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 |
|
Comp |
|
|
Coord arcsec 2000 |
05 47 10.18 +21 52 31.6 |
|
Date first |
1900 |
|
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" |
|
Mag pri |
9.10 |
|
Mag sec |
9.20 |
|
delta mag (ΔM) |
0.1 |
|
Spectral class |
G0 (yellow) |
|
Pri motion ra |
-003 |
|
Sec motion ra |
|
|
Pri motion dec |
-045 |
|
Sec motion dec |
|
|
Notes |
N
O
(See Notes, Orbital solution) |
|
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 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
|
|
|
|
|
|
|
|
Measures: green=micrometric, blue=interferometric, purple=photographic |
|