03272+0944 HDS 433 AB (Xi Tau)
03h 27m 10.12s +09° 43' 58.0" P.A. 267.00 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 |
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Coord arcsec 2000 |
03 27 10.12 +09 43 58.0 |
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Date first |
1983 |
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Date last |
2021 |
|
Obs |
21 |
|
Pa first |
298 |
|
Pa last |
266.6 |
|
P.A. Now (θ) |
271.3° |
|
Sep first |
0.7 |
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Sep last |
0.577 |
|
Sep. Now (ρ) |
0.589" |
|
Mag pri |
3.74 |
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Mag sec |
7.55 |
|
delta mag (ΔM) |
3.81 |
|
Spectral class |
B9Vn (blue-white) |
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Pri motion ra |
+054 |
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Sec motion ra |
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Pri motion dec |
-038 |
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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.
03272+0944 SYSTEM COMPONENTS
Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
Show |
|
111195 |
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 |
2021 |
21 |
267 |
0.6 |
3.74 |
7.55 |
3.81 |
Y |
<=== |
Triple system
2 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 |
|
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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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