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 |
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Discov num |
B 1493 |
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Comp |
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Coord arcsec 2000 |
05 50 28.83 -52 46 04.5 |
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Date first |
1929 |
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Date last |
2019 |
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Obs |
17 |
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Pa first |
270 |
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Pa last |
301.5 |
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P.A. Now (θ) |
301.5° |
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Sep first |
0.3 |
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Sep last |
0.128 |
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Sep. Now (ρ) |
0.128" |
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Mag pri |
7.06 |
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Mag sec |
7.41 |
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delta mag (ΔM) |
0.35 |
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Spectral class |
K0/1+A4V (yellow-orange/white) |
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Pri motion ra |
+006 |
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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 |
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Constellation |
Pictor |
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SAO |
234162 |
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HIP |
27583 |
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Tycho2 |
8520-00485-1 |
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Gaia DR2 |
4792168245083719680 |
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HD |
39548 |
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HR |
2044 |
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GC |
7370 |
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CP |
CP-52 791 |
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Distance |
214.59 |
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Distance ly |
699.99 |
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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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