2010 RE64
Encyclopedia
, also written as 2010 RE64, is a trans-Neptunian object
with an absolute magnitude
of 4.2. It is very likely a dwarf planet
.
images to help refine the orbit. The orbit is poorly known. It is currently 55.8 AU
from the Sun. Based on JPL's best-fit
solution for the preliminary orbit, it just passed aphelion
in March 2010. It is estimated to come to perihelion
around 2165.
Assuming a generic trans-Neptunian albedo of 0.09, it is about 640 km in diameter. But since the true albedo is unknown and it has a preliminary absolute magnitude of 4.2, it could easily be from about 380 to 860 km in diameter.
Trans-Neptunian object
A trans-Neptunian object is any minor planet in the Solar System that orbits the Sun at a greater distance on average than Neptune.The first trans-Neptunian object to be discovered was Pluto in 1930...
with an absolute magnitude
Absolute magnitude
Absolute magnitude is the measure of a celestial object's intrinsic brightness. it is also the apparent magnitude a star would have if it were 32.6 light years away from Earth...
of 4.2. It is very likely a dwarf planet
Dwarf planet
A dwarf planet, as defined by the International Astronomical Union , is a celestial body orbiting the Sun that is massive enough to be spherical as a result of its own gravity but has not cleared its neighboring region of planetesimals and is not a satellite...
.
Preliminary
It has only been observed over a 29 day arc and there are currently no known precoveryPrecovery
Precovery is a term used in astronomy that describes the process of finding the image of an object in old archived images or photographic plates, for the purpose of calculating a more accurate orbit...
images to help refine the orbit. The orbit is poorly known. It is currently 55.8 AU
Astronomical unit
An astronomical unit is a unit of length equal to about or approximately the mean Earth–Sun distance....
from the Sun. Based on JPL's best-fit
Curve fitting
Curve fitting is the process of constructing a curve, or mathematical function, that has the best fit to a series of data points, possibly subject to constraints. Curve fitting can involve either interpolation, where an exact fit to the data is required, or smoothing, in which a "smooth" function...
solution for the preliminary orbit, it just passed aphelion
Apsis
An apsis , plural apsides , is the point of greatest or least distance of a body from one of the foci of its elliptical orbit. In modern celestial mechanics this focus is also the center of attraction, which is usually the center of mass of the system...
in March 2010. It is estimated to come to perihelion
Apsis
An apsis , plural apsides , is the point of greatest or least distance of a body from one of the foci of its elliptical orbit. In modern celestial mechanics this focus is also the center of attraction, which is usually the center of mass of the system...
around 2165.
Assuming a generic trans-Neptunian albedo of 0.09, it is about 640 km in diameter. But since the true albedo is unknown and it has a preliminary absolute magnitude of 4.2, it could easily be from about 380 to 860 km in diameter.
External links
- Orbital simulation from JPL (Java) / Horizons Ephemeris