05140+5126 HU 821 (HD 33580)
05h 14m 01.68s +51° 25' 51.8" P.A. 173.00 sep 0.8 mag 7.43,9.94 Sp F8 dist. 57.27 pc (186.81 l.y.)
| Coord 2000 |
05140+5126 |
|
Discov num |
HU 821 |
|
Comp |
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Coord arcsec 2000 |
05 14 01.68 +51 25 51.8 |
|
| Date first |
1904 |
|
Date last |
2016 |
|
Obs |
23 |
|
| Pa first |
190 |
|
Pa last |
173.1 |
|
P.A. Now (θ) |
173.1° |
|
| Sep first |
0.9 |
|
Sep last |
0.817 |
|
Sep. Now (ρ) |
0.817" |
|
| Mag pri |
7.43 |
|
Mag sec |
9.94 |
|
delta mag (ΔM) |
2.51 |
|
Spectral class |
F8 (yellow-white) |
|
| Pri motion ra |
+054 |
|
Sec motion ra |
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|
| Pri motion dec |
-163 |
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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 33580 |
|
Constellation |
Auriga |
|
SAO |
25083 |
|
HIP |
24397 |
|
| Tycho2 |
3357-00308-1 |
|
Gaia DR2 |
262575540063728384 |
|
HD |
33580 |
|
ADS |
3780 |
|
| BD |
BD+51 1043 |
|
Distance |
57.27 |
|
Distance ly |
186.81 |
|
ORBITAL ELEMENTS
| Period (P) | 140.98y | |
Periastron (T) | 1971.26y | |
Semi-major axis (a) | 0.653a | |
| Eccentricity (e) | 0.616 | |
Inclination (i) | 40.5° | |
Longitude of periastron (ω) | 312.9° | |
| Node (Ω) | 53.9° | |
Notes | n | |
Reference | Doc2016c | |
| Equinox | 2000 | |
Last observation | 2012 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
148.2 |
0.587 |
| 2001 |
150.1 |
0.599 |
| 2002 |
151.9 |
0.610 |
| 2003 |
153.6 |
0.622 |
| 2004 |
155.3 |
0.633 |
| 2005 |
156.9 |
0.645 |
| 2006 |
158.4 |
0.656 |
| 2007 |
159.9 |
0.667 |
| 2008 |
161.3 |
0.677 |
| 2009 |
162.7 |
0.688 |
| 2010 |
164.1 |
0.699 |
| 2011 |
165.4 |
0.709 |
| 2012 |
166.7 |
0.719 |
| 2013 |
167.9 |
0.729 |
| 2014 |
169.1 |
0.739 |
| 2015 |
170.3 |
0.749 |
| 2016 |
171.5 |
0.759 |
| 2017 |
172.6 |
0.768 |
| 2018 |
173.7 |
0.777 |
| 2019 |
174.7 |
0.786 |
| 2020 |
175.8 |
0.795 |
| 2021 |
176.8 |
0.803 |
| 2022 |
177.8 |
0.812 |
| 2023 |
178.8 |
0.820 |
| 2024 |
179.8 |
0.828 |
| 2025 |
180.7 |
0.835 |
| 2026 |
181.6 |
0.843 |
| 2027 |
182.5 |
0.850 |
| 2028 |
183.4 |
0.857 |
| 2029 |
184.3 |
0.864 |
| 2030 |
185.2 |
0.870 |
|
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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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