| Minorplanet: | yes |
| (456938) | |
| Background: |
|
| Discovered: | 31 December 2007 |
| Mpc Name: | (456938) |
| Epoch: | 23 March 2018 (JD 2458200.5) |
| Uncertainty: | 0 |
| Observation Arc: | 8.10 yr (2,959 days) |
| Perihelion: | 0.5952 AU |
| Semimajor: | 1.5754 AU |
| Eccentricity: | 0.6222 |
| Period: | 1.98 yr (722 days) |
| Mean Motion: | / day |
| Inclination: | 6.2441° |
| Asc Node: | 102.42° |
| Arg Peri: | 265.73° |
| Moid: | 0.0047 AU (1.83 LD) |
| Venus Moid: | 0.0019 AU |
| Mars Moid: | 0.0571 AU |
| Mean Diameter: | |
| Abs Magnitude: | 21.0 |
, provisional designation, is a sub-kilometer asteroid on an eccentric orbit, classified as a near-Earth object and potentially hazardous asteroid of the Apollo group, approximately 190- in diameter. It was discovered on 31 December 2007, by astronomers of the Catalina Sky Survey conducted at the Catalina Station in Arizona, United States.
is an Apollo asteroid that crosses the orbit of Earth. Apollo's are the largest group of near-Earth objects with nearly 10 thousand known members.
It orbits the Sun at a distance of 0.60–2.55 AU once every 2 years (722 days; semi-major axis of 1.58 AU). Its orbit has a high eccentricity of 0.62 and an inclination of 6° with respect to the ecliptic. This makes it also a Mars-crossing asteroid, as it crosses the orbit of the Red Planet at 1.66 AU, as well as a Venus-crosser due to its aphelion of less than 0.71 AU. The body's observation arc begins at Catalina with its official discovery observation in December 2007.
has a minimum orbital intersection distance (MOID) with Earth of 0.0047AU, which corresponds to 1.83 lunar distances (LD). It has an absolute magnitude of 21.0. This makes it a potentially hazardous asteroid, which are defined as having a MOID of less than 0.05AU and an absolute magnitude brighter than 22. Besides Earth, it also makes close approaches to Venus, Mars and the Moon.
On 26 December 2007, five days prior to its discovery observation, it passed Earth at a nominal distance of 0.10037AU. On 2 January 2101, it is predicted to flyby Earth at 0.00159AU and pass the Moon at a similar distance five hours earlier as well (also see).
The body's spectral type is unknown. Near-Earth asteroids are often of a stony composition.
Based on a generic magnitude-to-diameter conversion, measures 190- in diameter, for an absolute magnitude of 21.0, and an assumed albedo of 0.20 and 0.057, which represent typical values for stony and carbonaceous asteroids, respectively.
As of 2018, no rotational lightcurve of has been obtained from photometric observations. The body's rotation period, pole and shape remain unknown.
This minor planet was numbered by the Minor Planet Center on 22 February 2016 . As of 2018, it has not been named.