16057-3252 WSI 84 Ba,Bb
16h 05m 39.42s -32° 51' 42.6" P.A. 212.00 sep 0.1 mag 10.00,10.10 dist. 40.49 pc (132.08 l.y.)
| Coord 2000 |
16057-3252 |
|
Discov num |
WSI 84 |
|
Comp |
Ba,Bb |
|
Coord arcsec 2000 |
16 05 39.42 -32 51 42.6 |
|
| Date first |
2008 |
|
Date last |
2021 |
|
Obs |
16 |
|
| Pa first |
304 |
|
Pa last |
212.4 |
|
P.A. Now (θ) |
154.6° |
|
| Sep first |
0.1 |
|
Sep last |
0.109 |
|
Sep. Now (ρ) |
0.093" |
|
| Mag pri |
10.00 |
|
Mag sec |
10.10 |
|
delta mag (ΔM) |
0.1 |
|
Spectral class |
|
|
| Pri motion ra |
-374 |
|
Sec motion ra |
|
|
| Pri motion dec |
-212 |
|
Sec motion dec |
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|
| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
16057-3252 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
HD 144179 |
207321 |
16 05 39 -32 51 44 |
SEE 264 AB |
2021 |
50 |
356 |
0.8 |
8.34 |
9.29 |
0.95 |
Y |
|
| Show |
|
|
16 05 39 -32 51 44 |
SEE 264 AC |
2015 |
12 |
3 |
10.0 |
8.34 |
11.15 |
2.81 |
|
|
| Show |
|
207321 |
16 05 39 -32 51 43 |
WSI 84 Ba,Bb |
2021 |
16 |
212 |
0.1 |
10.00 |
10.10 |
0.10 |
Y |
<=== |
Quadruple system
3 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Spectr |
K0V |
|
Constellation |
Lupus |
|
SAO |
207321 |
|
HIP |
78842 |
|
| Tycho2 |
7334-01540-1 |
|
HD |
144179 |
|
GL |
Wo 9543A |
|
CD |
CD-3211405 |
|
| CP |
CP-32 4075 |
|
Distance |
40.49 |
|
Distance ly |
132.08 |
|
ORBITAL ELEMENTS
| Period (P) | 10.46y | ± 0.07 |
Periastron (T) | 2012.623y | ± 0.027 |
Semi-major axis (a) | 0.1284a | ± 0.0009 |
| Eccentricity (e) | 0.24 | ± 0.006 |
Inclination (i) | 141.8° | ± 0.8 |
Longitude of periastron (ω) | 34.9° | ± 1.7 |
| Node (Ω) | 179.1° | ± 1.4 |
Notes | | |
Reference | Tok2018j | |
| Equinox | | |
Last observation | 2017 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
241.0 |
0.105 |
| 2001 |
201.3 |
0.104 |
| 2002 |
158.6 |
0.094 |
| 2003 |
100.1 |
0.082 |
| 2004 |
47.0 |
0.105 |
| 2005 |
16.8 |
0.135 |
| 2006 |
356.2 |
0.152 |
| 2007 |
337.8 |
0.153 |
| 2008 |
317.8 |
0.140 |
| 2009 |
292.5 |
0.122 |
| 2010 |
258.8 |
0.107 |
| 2011 |
219.5 |
0.104 |
| 2012 |
179.3 |
0.101 |
| 2013 |
129.2 |
0.085 |
| 2014 |
68.0 |
0.091 |
| 2015 |
28.8 |
0.122 |
| 2016 |
5.1 |
0.147 |
| 2017 |
346.3 |
0.154 |
| 2018 |
327.5 |
0.147 |
| 2019 |
305.0 |
0.130 |
| 2020 |
275.3 |
0.113 |
| 2021 |
237.8 |
0.104 |
| 2022 |
198.1 |
0.104 |
| 2023 |
154.6 |
0.093 |
| 2024 |
95.0 |
0.083 |
| 2025 |
43.9 |
0.107 |
| 2026 |
14.9 |
0.137 |
| 2027 |
354.7 |
0.153 |
| 2028 |
336.3 |
0.152 |
| 2029 |
316.0 |
0.139 |
| 2030 |
290.1 |
0.120 |
|
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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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