184.8 |
0.927 |
| 2027 |
183.8 |
0.946 |
| 2028 |
182.8 |
0.963 |
| 2029 |
181.9 |
0.981 |
| 2030 |
181.0 |
0.997 |
|
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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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