Orbit and dynamics
The path is an ellipse reaching 0.867 AU from the Sun at perihelion and 1.365 AU at aphelion, a radial span of 0.498 AU.
Applying Kepler's third law to a = 1.116 AU gives an orbital period of 1.18 yr, or about 431 days.
An eccentricity of 0.224 makes the orbit moderately elongated.
Its inclination of 0.22° keeps it close to the plane of the ecliptic.
By the vis-viva equation its orbital speed rises to 35.4 km/s at perihelion and falls to 22.5 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 2019 YS, so its physical size remains unconstrained.
Observation record and orbit quality
The current orbit solution is based on 22 observations and has a weighted RMS residual of 0.4255 arcseconds.
Condition code U = 6 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 |
|---|---|---|
| 2032-May-20 12:29 | 0.283032 AU 42341038 km |
5.78 km/s |
| 2038-Jul-04 22:50 | 0.234978 AU 35152219 km |
14.05 km/s |
| 2039-Mar-31 11:13 | 0.363638 AU 54399427 km |
7.31 km/s |
| 2040-Jan-07 14:04 | 0.330523 AU 49445545 km |
17.20 km/s |
| 2046-Feb-05 21:25 | 0.241938 AU 36193396 km |
5.29 km/s |
| 2051-Jun-26 21:51 | 0.403801 AU 60407806 km |
19.07 km/s |
| 2052-Apr-16 20:59 | 0.355646 AU 53203830 km |
7.15 km/s |
| 2052-Dec-29 12:35 | 0.152929 AU 22877856 km |
11.90 km/s |
| 2058-Jul-26 16:41 | 0.013726 AU 2053386 km |
5.09 km/s |
| 2059-Feb-26 02:46 | 0.309304 AU 46271284 km |
6.47 km/s |
| 2065-Apr-24 03:06 | 0.346217 AU 51793333 km |
6.99 km/s |
| 2065-Dec-25 22:48 | 0.079221 AU 11851238 km |
9.94 km/s |
| 2072-Feb-23 04:08 | 0.284497 AU 42560096 km |
6.36 km/s |
| 2077-Jun-26 18:03 | 0.373077 AU 55811505 km |
19.00 km/s |
| 2078-Apr-15 01:30 | 0.360995 AU 54004029 km |
7.25 km/s |
| 2078-Dec-30 23:16 | 0.160343 AU 23987026 km |
12.97 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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