05418-5000 HU 1568 (HD 38255)
05h 41m 49.29s -50° 00' 15.3" P.A. 128.00 sep 0.3 mag 9.34,9.42 Sp K0/1V+ dist. 54.79 pc (178.72 l.y.)
| Coord 2000 |
05418-5000 |
|
Discov num |
HU 1568 |
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Comp |
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Coord arcsec 2000 |
05 41 49.29 -50 00 15.3 |
|
| Date first |
1914 |
|
Date last |
2019 |
|
Obs |
27 |
|
| Pa first |
228 |
|
Pa last |
127.8 |
|
P.A. Now (θ) |
127.8° |
|
| Sep first |
0.6 |
|
Sep last |
0.312 |
|
Sep. Now (ρ) |
0.312" |
|
| Mag pri |
9.34 |
|
Mag sec |
9.42 |
|
delta mag (ΔM) |
0.08 |
|
Spectral class |
K0/1V+ (yellow-orange) |
|
| Pri motion ra |
+062 |
|
Sec motion ra |
+062 |
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| Pri motion dec |
+079 |
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Sec motion dec |
+079 |
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| Notes |
O
(Orbital solution) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 38255 |
|
Constellation |
Pictor |
|
SAO |
234096 |
|
HIP |
26830 |
|
| Tycho2 |
8095-01135-1 |
|
HD |
38255 |
|
CD |
CD-50 1894 |
|
CP |
CP-50 826 |
|
| Distance |
54.79 |
|
Distance ly |
178.72 |
|
ORBITAL ELEMENTS
| Period (P) | 307.49y | |
Periastron (T) | 2021.62y | |
Semi-major axis (a) | 1.025a | |
| Eccentricity (e) | 0.391 | |
Inclination (i) | 109.5° | |
Longitude of periastron (ω) | 76.7° | |
| Node (Ω) | 171.3° | |
Notes | | |
Reference | Hrt2011d | |
| Equinox | 2000 | |
Last observation | 2010 | |
Grade | 5 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
164.5 |
0.679 |
| 2001 |
163.7 |
0.664 |
| 2002 |
162.8 |
0.647 |
| 2003 |
161.9 |
0.630 |
| 2004 |
160.9 |
0.613 |
| 2005 |
159.9 |
0.595 |
| 2006 |
158.8 |
0.576 |
| 2007 |
157.6 |
0.556 |
| 2008 |
156.3 |
0.536 |
| 2009 |
154.9 |
0.515 |
| 2010 |
153.5 |
0.494 |
| 2011 |
151.8 |
0.472 |
| 2012 |
150.1 |
0.450 |
| 2013 |
148.1 |
0.428 |
| 2014 |
145.9 |
0.406 |
| 2015 |
143.5 |
0.383 |
| 2016 |
140.8 |
0.361 |
| 2017 |
137.7 |
0.339 |
| 2018 |
134.2 |
0.317 |
| 2019 |
130.1 |
0.297 |
| 2020 |
125.5 |
0.277 |
| 2021 |
120.3 |
0.259 |
| 2022 |
114.2 |
0.243 |
| 2023 |
107.4 |
0.229 |
| 2024 |
99.9 |
0.219 |
| 2025 |
91.7 |
0.212 |
| 2026 |
83.2 |
0.210 |
| 2027 |
74.7 |
0.212 |
| 2028 |
66.4 |
0.218 |
| 2029 |
58.8 |
0.228 |
| 2030 |
51.9 |
0.241 |
|
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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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