03272+0944 HDS 433 AB (Xi Tau)
03h 27m 10.12s +09° 43' 58.0" P.A. 273.00 sep 0.6 mag 3.74,7.55 Sp B9Vn dist. 64.1 pc (209.09 l.y.)
| Coord 2000 |
03272+0944 |
|
Discov num |
HDS 433 |
|
Comp |
AB |
|
Coord arcsec 2000 |
03 27 10.12 +09 43 58.0 |
|
| Date first |
1983 |
|
Date last |
2023 |
|
Obs |
24 |
|
| Pa first |
298 |
|
Pa last |
272.6 |
|
P.A. Now (θ) |
279.2° (calc) |
|
| Sep first |
0.7 |
|
Sep last |
0.615 |
|
Sep. Now (ρ) |
0.639" (calc) |
|
| Mag pri |
3.74 |
|
Mag sec |
7.55 |
|
delta mag (ΔM) |
3.81 |
|
Spectral class |
B9Vn (blue-white) |
|
| Pri motion ra |
+054 |
|
Sec motion ra |
|
|
| Pri motion dec |
-038 |
|
Sec motion dec |
|
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
03272+0944 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
93438 |
03 27 10 +09 43 58 |
MKT 15 Aa,Ab |
2013 |
31 |
337 |
0.0 |
4.79 |
4.25 |
0.54 |
Y |
|
| Show |
Xi Tau |
111195 |
03 27 10 +09 43 58 |
HDS 433 AB |
2023 |
24 |
273 |
0.6 |
3.74 |
7.55 |
3.81 |
Y |
<=== |
Triple system
3 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Name |
Xi Tau |
|
Constellation |
Taurus |
|
SAO |
111195 |
|
HIP |
16083 |
|
| Tycho2 |
0650-01469-1 |
|
Gaia DR2 |
12730974555930624 |
|
HD |
21364 |
|
HR |
1038 |
|
| GC |
4107 |
|
BD |
BD+09 439 |
|
Bayer |
Xi Tauri |
|
Bayer name |
Xi Tau |
|
| Flamsteed |
2 Tauri |
|
Flamsteed name |
2 Tau |
|
FK5 |
123 |
|
Distance |
64.1 |
|
| Distance ly |
209.09 |
|
Bayer greek |
ξ Tau |
|
ORBITAL ELEMENTS
| Period (P) | 50.81y | ± 0.62 |
Periastron (T) | 2008.43y | ± 0.04 |
Semi-major axis (a) | 0.439a | ± 0.004 |
| Eccentricity (e) | 0.571 | ± 0.004 |
Inclination (i) | 26.7° | ± 1.2 |
Longitude of periastron (ω) | 8° | ± 2.9 |
| Node (Ω) | 109.4° | ± 2.9 |
Notes | n | |
Reference | Tok2015c | |
| Equinox | 2000 | |
Last observation | 2014 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
347.8 |
0.413 |
| 2001 |
354.2 |
0.381 |
| 2002 |
1.8 |
0.347 |
| 2003 |
11.0 |
0.313 |
| 2004 |
22.5 |
0.279 |
| 2005 |
37.0 |
0.248 |
| 2006 |
55.4 |
0.221 |
| 2007 |
78.1 |
0.201 |
| 2008 |
104.5 |
0.190 |
| 2009 |
132.8 |
0.188 |
| 2010 |
160.1 |
0.197 |
| 2011 |
183.5 |
0.219 |
| 2012 |
201.9 |
0.250 |
| 2013 |
215.9 |
0.286 |
| 2014 |
226.7 |
0.324 |
| 2015 |
235.3 |
0.361 |
| 2016 |
242.3 |
0.397 |
| 2017 |
248.2 |
0.431 |
| 2018 |
253.2 |
0.463 |
| 2019 |
257.6 |
0.492 |
| 2020 |
261.5 |
0.520 |
| 2021 |
265.0 |
0.545 |
| 2022 |
268.3 |
0.568 |
| 2023 |
271.3 |
0.589 |
| 2024 |
274.1 |
0.607 |
| 2025 |
276.7 |
0.624 |
| 2026 |
279.2 |
0.639 |
| 2027 |
281.6 |
0.651 |
| 2028 |
283.9 |
0.662 |
| 2029 |
286.2 |
0.671 |
| 2030 |
288.4 |
0.678 |
| 2031 |
290.5 |
0.683 |
| 2032 |
292.7 |
0.687 |
| 2033 |
294.8 |
0.688 |
| 2034 |
296.9 |
0.688 |
| 2035 |
299.0 |
0.686 |
| 2036 |
301.2 |
0.682 |
| 2037 |
303.3 |
0.677 |
| 2038 |
305.5 |
0.670 |
| 2039 |
307.8 |
0.661 |
| 2040 |
310.1 |
0.650 |
| 2041 |
312.6 |
0.637 |
| 2042 |
315.1 |
0.622 |
| 2043 |
317.7 |
0.606 |
| 2044 |
320.5 |
0.588 |
| 2045 |
323.5 |
0.568 |
| 2046 |
326.8 |
0.546 |
| 2047 |
330.3 |
0.522 |
| 2048 |
334.2 |
0.496 |
| 2049 |
338.5 |
0.468 |
| 2050 |
343.3 |
0.438 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
Measures: green=micrometric, blue=interferometric, purple=photographic
|
|
