2015 RX245

From Wikipedia, the free encyclopedia
Jump to navigation Jump to search
2015 RX245
Planet nine-etnos now-new2.png
The orbits of 2015 RX245 and other objects along with hypothetical Planet Nine
Discovery
Discovered by OSSOS
Discovery site Mauna Kea Obs.
Discovery date 8 September 2015
Designations
MPC designation 2015 RX245
o5t52
TNO, detached
Orbital characteristics
Epoch 2017 Sept. 4.0 TT = JDT 2458000.5
Observation arc 587 days (1.61 yr)
Earliest precovery date 23 June 2015
Aphelion 815 AU (barycentric)
Perihelion 45.48 AU
430 AU (barycentric)
Eccentricity 0.89
8,920 years
357.9°
0.00012°
Inclination 12.2°
8.6°
65.4°
Jupiter MOID 40.489 au
Physical characteristics
Dimensions 250km
24.2
6.2

2015 RX245, also known as o5t52, is a Kuiper belt object (KBO) discovered by the Outer Solar System Origins Survey using the Canada–France–Hawaii Telescope on 8 September 2015. Precovery images have been found back to June 23, 2015.

It is one of a small number of detached objects with perihelion distances of 30 AUs or more, and semi-major axes of 250 AU or more.[1] Such objects cannot reach such orbits without some perturber, which led to the speculations of Planet Nine.

It has a similar size and orbit as 2013 SY99, as well as close positions to each other at the moment, both about 60 AUs from the sun, seen here in the middle bottom.

References[edit]

External links[edit]