Orbit and dynamics
Between its closest point (0.541 AU) and its farthest (1.175 AU), the heliocentric distance changes by 0.634 AU over every revolution.
One full revolution takes 0.79 yr (290 days), computed from the semi-major axis of 0.858 AU.
An eccentricity of 0.37 makes the orbit moderately elongated.
The orbital plane is tilted 16.6° relative to the ecliptic.
By the vis-viva equation its orbital speed rises to 47.4 km/s at perihelion and falls to 21.8 km/s at aphelion.
Because q < 1 AU and Q > 1 AU, this orbit geometrically intersects the region of Earth's orbit.
Size and surface
The measured diameter is 1.03 km, a value from direct size determination rather than from brightness alone.
A geometric albedo of 0.455 points to a comparatively bright, reflective surface.
Observation record and orbit quality
Astrometry from 1,576 individual observations underpins this orbit; the fit leaves an RMS residual of 0.4755 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 |
|---|---|---|
| 2038-Apr-22 23:48 | 0.165618 AU 24776141 km |
12.35 km/s |
| 2042-Apr-13 17:10 | 0.174507 AU 26105811 km |
15.90 km/s |
| 2052-Dec-13 02:54 | 0.170894 AU 25565434 km |
13.12 km/s |
| 2069-Apr-19 20:07 | 0.154320 AU 23086016 km |
13.25 km/s |
| 2079-Dec-20 03:08 | 0.177441 AU 26544807 km |
15.24 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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