Orbit and dynamics
Between its closest point (1.152 AU) and its farthest (2.288 AU), the heliocentric distance changes by 1.136 AU over every revolution.
One full revolution takes 2.26 yr (824 days), computed from the semi-major axis of 1.72 AU.
An eccentricity of 0.33 makes the orbit moderately elongated.
The orbital plane is tilted 10.12° relative to the ecliptic.
By the vis-viva equation its orbital speed rises to 32 km/s at perihelion and falls to 16.1 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 1.72 km, a value from direct size determination rather than from brightness alone.
Its geometric albedo of 0.05 indicates a very dark, carbonaceous-type surface.
Observation record and orbit quality
Astrometry from 872 individual observations underpins this orbit; the fit leaves an RMS residual of 0.4454 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
No close approaches to Earth are currently on record for this object.
Physical Parameters
Orbit Quality
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