Orbit and dynamics
Between its closest point (2.563 AU) and its farthest (3.761 AU), the heliocentric distance changes by 1.198 AU over every revolution.
One full revolution takes 5.62 yr (2,054 days), computed from the semi-major axis of 3.162 AU.
An eccentricity of 0.189 makes the orbit moderately elongated.
The orbital plane is tilted 15.95° relative to the ecliptic.
By the vis-viva equation its orbital speed rises to 20.3 km/s at perihelion and falls to 13.8 km/s at aphelion.
Size and surface
The measured diameter is 270.3 km, a value from direct size determination rather than from brightness alone.
Its geometric albedo of 0.076 indicates a very dark, carbonaceous-type surface.
The rotation period is 5.13 h.
Observation record and orbit quality
Astrometry from 5,110 individual observations underpins this orbit; the fit leaves an RMS residual of 0.4315 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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