V533 Herculis was a nova visible to the naked eye, which occurred in 1963 in the constellation of Hercules.

[7] Subsequent examination of pre-discovery images, taken by the Baker-Nunn satellite tracking group at the Tokyo Observatory, showed that the star had begun its nova event as early as 18:36 UT on 26 January 1963, when it had an magnitude of 8.

[10] Images of V533 Herculis taken with the Hubble Space Telescope show a faint, approximately circular shell (nebula) with a diameter of 10±1.4 arc seconds, surrounding the star.

[11] Santamaria et al. obtained similar results by comparing images of the shell taken in 1993 and 2018.

They found that by 2018 the slightly elliptical shell had major and minor axis of 16.8×15.2 arc seconds, and it was expanding at a rate of 0.152×0.139 arc seconds per year, implying a physical expansion rate of 850×770 km/sec.