SpaceAtlas Space Object Data
NASA JPL SBDB · 2024 JS3

2024 JS3

2024 JS3 is an Amor-type near-Earth asteroid that approaches Earth from beyond our orbit without crossing it, orbiting the Sun at 1.87 AU once every 2.56 yr.

Amor Observations: 40
Orbital Period · P
2.56 yr
v(q)
30.2 km/s
v(Q)
15.7 km/s
Diameter · ≈
0.22 km
TJ
3.8
Eccentricity · e
0.3161

Orbit and dynamics

The path is an ellipse reaching 1.279 AU from the Sun at perihelion and 2.461 AU at aphelion, a radial span of 1.182 AU.

Applying Kepler's third law to a = 1.87 AU gives an orbital period of 2.56 yr, or about 934 days.

An eccentricity of 0.316 makes the orbit moderately elongated.

A steep inclination of 26.82° carries it well above and below the ecliptic plane.

By the vis-viva equation its orbital speed rises to 30.2 km/s at perihelion and falls to 15.7 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

No direct size measurement is available; from an absolute magnitude of H = 21.07 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.22 km.

Observation record and orbit quality

The current orbit solution is based on 40 observations and has a weighted RMS residual of 0.4555 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

Semi-Major Axis
1.87 AU
Eccentricity
0.3161
Perihelion
1.279 AU
Aphelion
2.461107 AU
Inclination
26.82°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
252.12°

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 distanceVelocity
2042-Jun-11 17:51 0.457602 AU
68456311 km
15.46 km/s
2065-Jun-10 23:45 0.420918 AU
62968454 km
15.16 km/s

Distances in astronomical units (AU) and kilometres. Source: NASA/JPL CNEOS Close Approach Data API.

Physical Parameters

Diameter
— km
Albedo
—
Density
— g/cm³
Rotation Period
— h
Absolute Magnitude
21.07

Orbit Quality

RMS
0.45545
Condition
6
Orbit ID
—
Data source: NASA JPL Small-Body Database · NASA CNEOS. 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.

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