Orbit and dynamics
The path is an ellipse reaching 0.575 AU from the Sun at perihelion and 4.561 AU at aphelion, a radial span of 3.986 AU.
Applying Kepler's third law to a = 2.568 AU gives an orbital period of 4.12 yr, or about 1,503 days.
The high eccentricity (0.776) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.
The orbital plane is tilted 11.48° relative to the ecliptic.
By the vis-viva equation its orbital speed rises to 52.3 km/s at perihelion and falls to 6.6 km/s at aphelion.
Because q < 1 AU and Q > 1 AU, this orbit geometrically intersects the region of Earth's orbit.
Its Tisserand parameter with respect to Jupiter is T_J = 2.89, a standard discriminator between asteroidal and cometary dynamics.
Size and surface
Neither a measured diameter nor a reliable absolute magnitude is available for SOHO, so its physical size remains unconstrained.
Observation record and orbit quality
The current orbit solution is based on 491 observations and has a weighted RMS residual of 0.3475 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 |
|---|---|---|
| 2028-Jul-17 04:52 | 0.305325 AU 45675905 km |
30.31 km/s |
| 2032-Nov-01 09:55 | 0.399611 AU 59781019 km |
21.52 km/s |
| 2053-Aug-12 18:36 | 0.165822 AU 24806594 km |
19.50 km/s |
| 2058-Jan-02 03:10 | 0.258188 AU 38624413 km |
16.05 km/s |
| 2078-Aug-17 22:43 | 0.225974 AU 33805165 km |
18.28 km/s |
Distances in astronomical units (AU) and kilometres. Source: NASA/JPL CNEOS Close Approach Data API.
Physical Parameters
Orbit Quality
Related Objects
Same object type
Similar orbit
Keep exploring
Explore asteroids, comets and near-Earth objects with JPL orbital data.