4 ms·
The primary source of the 3 magnitude dimming is this data: https://www.asteroidoccultation.com/2023_12/1212_319_82912_Summary.txt https://www.asteroidoccultati
by sapiogram 3y ago
The primary source of the 3 magnitude dimming is this data: https://www.asteroidoccultation.com/2023_12/1212_319_82912_Summary.txt https://www.asteroidoccultation.com/2023_12/1212_319_82912_S...
It seems to be based on a very crude estimation, see the data near the bottom. It estimates Betelgeuse to have an angular diameter of 48.10 milli-arcseconds, and the astroid's angular diameter to 46.0 milli-arcseconds, which works out to a 11.7 dimming factor.
- jessriedel 3y agoBut the summary there says this?: > In the case of an occultation, the combined light of the asteroid and the star will drop by 13.72 mag to 14.22 mag (the magnitude of the asteroid) for at most 11.620 seconds. Which suggest complete blockage of the star's light.