04239+0928 HU 304 (66 Tau)
04h 23m 51.84s +09° 27' 39.5" P.A. 35.00 sep 0.3 mag 5.80,5.90 Sp A0V+A1V dist. 121.36 pc (395.88 l.y.)
| Coord 2000 |
04239+0928 |
|
Discov num |
HU 304 |
|
Comp |
|
|
Coord arcsec 2000 |
04 23 51.84 +09 27 39.5 |
|
| Date first |
1901 |
|
Date last |
2018 |
|
Obs |
146 |
|
| Pa first |
24 |
|
Pa last |
35 |
|
P.A. Now (θ) |
41° |
|
| Sep first |
0.3 |
|
Sep last |
0.306 |
|
Sep. Now (ρ) |
0.312" |
|
| Mag pri |
5.80 |
|
Mag sec |
5.90 |
|
delta mag (ΔM) |
0.1 |
|
Spectral class |
A0V+A1V (white/white) |
|
| Pri motion ra |
-024 |
|
Sec motion ra |
|
|
| Pri motion dec |
-005 |
|
Sec motion dec |
|
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
66 Tau |
|
Constellation |
Taurus |
|
SAO |
111791 |
|
HIP |
20522 |
|
| Tycho2 |
0672-01284-1 |
|
HD |
27820 |
|
HR |
1381 |
|
GC |
5325 |
|
| ADS |
3182 |
|
BD |
BD+09 570 |
|
Flamsteed |
66 Tauri |
|
Flamsteed name |
66 Tau |
|
| Distance |
121.36 |
|
Distance ly |
395.88 |
|
ORBITAL ELEMENTS
| Period (P) | 54.77y | |
Periastron (T) | 1937.24y | |
Semi-major axis (a) | 0.188a | |
| Eccentricity (e) | 0.72 | |
Inclination (i) | 34.2° | |
Longitude of periastron (ω) | 332° | |
| Node (Ω) | 239.8° | |
Notes | n | |
Reference | Hrt2000b | |
| Equinox | | |
Last observation | 1997 | |
Grade | 2 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
354.2 |
0.167 |
| 2001 |
358.6 |
0.181 |
| 2002 |
2.4 |
0.194 |
| 2003 |
5.7 |
0.207 |
| 2004 |
8.6 |
0.218 |
| 2005 |
11.3 |
0.229 |
| 2006 |
13.7 |
0.240 |
| 2007 |
16.0 |
0.249 |
| 2008 |
18.0 |
0.258 |
| 2009 |
20.0 |
0.266 |
| 2010 |
21.8 |
0.273 |
| 2011 |
23.6 |
0.280 |
| 2012 |
25.2 |
0.286 |
| 2013 |
26.8 |
0.292 |
| 2014 |
28.4 |
0.296 |
| 2015 |
29.9 |
0.301 |
| 2016 |
31.3 |
0.304 |
| 2017 |
32.7 |
0.307 |
| 2018 |
34.1 |
0.310 |
| 2019 |
35.5 |
0.311 |
| 2020 |
36.9 |
0.312 |
| 2021 |
38.3 |
0.313 |
| 2022 |
39.6 |
0.313 |
| 2023 |
41.0 |
0.312 |
| 2024 |
42.4 |
0.311 |
| 2025 |
43.7 |
0.308 |
| 2026 |
45.2 |
0.306 |
| 2027 |
46.6 |
0.302 |
| 2028 |
48.1 |
0.298 |
| 2029 |
49.6 |
0.293 |
| 2030 |
51.2 |
0.287 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
|
|
|
|
|
|
|
|
Measures: green=micrometric, blue=interferometric, purple=photographic |
|
