Occultation of 4UC
the discovery of a ring system by Braga-Ribas, F. et
Nature 13155(2014) the upcoming occultation may draw your
attention. The object is of enormous interest for research.
Occultation astronomy is the most powerful technique to gain
further knowledge about this little ring system.
the 29th of April an occultation of a bright star (12th mag) will
take place for southern Africa.The event will be at
UTC for central occultation. The shadow will hit southern Africa
around 23h13min UTC.
mind, that the occultation has to be observed about 10 minutes
before and after, to ensure, that 1) enough data have been
collected for noise evaluation of your data set and 2) that
possible other rings (undetected up to now) may occult the star.
following finder charts are base on the UCAC4 catalog and the
reload this chart. It has been a wrong chart before!
Infos of the
occulted star you find here
of the Chariklos shadow track over the world:
Occultation track for the Chariklo event on the
prediction available for the moment: (B. Sicardy, F. Riba-Bragas
there are possible observatories involved in the campaign.
on the latest updates, B. Sicardy sent the following graphs, which
show the chords with respect to two different ring positions. The
upper one with the preferred ring pole position, and the lower on
with the alternative pole (see Braga-Ribas et al, Nature 2014)
show that if we get the rings with at least 2 chords, it will be
enough to discriminate between the two solutions.
maps are the latest updates 27th of April.