Observation campaign of the mutual phenomena of Jupiter's satellites
Mutual events occur when the Earth and the Sun are crossing the common plane in which the satellites orbit. In the case of Jupiter's satellites, this configuration happens every 6 years.
Jupiter's equinox of 2021
Due to the passage of Jupiter at equinox in 2021, the observations of a series of eclipses and occultations between the galilean satellites will provide high quality data allowing to reach an unprecedented resolution in the satellites dynamical models. These observations are even accessible with personnal telescopes.
Jupiter's equinox of 2015
There were 442 observable events between september 1st, 2014 and july 20th, 2015. During this campaign (PHEMU15), 236 such phenomena were observed. One of them has been recorded by 17 different telescopes, and amateur astronomers transmitted more than 600 light curves.
The observer's guidebook
Interactive tools for the observers
- Visibility of the mutual eclipses and occultations of the Galilean satellites of Jupiter
- Visibility of the mutual eclipses and occulations of the internal satellites of Jupiter by the Galileans'
- Configurations and positions of the satellites of Jupiter
PHEMU Technical notes
- Technical note n°1 : Presentation of the Galilean satellites of Jupiter and of their mutual phenomena
- Technical note n°2 : Presentation of Saturn's and Uranus' satellites (in prep.)
- Technical note n°3 : The photometric observation of the mutual events
- Technical note n°4 : The observation of mutual events using a video camera
- Technical note n°5 : The observation of mutual events using a CCD camera
- Technical note n°6 : Examples of light curves
- Technical note n°7 : The visual observation of mutual phenomena
- Technical Note n°8 : Bibliography related to the mutual events of the Galilean satellites
- Technical Note n°9 : Bibliographic note about mutual events in the Saturn, Uranus and Pluto-Charon systems
Scientific and pedagogic documents
- Presentation of the satellites, the mutual phenomena and their observations (in french)
- Astrometry through photometry: Application to natural planetary satellites and Solar System objects (in english)
- Peer-reviewed article on the mutual events observed in 2015
Past colloquiums and workshops on the mutual events
- WETO 2014: Week-End Technique Occultations "Phénomènes mutuels", Paris 29 et 30 mars 2014
- Ecole d'astrométrie franco-chinoise, Pékin, Chine, 7-11 avril 2008.
Last update Tuesday 14 November 2017