Orbit and dynamics
The path is an ellipse reaching 1.087 AU from the Sun at perihelion and 1.951 AU at aphelion, a radial span of 0.864 AU.
Applying Kepler's third law to a = 1.519 AU gives an orbital period of 1.87 yr, or about 684 days.
An eccentricity of 0.285 makes the orbit moderately elongated.
A steep inclination of 40.68° carries it well above and below the ecliptic plane.
By the vis-viva equation its orbital speed rises to 32.4 km/s at perihelion and falls to 18 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 0.56 km, a value from direct size determination rather than from brightness alone.
Its geometric albedo of 0.039 indicates a very dark, carbonaceous-type surface.
Observation record and orbit quality
The current orbit solution is based on 63 observations and has a weighted RMS residual of 0.4198 arcseconds.
Condition code U = 1 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 |
|---|---|---|
| 2057-Sep-07 09:49 | 0.180109 AU 26943894 km |
22.65 km/s |
| 2072-Sep-04 21:52 | 0.125611 AU 18791169 km |
22.03 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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