Langbahn Team – Weltmeisterschaft

HV 11417

HV 11417
Observation data
Epoch J2000      Equinox J2000
Constellation Tucana
Right ascension 01 h 00 m 48.2 s[1]
Declination −72°  51 ′  02.1 ″[1]
Apparent magnitude (V) 19.83[2]
Characteristics
Evolutionary stage M-type supergiant, Thorne-Żytkow object?
Spectral type M5Ie[2]
Astrometry
Proper motion (μ) RA: −0.307[2] mas/yr
Dec.: −1.769[2] mas/yr
Details
Radius673–798[citation needed] R
Luminosity74100[1] L
Other designations
HV 11417, PMMR 113, TIC 182293383[2]
Database references
SIMBADdata

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.[1] HV 11417 has since been identified as a likely foreground halo star.[3] As of Gaia's 3rd data release the star has been measured to have a negative measured 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.

References