HV 11417
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Tucana |
| Right ascension | 01h 00m 48.17s |
| Declination | −72° 51′ 02.1″ |
| Apparent magnitude (V) | 19.83 |
| Characteristics | |
| Evolutionary stage | M-type supergiant, Thorne–Żytkow object? |
| Spectral type | M5Ie |
| Astrometry | |
| Proper motion (μ) | RA: +0.593 mas/yr Dec.: −1.282 mas/yr |
| Distance | ~60,000 pc |
| Details | |
| Mass | 18.4 M☉ |
| Radius | 800 R☉ |
| Luminosity | 81,283 L☉ |
| Surface gravity (log g) | 0.47 cgs |
| Temperature | 3,450 K |
| Other designations | |
| HV 11417, PMMR 113, TIC 182293383 | |
| Database references | |
| SIMBAD | data |
HV 11417 is a candidate Thorne–Żytkow object in the Small Magellanic Cloud, put forward in a paper by Emma Beasor and collaborators. The paper also claims that another candidate for the Thorne–Żytkow object, HV 2112, was not a Thorne–Żytkow object because it seemingly lacked any distinguishing quality which would indicate that classification. It has since been reported that HV 11417 may be a foreground halo star. As of Gaia's 3rd data release the star has been measured to have a negative parallax, suggesting a distance of more than 103,000 light-years (32,000 pc) at the 3-sigma level, and a proper motion consistent with Small Magellanic Cloud stars in its region of the galaxy.