2016 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 10/Aug/2016). 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).

More information about the predictions can be found in Bruno Sicardy's 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. Some predictions 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. 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.

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.
- For Pluto and  Charon, the error is about 800km, and for the other TNOs it can be as big as 3000km.
- The star R* and K* are the R and K magnitudes, normalized to a body moving at 20km/s.

- The body offset is at the upper left corner, if JPL ephemeris is used.
- 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.


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

Date Object Star R magnitude Map Other information
14/07 Pluto
R= 16.1
K= 14.1
2016-07-14-01.237_WFIapr16_od100_plu100_Pluto.jpg Positive
16/07 Chariklo
R= 16 2016-07-16-20.601_NIMAapr16_Chariklo.jpg
19/07 Pluto
R= 14.1
K= 10.8
2016-07-19-20.850_WFIapr16_od100_plu100_Pluto.jpg Positive
20/07 Chariklo R= 13.0 2016-07-20-16.569_NIMAapr16_Chariklo.jpg
22/07 Chariklo
R= 15.5 2016-07-22-12.282_NIMAapr16_Chariklo.jpg
R= 14.2
WFI star position Apr 2016 and NIMA June 2016:

More information can be found on >_RECON web page_<

23/07 Weywot
R= 14.2 2016-07-23_QuaoarWeywot/2016-07-23-05.056_Weywot.jpg Occultation by Quaoar's satellite Weywot, about 15 minutes before, maximum duration ~4 sec!

WFI star position Apr 2016 and IMCCE+NIMA June 2016.

The uncertainties are quite big, so even if the prediction shows the shadow path off Earth, please do observe the satellite occultation too!

25/07 Amycus
R= 12.6 2016-07-25-19.220_Amycus.jpg
25/07 Chariklo
R= 14.5 2016-07-25-23.976_NIMAapr16_Chariklo.jpg
27/07 Chariklo R= 16.7 2016-07-27-06.028_NIMAapr16_Chariklo.jpg
28/07 Bienor
R= 17.0 2016-07-28T12h03m49s_BIENOR.jpg
29/07 Amycus
R= 16.2 2016-07-29T08h14m47s_AMYCUS.jpg
30/07 Chariklo
R= 16.7 2016-07-30-02.705_NIMAapr16_Chariklo.jpg WFI star position Apr 2016:
30/07 Chariklo
R= 16.8 2016-07-30-11.308_NIMAapr16_Chariklo.jpg

Date Object Star R magnitude Map Other information
02/08 Amycus
R= 12.5
03/08 Chariklo
R= 14.3 2016-07-16-20.601_NIMAapr16_Chariklo.jpg
08/08 Chariklo
R= 14.3
10/08 Chariklo R= 16.3 2016-08-10-14.395_WFIapr16_NIMA8_Chariklo.jpg Positive from Murrumbateman!
10/08 Chariklo
R= 16.7 2016-08-10-16.697_WFIapr16_NIMA8_Chariklo.jpg
R= 12.1

15/08 Chariklo
R= 15.5 2016-08-15-11.721_WFIapr16_NIMA8_Chariklo.jpg
Good chances of detection!

Under campaing
16/08 Sylvia
R= 12.1 2016-08-16_23h34_87_Sylvia.jpg 2016-08-16_23h34m00s_close_Sylvia
17/08 Ixion
R= 16.0 2016-08-17T09h37m42s_IXION.jpg
20/08 Chariklo R= 15.1 2016-08-20-14.060_WFIapr16_NIMA7_ck.jpg
20/08 Chariklo
R= 14.6 2016-08-20-16.766_WFIapr16_NIMA8_Chariklo.jpg
24/08 Chariklo
R= 13.1
30/08 2003 VS2
R= 13.3 2016-08-30T13h15m04s2003_VS2.jpg

Web page created and maintained by
 Felipe Braga Ribas