2018 stellar Occultations by TNOs, Centaurs and Trojans:

Campaigns

This page will migrate to:

http://lesia.obspm.fr/lucky-star/campaigns/

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 page (last update on 17/April/2018). If you can observe (or know who can) any of these occultations, please contact us(ribas-at-on.br or bruno.sicardy-at-obspm.fr).

Information about the predictions can be found in Lucky Star project web page and in Assafin et al. 2010 (for Pluto system predictions), Assafin et 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.
Visit http://occresults.ga/ for all the results on TNO and Centaur occultations obtained so far.

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!):
- The straight and continue lines are the shadow limits considering the estimated radius;

- 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 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.

2018

January February March April May June July August September October November December

April

Date	Object	Star R magnitude	Other information
04/04	Bienor	14.8
05/04	Quaoar	16.5
07/04	Ixion	14
13/04	2002 MS4	15.3
14/04	Huya	14.2
28/04	2002 MS4	16.4	click for more information

May

Date	Object	Star R magnitude	Map	Other information
06/05	Ixion	13.4
08/05	Astyanax	9.5		Jupiter Trojan Bright star!
10/05	2002 KX14	14.6
			more events soon...

Web page created and maintained by

Felipe Braga Ribas