05505-5246 B 1493 (HD 39548)
05h 50m 28.83s -52° 46' 04.5" P.A. 302.00 sep 0.1 mag 7.06,7.41 Sp K0/1+A4V dist. 214.59 pc (699.99 l.y.)
| Coord 2000 |
05505-5246 |
|
Discov num |
B 1493 |
|
Comp |
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Coord arcsec 2000 |
05 50 28.83 -52 46 04.5 |
|
| Date first |
1929 |
|
Date last |
2019 |
|
Obs |
17 |
|
| Pa first |
270 |
|
Pa last |
301.5 |
|
P.A. Now (θ) |
301.5° |
|
| Sep first |
0.3 |
|
Sep last |
0.128 |
|
Sep. Now (ρ) |
0.128" |
|
| Mag pri |
7.06 |
|
Mag sec |
7.41 |
|
delta mag (ΔM) |
0.35 |
|
Spectral class |
K0/1+A4V (yellow-orange/white) |
|
| Pri motion ra |
+006 |
|
Sec motion ra |
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| Pri motion dec |
+006 |
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Sec motion dec |
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| Notes |
N
O
(See Notes, Orbital solution) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 39548 |
|
Constellation |
Pictor |
|
SAO |
234162 |
|
HIP |
27583 |
|
| Tycho2 |
8520-00485-1 |
|
Gaia DR2 |
4792168245083719680 |
|
HD |
39548 |
|
HR |
2044 |
|
| GC |
7370 |
|
CP |
CP-52 791 |
|
Distance |
214.59 |
|
Distance ly |
699.99 |
|
ORBITAL ELEMENTS
| Period (P) | 113y | |
Periastron (T) | 2005y | |
Semi-major axis (a) | 0.1625a | |
| Eccentricity (e) | 0.67 | |
Inclination (i) | 140.5° | |
Longitude of periastron (ω) | 170.2° | |
| Node (Ω) | 247.9° | |
Notes | n | |
Reference | Tok2020e | |
| Equinox | | |
Last observation | 2019 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
158.3 |
0.062 |
| 2001 |
144.5 |
0.057 |
| 2002 |
128.5 |
0.053 |
| 2003 |
110.8 |
0.052 |
| 2004 |
92.9 |
0.052 |
| 2005 |
75.5 |
0.053 |
| 2006 |
59.0 |
0.055 |
| 2007 |
43.3 |
0.056 |
| 2008 |
28.4 |
0.058 |
| 2009 |
14.7 |
0.061 |
| 2010 |
2.3 |
0.064 |
| 2011 |
351.5 |
0.069 |
| 2012 |
342.2 |
0.075 |
| 2013 |
334.2 |
0.081 |
| 2014 |
327.5 |
0.088 |
| 2015 |
321.6 |
0.094 |
| 2016 |
316.6 |
0.101 |
| 2017 |
312.2 |
0.108 |
| 2018 |
308.4 |
0.115 |
| 2019 |
304.9 |
0.122 |
| 2020 |
301.9 |
0.129 |
| 2021 |
299.1 |
0.136 |
| 2022 |
296.6 |
0.142 |
| 2023 |
294.3 |
0.149 |
| 2024 |
292.3 |
0.155 |
| 2025 |
290.3 |
0.161 |
| 2026 |
288.5 |
0.167 |
| 2027 |
286.8 |
0.172 |
| 2028 |
285.3 |
0.178 |
| 2029 |
283.8 |
0.183 |
| 2030 |
282.4 |
0.188 |
|
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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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