- #1
- 21,955
- 6,434
"Nearly 1000 TNOs known to inhabit the outer Solar System have been discovered by OSSOS (or earlier CFEPS)." - OSSOS
http://www.ossos-survey.org/tnodb.html
"Started in February 2013, OSSOS is a four-year project using the MegaPrime camera, a 1x1 degree imager on the 3.6m Canada-France-Hawaii Telescope (CFHT). The repeated tracking observations required to determine orbits are also obtained with the MegaPrime camera." - OSSOS
http://www.ossos-survey.org/about.html
Space.com has just published an announcement of a new TNO - 2015 RR245.
http://www.space.com/33387-dwarf-planet-discovery-2015-rr245.html
https://en.wikipedia.org/wiki/2015_RR245
Not much information on 2015 RR245. Its orbital period is ~700 years. Perihelion ~34 AU (next ~ 2096), aphelion ~120 AU.
Back in 2011, Space.com published an article on Dwarf Planets.
Meet the Solar System's Dwarf Planets
http://www.space.com/12694-dwarf-planets-solar-system-tour-countdown.html
By Mike Wall, Space.com Senior Writer | October 26, 2011 02:00pm ET
In 2011, we had Pluto, Eris, Haumea, Makemake and Ceres
Styx was discovered 2012/06/26.
Still a lot of research to be accomplished out there.
http://www.ossos-survey.org/tnodb.html
"Started in February 2013, OSSOS is a four-year project using the MegaPrime camera, a 1x1 degree imager on the 3.6m Canada-France-Hawaii Telescope (CFHT). The repeated tracking observations required to determine orbits are also obtained with the MegaPrime camera." - OSSOS
http://www.ossos-survey.org/about.html
Space.com has just published an announcement of a new TNO - 2015 RR245.
http://www.space.com/33387-dwarf-planet-discovery-2015-rr245.html
https://en.wikipedia.org/wiki/2015_RR245
Not much information on 2015 RR245. Its orbital period is ~700 years. Perihelion ~34 AU (next ~ 2096), aphelion ~120 AU.
Back in 2011, Space.com published an article on Dwarf Planets.
Meet the Solar System's Dwarf Planets
http://www.space.com/12694-dwarf-planets-solar-system-tour-countdown.html
By Mike Wall, Space.com Senior Writer | October 26, 2011 02:00pm ET
In 2011, we had Pluto, Eris, Haumea, Makemake and Ceres
By 2012, it was determined that Pluto has 5 moons: Charon, Styx, Nix, Kerberos, and Hydra.Caltech astronomer Mike Brown led the team that discovered Eris in 2005. The find spurred the IAU to strip Pluto of its planethood and create the "dwarf planet" category a year later.
Ceres is the only dwarf planet not found in the freezing cold, faraway Kuiper Belt.
Makemake is the second-brightest Kuiper Belt object (after Pluto)
Haumea has two known moons, Hi'iaka and Namaka
Eris has one known moon, Dysnomia
Pluto has four known moons: Charon, Nix, Hydra and a newly discovered tiny satellite currently called P4
Styx was discovered 2012/06/26.
Still a lot of research to be accomplished out there.