# 104 Tauri

> Mediated Wiki article. Canonical URL: https://mediated.wiki/source/104_Tauri
> Markdown URL: https://mediated.wiki/source/104_Tauri.md
> Source: https://en.wikipedia.org/wiki/104_Tauri
> Source revision: 1352280632
> License: Creative Commons Attribution-ShareAlike 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/)

**104 Tauri** (**104 Tau**) is the [Flamsteed designation](/source/Flamsteed_designation) for a [star](/source/Star) in the [equatorial](/source/Celestial_equator) [constellation](/source/Constellation) of [Taurus](/source/Taurus_(constellation)). It has an [apparent magnitude](/source/Apparent_magnitude) of 4.92, which is bright enough to be seen with the naked eye. Based upon [parallax](/source/Stellar_parallax) measurements, this star is located about 50 [light-years](/source/Light-year) from the [Sun](/source/Sun).[1] It is moving further from the Sun with a heliocentric [radial velocity](/source/Radial_velocity) of +20 km/s.[2]

This star has a [stellar classification](/source/Stellar_classification) of G4 V,[2] which suggests it is an ordinary [G-type main-sequence star](/source/G-type_main-sequence_star) that is generating energy through [hydrogen fusion](/source/Hydrogen_fusion) at its [stellar core](/source/Stellar_core). It is an estimated 10[3] billion years old and is spinning with a [projected rotational velocity](/source/Projected_rotational_velocity) of 10 km/s.[2] The star has about the same [mass as the Sun](/source/Solar_mass), with 1.6 times the [Sun's radius](/source/Sun's_radius).[4] It is radiating 2.4[5] times the [Sun's luminosity](/source/Sun's_luminosity) from its [photosphere](/source/Photosphere) at an [effective temperature](/source/Effective_temperature) of 5,717 K.[3]

104 Tauri appears to have a modest barium enrichment compared to iron. This may indicate that the star had accreted stellar wind of a companion star in the [asymptotic giant branch](/source/Asymptotic_giant_branch), which has since evolved into a white dwarf.[6]

The star displays convincing evidence for an [infrared excess](/source/Infrared_excess), suggesting the presence of a circumstellar [debris disk](/source/Debris_disk) of dust.[7] It also presents a statistically significant difference on [proper motion](/source/Proper_motion) measurements taken by the [Hipparcos](/source/Hipparcos) and [Gaia](/source/Gaia_(spacecraft)) spacecrafts, suggesting the presence of an orbiting [exoplanet](/source/Exoplanet).[8]

On 24 July 2028, it will be occulted by [Venus](/source/Venus) over [Japan](/source/Japan), [East Siberia](/source/East_Siberia) and the [Pacific Ocean](/source/Pacific_Ocean).[9]: 165

## References

1. van Leeuwen, F. (November 2007), "Validation of the new Hipparcos reduction", *Astronomy and Astrophysics*. **474** (2): 653–664, [arXiv:0708.1752](https://arxiv.org/abs/0708.1752). [Bibcode:2007A&A...474..653V](https://ui.adsabs.harvard.edu/abs/2007A%26A...474..653V). [doi:10.1051/0004-6361:20078357](https://doi.org/10.1051/0004-6361:20078357). [S2CID 18759600](https://api.semanticscholar.org/CorpusID:18759600)

1. White, Russel J. et al. (June 2007), "High-Dispersion Optical Spectra of Nearby Stars Younger Than the Sun", *The Astronomical Journal*. **133** (6): 2524–2536, [arXiv:0706.0542](https://arxiv.org/abs/0706.0542). [Bibcode:2007AJ....133.2524W](https://ui.adsabs.harvard.edu/abs/2007AJ....133.2524W). [doi:10.1086/514336](https://doi.org/10.1086/514336). [S2CID 122854](https://api.semanticscholar.org/CorpusID:122854)

1. Ramírez, I. et al. (February 2013), "Oxygen abundances in nearby FGK stars and the galactic chemical evolution of the local disk and halo", *The Astrophysical Journal*. **764** (1): 78, [arXiv:1301.1582](https://arxiv.org/abs/1301.1582). [Bibcode:2013ApJ...764...78R](https://ui.adsabs.harvard.edu/abs/2013ApJ...764...78R). [doi:10.1088/0004-637X/764/1/78](https://doi.org/10.1088/0004-637X/764/1/78). [S2CID 118751608](https://api.semanticscholar.org/CorpusID:118751608)

1. Bernkopf, Jan & Fuhrmann, Klaus (June 2006), "Local subgiants and time-scales of disc formation", *Monthly Notices of the Royal Astronomical Society*. **369** (2): 673–676, [Bibcode:2006MNRAS.369..673B](https://ui.adsabs.harvard.edu/abs/2006MNRAS.369..673B). [doi:10.1111/j.1365-2966.2006.10326.x](https://doi.org/10.1111/j.1365-2966.2006.10326.x)

1. Anderson, E. & Francis, Ch. (2012), "XHIP: An extended hipparcos compilation", *Astronomy Letters*. **38** (5): 331, [arXiv:1108.4971](https://arxiv.org/abs/1108.4971). [Bibcode:2012AstL...38..331A](https://ui.adsabs.harvard.edu/abs/2012AstL...38..331A). [doi:10.1134/S1063773712050015](https://doi.org/10.1134/S1063773712050015). [S2CID 119257644](https://api.semanticscholar.org/CorpusID:119257644)

1. Fuhrmann, K.; Chini, R.; Kaderhandt, L.; Chen, Z.; Lachaume, R. (2017-07-21). "The barium-to-iron enrichment versus age relation of ancient disc stars". *Monthly Notices of the Royal Astronomical Society*. **471** (3): 3768–3774. Oxford University Press (OUP). [Bibcode:2017MNRAS.471.3768F](https://ui.adsabs.harvard.edu/abs/2017MNRAS.471.3768F). [doi:10.1093/mnras/stx1848](https://doi.org/10.1093/mnras/stx1848). [ISSN 0035-8711](https://www.worldcat.org/issn/0035-8711)

1. Holmes, E. K. et al. (June 2003), "A Survey of Nearby Main-Sequence Stars for Submillimeter Emission", *The Astronomical Journal*. **125** (6): 3334–3343, [Bibcode:2003AJ....125.3334H](https://ui.adsabs.harvard.edu/abs/2003AJ....125.3334H). [doi:10.1086/375202](https://doi.org/10.1086/375202)

1. Painter, Katie E.; Bowler, Brendan P.; Franson, Kyle; Becker, Juliette C.; Burt, Jennifer A. (2025-06-26), "Astrometric Accelerations of Provisional Targets for the Habitable Worlds Observatory", *The Astronomical Journal*, [arXiv:2506.21768](https://arxiv.org/abs/2506.21768)

1. Meeus, Jan (2002). ["Mutual occultations of planets"](https://web.archive.org/web/20250405185720/https://falakmu.id/khgt/dokumen/More%20mathematical%20astronomy%20morsels%20%28Jean%20Meeus%29%20%28Z-Library%29.pdf). *More Mathematical Astronomy Morsels*. pp. 174–185. ISBN 0943396743. Archived from [the original](https://falakmu.id/khgt/dokumen/More%20mathematical%20astronomy%20morsels%20(Jean%20Meeus)%20(Z-Library).pdf) on 2025-04-05. Retrieved 2025-02-21.

---
Adapted from the Wikipedia article [104 Tauri](https://en.wikipedia.org/wiki/104_Tauri) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/104_Tauri?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.