Here you find predictions to
selected stellar occultations by TNOs/Centaurs, that are under
campaign. We will do our best to update the
prediction maps, so be alert for changes in this
update on 16/November/2017).
If you can observe (or know who can) any of these
occultations, please contact us(ribas-at-on.br
Information about the predictions can be found in Lucky
Star project web page and in Assafin
et al. 2010 (for Pluto system predictions), Assafin
al. 2012 (for the TNO predictions) and Camargo
et al. 2014 (for TNO and Centaur predictions). Please, do
references about the predictions to Assafin et al. 2010 and 2012 or
Camargo et al 2014 papers. Moste predictions here are done with our
own ephemeris, this is indicated on the top of the maps as NIMA ephem.
NIMA-ephemeris is calculated by Josselin Desmars and provided
by a numerical integration of the motion of the asteroid and by a fit
to asteroid's observations Desmars
et al. 2015. The observations come from Minor Planet Center and
our own observations made at ESO, Pic du Midi, Calar Alto, Sierra
Nevada and Observatorio
do Pico dos Dias.
Visit Bruno Sicardy's bibliogaphy
web page too see some of our publications.
We just entered on a new era for the
stellar occultations! With the Gaia DR1 catalogue, the prediction
errors are much smaller due to a accuracy of the star position and
due to re-reduction of the objects observations with the referred
catalogue associated with new orbit determinations.
Informations about the maps (please
read at least once!):
- Each red dot is spaced by one minute, the nominal occultation
time is to the big red dot
(that is the geocentric closest approach);
- The straight and continue lines are the shadow limits considering
the estimated radius;
- The arrow shows the direction of the shadow motion.
- The star R* and K* are the R and K magnitudes, normalized to a body
moving at 20km/s.
- Be careful, the dates are from the moment of the event in Universal
Time, the night of the event may
begin at the date before.