Tucana IV

Last updated
Tucana IV
Observation data
Constellation Tucana
Distance 156,555 ly
Group or cluster Milky Way subgroup
Characteristics
Type Dwarf galaxy
Notable featuresClose pass of the LMC

Tucana IV is an ultra-faint dwarf galaxy that is a satellite to the Milky Way galaxy. It lies at a distance of 48 kiloparsecs in the constellation of Tucana. It has a size of 127 parsecs. [1]

It passed within 4 kiloparsecs (possibly a collision event) with the Large Magellanic Cloud (LMC) approximately 120 million years ago. This close passage of the LMC altered the trajectory of the galaxy and its internal kinematics. [2]

Reference

  1. ↑ "Tucana IV". New Planetarium. Retrieved 2025-07-28.
  2. ↑ Simon, J. D.; Li, T. S.; Erkal, D.; Pace, A. B.; Drlica-Wagner, A.; James, D. J.; Marshall, J. L.; Bechtol, K.; Hansen, T. (2020-02-20), "Birds of a Feather? Magellan/IMACS Spectroscopy of the Ultra-faint Satellites Grus II, Tucana IV, and Tucana V", The Astrophysical Journal, 892 (2): 137, arXiv: 1911.08493 , Bibcode:2020ApJ...892..137S, doi: 10.3847/1538-4357/ab7ccb , retrieved 2025-07-28
This page is based on this Wikipedia article
Text is available under the CC BY-SA 4.0 license; additional terms may apply.
Images, videos and audio are available under their respective licenses.