05472+2153 HU 39 (HD 38493)
05h 47m 10.18s +21° 52' 31.6" P.A. 21.00 sep 0.2 mag 9.10,9.20 Sp G0
| Coord 2000 |
05472+2153 |
|
Discov num |
HU 39 |
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Comp |
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Coord arcsec 2000 |
05 47 10.18 +21 52 31.6 |
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| Date first |
1900 |
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Date last |
2008 |
|
Obs |
23 |
|
| Pa first |
43 |
|
Pa last |
20.9 |
|
P.A. Now (θ) |
217.1° |
|
| Sep first |
0.3 |
|
Sep last |
0.152 |
|
Sep. Now (ρ) |
0.182" |
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| Mag pri |
9.10 |
|
Mag sec |
9.20 |
|
delta mag (ΔM) |
0.1 |
|
Spectral class |
G0 (yellow) |
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| Pri motion ra |
-003 |
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Sec motion ra |
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| Pri motion dec |
-045 |
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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 38493 |
|
Constellation |
Taurus |
|
SAO |
77553 |
|
Tycho2 |
1311-01642-1 |
|
| Gaia DR2 |
3403213754709441152 |
|
HD |
38493 |
|
ADS |
4373 |
|
ORBITAL ELEMENTS
| Period (P) | 47.17y | |
Periastron (T) | 1975.23y | |
Semi-major axis (a) | 0.267a | |
| Eccentricity (e) | 0.26 | |
Inclination (i) | 99.2° | |
Longitude of periastron (ω) | 195.1° | |
| Node (Ω) | 41° | |
Notes | n | |
Reference | Alz2020c | |
| Equinox | 2000 | |
Last observation | 2020 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
37.6 |
0.315 |
| 2001 |
36.7 |
0.303 |
| 2002 |
35.7 |
0.289 |
| 2003 |
34.7 |
0.272 |
| 2004 |
33.4 |
0.253 |
| 2005 |
32.0 |
0.232 |
| 2006 |
30.3 |
0.208 |
| 2007 |
28.1 |
0.182 |
| 2008 |
25.1 |
0.155 |
| 2009 |
20.8 |
0.126 |
| 2010 |
13.9 |
0.097 |
| 2011 |
1.3 |
0.069 |
| 2012 |
334.7 |
0.047 |
| 2013 |
291.0 |
0.045 |
| 2014 |
259.9 |
0.063 |
| 2015 |
245.0 |
0.090 |
| 2016 |
237.1 |
0.118 |
| 2017 |
232.2 |
0.144 |
| 2018 |
228.7 |
0.167 |
| 2019 |
226.0 |
0.184 |
| 2020 |
223.7 |
0.196 |
| 2021 |
221.6 |
0.199 |
| 2022 |
219.4 |
0.195 |
| 2023 |
217.1 |
0.182 |
| 2024 |
214.3 |
0.162 |
| 2025 |
210.5 |
0.136 |
| 2026 |
204.7 |
0.105 |
| 2027 |
193.7 |
0.073 |
| 2028 |
166.9 |
0.045 |
| 2029 |
111.8 |
0.040 |
| 2030 |
77.4 |
0.065 |
|
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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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