39 Tauri
Coordinates: 
04h 05m 20.26s, +22° 00′ 32.05″
04h 05m 20.26s, +22° 00′ 32.05″| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Taurus |
| Right ascension | 04h 05m 20.258s[1] |
| Declination | +22° 00′ 32.06″[1] |
| Apparent magnitude (V) | 5.90[2] |
| Characteristics | |
| Spectral type | G5 V[3] |
| U−B color index | +0.12[4] |
| B−V color index | +0.62[4] |
| Details | |
Gyr | |
| Database references | |
| SIMBAD | data |
| ARICNS | data |
39 Tauri is a
light years
from the Sun.
39 Tauri has been resolved into a pair of stars using
speckle interferometry.[9] However, many observations have failed to resolve the secondary star.[10]
A
G-type main sequence star; the type of the secondary component is unknown. Stellar models indicate the primary component is similar in physical properties to the Sun, with 110% of the Sun's mass, 96% of the radius, and shining with almost the same luminosity.[2] The overall metallicity of the star—the abundance of elements other than hydrogen and helium—is similar to the Sun.[11] At a relatively youthful estimated age of one billion years,[2] it is rotating with a period of 9.12[5] days. Based upon Hipparcos data, it displays a mild variability with an amplitude of 0.06 magnitude.[12]
The
moving group.[13] It is following an orbit through the Milky Way galaxy that has an eccentricity of 0.06 carrying it as close as 23.9 kly (7.34 kpc) to the Galactic Center, and as far away as 26.8 kly (8.21 kpc). The orbital inclination will carry the star no further than 33 ly (10 pc) away from the galactic plane.[11]
References
- ^ .
- ^ S2CID 118565025.
- ^ Bibcode:1966CoLPL...4...99J.
- ^ S2CID 118640516.
- S2CID 43455849.
- ^ "39 Tau". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2013-10-13.
- ^ MAST: Barbara A. Mikulski Archive for Space Telescopes, Space Telescope Science Institute, retrieved 19 September 2022.
- .
- doi:10.1086/491586.
- ^ S2CID 56118016.
- Bibcode:2000IBVS.4993....1A.
- S2CID 7621053.
