11544-3745 HWE 71 (HD 103437)
11h 54m 25.81s -37° 44' 56.1" P.A. 72.00 sep 0.2 mag 6.75,8.60 Sp F7V dist. 50.61 pc (165.09 l.y.)
| Coord 2000 |
11544-3745 |
|
Discov num |
HWE 71 |
|
Comp |
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Coord arcsec 2000 |
11 54 25.81 -37 44 56.1 |
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| Date first |
1876 |
|
Date last |
2018 |
|
Obs |
29 |
|
| Pa first |
270 |
|
Pa last |
72 |
|
P.A. Now (θ) |
28.8° |
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| Sep first |
1.2 |
|
Sep last |
0.179 |
|
Sep. Now (ρ) |
0.106" |
|
| Mag pri |
6.75 |
|
Mag sec |
8.60 |
|
delta mag (ΔM) |
1.85 |
|
Spectral class |
F7V (yellow-white) |
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| Pri motion ra |
-315 |
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Sec motion ra |
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| Pri motion dec |
+061 |
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Sec motion dec |
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| Notes |
O
(Orbital solution) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 103437 |
|
Constellation |
Centaurus |
|
SAO |
202926 |
|
HIP |
58057 |
|
| Tycho2 |
7742-01391-1 |
|
HD |
103437 |
|
HR |
4557 |
|
GC |
16280 |
|
| GL |
Gl 452.2A |
|
CD |
CD-37 7536 |
|
CP |
CP-37 4950 |
|
Distance |
50.61 |
|
| Distance ly |
165.09 |
|
ORBITAL ELEMENTS
| Period (P) | 248.8y | |
Periastron (T) | 2008.48y | |
Semi-major axis (a) | 1.004a | |
| Eccentricity (e) | 0.72 | |
Inclination (i) | 99.6° | |
Longitude of periastron (ω) | 162° | |
| Node (Ω) | 276.3° | |
Notes | | |
Reference | Tok2015c | |
| Equinox | 2000 | |
Last observation | 2014 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
225.4 |
0.091 |
| 2001 |
197.2 |
0.068 |
| 2002 |
159.5 |
0.070 |
| 2003 |
133.6 |
0.095 |
| 2004 |
119.8 |
0.130 |
| 2005 |
112.0 |
0.166 |
| 2006 |
107.0 |
0.201 |
| 2007 |
103.4 |
0.232 |
| 2008 |
100.6 |
0.258 |
| 2009 |
98.2 |
0.277 |
| 2010 |
96.1 |
0.288 |
| 2011 |
94.1 |
0.292 |
| 2012 |
92.1 |
0.289 |
| 2013 |
90.0 |
0.280 |
| 2014 |
87.8 |
0.267 |
| 2015 |
85.3 |
0.251 |
| 2016 |
82.4 |
0.232 |
| 2017 |
78.9 |
0.212 |
| 2018 |
74.8 |
0.191 |
| 2019 |
69.5 |
0.169 |
| 2020 |
62.8 |
0.149 |
| 2021 |
54.1 |
0.130 |
| 2022 |
42.8 |
0.115 |
| 2023 |
28.8 |
0.106 |
| 2024 |
13.0 |
0.103 |
| 2025 |
357.5 |
0.107 |
| 2026 |
344.2 |
0.119 |
| 2027 |
333.6 |
0.135 |
| 2028 |
325.5 |
0.155 |
| 2029 |
319.3 |
0.176 |
| 2030 |
314.5 |
0.199 |
| 2031 |
310.7 |
0.223 |
| 2032 |
307.6 |
0.248 |
| 2033 |
305.1 |
0.272 |
| 2034 |
303.0 |
0.297 |
| 2035 |
301.3 |
0.322 |
| 2036 |
299.7 |
0.346 |
| 2037 |
298.4 |
0.371 |
| 2038 |
297.3 |
0.395 |
| 2039 |
296.3 |
0.419 |
| 2040 |
295.3 |
0.443 |
| 2041 |
294.5 |
0.467 |
| 2042 |
293.8 |
0.491 |
| 2043 |
293.1 |
0.514 |
| 2044 |
292.5 |
0.537 |
| 2045 |
292.0 |
0.560 |
| 2046 |
291.4 |
0.583 |
| 2047 |
291.0 |
0.605 |
| 2048 |
290.5 |
0.627 |
| 2049 |
290.1 |
0.649 |
| 2050 |
289.7 |
0.670 |
|
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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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