2017 stellar Occultations by TNOs and Centaurs: 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 21/June/2017). 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.

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.

2017

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

June

Date	Object	Star R magnitude	Other information
03/06	2014MU69	15.4	http://www.boulder.swri.edu/ MU69_occ/june3.html KMZ file
05/06	Chariklo	17.7
08/06	Quaoar	17.7
13/06	Quaoar	17.4
18/06	Quaoar	17.4
22/06	Chariklo	14.2
23/06	Echeclus	13.6

July

Date	Object	Star R magnitude	Other information
01/07	Pluto	R = 15.3 K = 10.3
04/07	Ixion	17.2
06/07	Phoebe	10.2
07/07	Phoebe	14.8
07/07	Quaoar	16.2
10/07	Phoebe	16.6
10/07	2014MU69	15.6	http://www.boulder.swri.edu/ MU69_occ/july10.html KMZ File
17/07	2014MU69	12.8	http://www.boulder.swri.edu/ MU69_occ/july17.html KMZ File
17/07	Chariklo	16.8
23/07	Chariklo	13.9	[under campaign] KMZ File
25/07	Bienor	14.6
28/07	2002MS4	15.1
28/07	2002MS4	12.6

Web page created and maintained by

Felipe Braga Ribas