Orbit and dynamics
Between its closest point (1.224 AU) and its farthest (3.296 AU), the heliocentric distance changes by 2.072 AU over every revolution.
One full revolution takes 3.40 yr (1,241 days), computed from the semi-major axis of 2.26 AU.
The high eccentricity (0.459) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.
A steep inclination of 29.18° carries it well above and below the ecliptic plane.
By the vis-viva equation its orbital speed rises to 32.5 km/s at perihelion and falls to 12.1 km/s at aphelion.
Its perihelion lies just outside Earth's orbit, which is why it is classed as Earth-approaching rather than Earth-crossing.
Size and surface
The measured diameter is 0.99 km, a value from direct size determination rather than from brightness alone.
Its geometric albedo of 0.02 indicates a very dark, carbonaceous-type surface.
Observation record and orbit quality
Astrometry from 56 individual observations underpins this orbit; the fit leaves an RMS residual of 0.4896 arcseconds.
Condition code U = 0 means the orbit is very well determined, leaving only a small uncertainty in the future ephemeris.
About these computed values
Orbital periods, perihelion and aphelion speeds, and diameter estimates on this page are computed by SpaceAtlas from the JPL SBDB orbital elements. They are derived quantities, not values copied from the source catalogue.
Orbital Parameters
Orbit diagram
The Sun sits at the focus (orange). Earth's orbit is the grey circle at 1 AU. The red dot marks the object's position at the catalog epoch.
3D orbit (interactive)
Drag to rotate; scroll or pinch to zoom. The Sun is at the focus (orange), Earth's orbit is the grey ring at 1 AU, and the red dot marks the object's current position.
Close approaches
Predicted close approaches to Earth, from NASA's Center for Near-Earth Object Studies (CNEOS).
| Date (UTC) | Miss distance | Velocity |
|---|---|---|
| 2048-Dec-12 16:09 | 0.493946 AU 73893256 km |
17.26 km/s |
| 2065-Dec-12 19:34 | 0.397713 AU 59497049 km |
16.64 km/s |
Distances in astronomical units (AU) and kilometres. Source: NASA/JPL CNEOS Close Approach Data API.
Physical Parameters
Orbit Quality
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