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 | 2021 | Obs | 21 | ||||||
Pa first | 298 | Pa last | 266.6 | P.A. Now (θ) | 271.3° | ||||||
Sep first | 0.7 | Sep last | 0.577 | Sep. Now (ρ) | 0.589" | ||||||
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) |
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 | <=== |
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 |
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.) |
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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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