Printable Version of Topic

Click here to view this topic in its original format

Unmanned Spaceflight.com _ Telescopic Observations _ New dwarf planet! 2015 RR245

Posted by: Lucas Jul 12 2016, 02:48 AM

Press release from the Canada-France-Hawaii Telescope, http://www.cfht.hawaii.edu/en/news/NewDwarfPlanet/

QUOTE

An international team of astronomers have discovered a new dwarf planet orbiting in the disk of small icy worlds beyond Neptune. The new object is roughly 700 kilometers in size and has one of the largest orbits for a dwarf planet. Designated 2015 RR245 by the International Astronomical Union's Minor Planet Center, it was found using the Canada-France-Hawaii Telescope on Maunakea, Hawaii, as part of the ongoing Outer Solar System Origins Survey (OSSOS)."

Orbital elements from IAU MPC: http://www.minorplanetcenter.net/mpec/K16/K16N67.html

Posted by: Floyd Jul 12 2016, 11:25 AM

Large elliptical orbit 34 AU to 120 AU. About 700 years to complete orbit. Perihelion in 2096.

From link above:

Posted by: nprev Jul 15 2016, 07:11 AM

MOD NOTE: With the exception of the first two posts, the discussion has been less about 2015 RR245 per se than it has about a hypothesized undiscovered major planet. Accordingly, all other posts have been moved to the http://www.unmannedspaceflight.com/index.php?showtopic=8150&hl= that was created for that topic.

Posted by: alan Jul 26 2016, 04:07 PM

http://arxiv.org/abs/1607.06970

Posted by: JohnVV Jul 26 2016, 08:30 PM

for any interested , the orbital data for "2015 RR245" is in HORIZONS
The spice kernel is for only 201 years but at this point using just a single date for the orbit would work

see the spice section of Celestial matters forum