03272+0944 HDS 433AB (Xi Tau)

 
 
03h 27m 10.12s +09 43' 58.0" P.A. 234 sep 0.4 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
2014
Obs
17
Pa first
298
Pa last
234
P.A. Now (θ)
234°
Sep first
0.7
Sep last
0.4
Sep. Now (ρ)
0.4"
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_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 111195 03272+0944 MKT 15 Aa,Ab 1991 2013 31 337 0.0 4.79 4.25 0.54 Y
Show Xi Tau 111195 03272+0944 HDS 433 AB 1983 2014 17 234 0.4 3.74 7.55 3.81 Y <===
Triple system
2 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
234.4
Precise sep
0.35
Name
Xi Tau
Constellation
Taurus
SAO
111195
HIP
16083
HD
21364
HR
1038
GC
4107
BD
BD+09 439
Bayer
Xi Tauri
Bayer name
Xi Tau
Flamsteed
2 Tauri
Flamsteed name
2 Tau
Distance
64.1
Distance ly
209.09
last precise pa
234.4
last precise sep
0.35
 
 
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)± 2.9
Node (Ω)109.4°± 2.9 Note Grade3(1=Definitive, 9=Indet.)
Equinox2000 Last observation2014
label rho theta
2000 0.413 347.8
2001 0.381 354.2
2002 0.347 1.8
2003 0.313 11.0
2004 0.279 22.5
2005 0.248 37.0
2006 0.221 55.4
2007 0.201 78.1
2008 0.190 104.5
2009 0.188 132.8
2010 0.197 160.1
2011 0.219 183.5
2012 0.250 201.9
2013 0.286 215.9
2014 0.324 226.7
2015 0.361 235.3
2016 0.397 242.3
2017 0.431 248.2
2018 0.463 253.2
2019 0.492 257.6
2020 0.520 261.5
2021 0.545 265.0
2022 0.568 268.3
2023 0.589 271.3
2024 0.607 274.1
2025 0.624 276.7
2026 0.639 279.2
2027 0.651 281.6
2028 0.662 283.9
2029 0.671 286.2
2030 0.678 288.4

Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.

grafico orbita





wds03272%2B0944b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
03272+0944 HDS 433 AB 2014 17 234 0.4 3.74 7.55 B9Vn NO 032710.12+094358.0

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