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| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Taurus |
| GK Tauri | |
| Right ascension | 04h 33m 34.5627s[2] |
| Declination | +24° 21′ 05.8545″[2] |
| Apparent magnitude (V) | 15.10 |
| GI Tauri | |
| Right ascension | 04h 33m 34.0609s[3] |
| Declination | +24° 21′ 17.0674″[3] |
| Characteristics | |
| GK Tauri | |
| Evolutionary stage | pre-main-sequence star |
| Spectral type | K7[4] |
| Apparent magnitude (G) | 11.990[2] |
| Variable type | T Tau |
| GI Tauri | |
| Apparent magnitude (G) | 12.608[3] |
| Astrometry | |
| GK Tauri | |
| Proper motion (μ) | RA: 7.46±0.02 mas/yr[2] Dec.: −20.510±0.017 mas/yr[2] |
| Parallax (π) | 7.7433 ± 0.0185 mas[2] |
| Distance | 421 ± 1 ly (129.1 ± 0.3 pc) |
| GI Tauri | |
| Proper motion (μ) | RA: 5.76±0.02 mas/yr[3] Dec.: −20.642±0.019 mas/yr[3] |
| Parallax (π) | 7.7258 ± 0.0198 mas[3] |
| Distance | 422 ± 1 ly (129.4 ± 0.3 pc) |
| Position (relative to GK Tauri)[5] | |
| Component | GI Tauri |
| Angular distance | 13.15797±0.00005″ |
| Position angle | 328.4399±0.0002° |
| Projected separation | 1700 AU |
| Details[5] | |
| GK Tauri | |
| Mass | 0.79±0.07 M☉ |
| Luminosity | 0.80[6] L☉ |
| Temperature | 4007[6] K |
| Age | 2±1 Myr |
| GI Tauri | |
| Mass | 0.53+0.09 −0.11 M☉ |
| Luminosity | 0.49[6] L☉ |
| Temperature | 3792[6] K |
| Age | 2±1 Myr |
| Other designations | |
| GK Tauri: Gaia EDR3 147790206908395776, 2MASS J04333456+2421058, GSC 01829-00040 | |
| GI Tauri: Gaia EDR3 147790000749072768, 2MASS J04333405+2421170, GSC 01829-00082 | |
| Database references | |
| SIMBAD | data |
GK Tauri is a young T Tauri-type pre-main sequence star in the constellation of Taurus about 421 light years away, belonging to the Taurus Molecular Cloud.
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Bouvierwas invoked but never defined (see the help page). - ^ a b c d e Cite error: The named reference
EDR3was invoked but never defined (see the help page). - ^ a b c d e Cite error: The named reference
EDR3Brealwas invoked but never defined (see the help page). - ^ Cite error: The named reference
Marsh1993was invoked but never defined (see the help page). - ^ a b Cite error: The named reference
Pearce2020was invoked but never defined (see the help page). - ^ a b c d Braun, Teresa A. M.; Yen, Hsi-Wei; Koch, Patrick M.; Manara, Carlo F.; Miotello, Anna; Testi, Leonardo (2021), "Dynamical Stellar Masses of Pre-main-sequence Stars in Lupus and Taurus Obtained with ALMA Surveys in Comparison with Stellar Evolutionary Models", The Astrophysical Journal, 908 (1): 46, arXiv:2012.07441, Bibcode:2021ApJ...908...46B, doi:10.3847/1538-4357/abd24f, S2CID 229156020