Go to TNO Filter

This page provides predictions of stellar occultations by TNOs and Centaurs, as part of the efforts led by the Observatório Nacional/MCTIC and the Laboratório Interinstitucional de e-Astronomia (P.I’s.: R. Vieira-Martins and L. da Costa, Brazil), the Paris Observatory (P.I.: B. Sicardy, France), and the Instituto de Astrofísica de Andalucía (P.I.: J.-L. Ortiz, Spain). All objects considered here are those listed by the Johnston’s Archive (http://www.johnstonsarchive.net/astro/tnoslist.html, as last updated on 2016/SEP/05). Exception is made to Pluto and those objects that are presented as not having an MPC designation.

These maps are intended to provide a useful step to select those events on which a more careful work to refine their predictions is considered to be of interest. More accurate predictions to a smaller number of objects, as well as details on observational procedures and hints to observe an occultation event, can be obtained at J. Desmars’ page and at F. Braga-Ribas’ page.

Please, read the ReadMe file for details on the page and its contents.



Website design and maintenance:


Maps and Tables:

– They involve efforts from the three institutions mentioned above (Rio, Paris, and Granada teams). Emails can be sent to Julio Camargo (camargo@linea.gov.br)



– This work is funded by the LIneA, Observatório Nacional/MCTIC, and INCT do e-Universo.

– This work has made use of data from the European Space Agency (ESA) mission Gaia (https://www.cosmos.esa.int/gaia), processed by the Gaia Data Processing and Analysis Consortium (DPAC, https://www.cosmos.esa.int/web/gaia/dpac/consortium). Funding for the DPAC has been provided by national institutions, in particular the institutions participating in the Gaia Multilateral Agreement.

– This work has made use of the NAIF/SPICE softwares and scripts.

Acton, C.H.; “Ancillary Data Services of NASA’s Navigation and Ancillary Information Facility;” Planetary and Space Science, Vol. 44, No. 1, pp. 65-70, 1996.

Charles Acton, Nathaniel Bachman, Boris Semenov, Edward Wright; A look toward the future in the handling of space science mission geometry; Planetary and Space Science (2017); DOI 10.1016/j.pss.2017.02.013

– This research has made use of the SIMBAD database, operated at CDS, Strasbourg, France

2000,A&AS,143,9 , “The SIMBAD astronomical database”, Wenger et al.

– The maps were built using PGPLOT routines in a code written by B. Sicardy (Paris Observatory).

– Special thanks to J. Giorgini (JPL – Pasadena – California) for his help with the SPICE/NAIF tools.