Orbit and dynamics
Between its closest point (0.964 AU) and its farthest (1.247 AU), the heliocentric distance changes by 0.283 AU over every revolution.
One full revolution takes 1.16 yr (425 days), computed from the semi-major axis of 1.106 AU.
An eccentricity of 0.128 makes the orbit moderately elongated.
Its inclination of 0.73° keeps it close to the plane of the ecliptic.
By the vis-viva equation its orbital speed rises to 32.2 km/s at perihelion and falls to 24.9 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
Neither a measured diameter nor a reliable absolute magnitude is available for 2020 YS2, so its physical size remains unconstrained.
Observation record and orbit quality
Astrometry from 24 individual observations underpins this orbit; the fit leaves an RMS residual of 0.4655 arcseconds.
Condition code U = 5 indicates a moderately constrained orbit; predictions decades ahead still carry noticeable uncertainty.
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 |
|---|---|---|
| 2027-Sep-16 14:50 | 0.048020 AU 7183636 km |
4.15 km/s |
| 2028-Feb-24 13:14 | 0.149280 AU 22332011 km |
2.66 km/s |
| 2034-Aug-26 03:11 | 0.366319 AU 54800519 km |
13.68 km/s |
| 2035-Apr-30 00:58 | 0.230331 AU 34456966 km |
4.50 km/s |
| 2042-Jun-25 12:27 | 0.191464 AU 28642622 km |
3.67 km/s |
| 2043-Jan-09 10:29 | 0.153035 AU 22893700 km |
7.86 km/s |
| 2049-Sep-22 02:03 | 0.012263 AU 1834548 km |
3.11 km/s |
| 2050-Feb-18 23:18 | 0.120785 AU 18069166 km |
2.22 km/s |
| 2064-Aug-24 13:22 | 0.327456 AU 48986782 km |
14.88 km/s |
| 2066-Jan-24 18:02 | 0.263354 AU 39397227 km |
15.12 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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