SpaceAtlas Space Object Data
NASA JPL SBDB · 2024 SM

2024 SM

2024 SM belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 2.055 AU it takes 2.95 yr to circle the Sun.

Apollo Observations: 51
Orbital Period · P
2.95 yr
v(q)
36.4 km/s
v(Q)
11.8 km/s
Diameter · ≈
0.03 km
TJ
3.61
Eccentricity · e
0.5096

Orbit and dynamics

The path is an ellipse reaching 1.008 AU from the Sun at perihelion and 3.102 AU at aphelion, a radial span of 2.094 AU.

Applying Kepler's third law to a = 2.055 AU gives an orbital period of 2.95 yr, or about 1,076 days.

The high eccentricity (0.51) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

Its inclination of 0.77° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 36.4 km/s at perihelion and falls to 11.8 km/s at aphelion.

Size and surface

No direct size measurement is available; from an absolute magnitude of H = 25.48 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.03 km.

Observation record and orbit quality

The current orbit solution is based on 51 observations and has a weighted RMS residual of 0.7183 arcseconds.

Condition code U = 7 signals a poorly constrained orbit, so its future path should be treated as provisional.

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
2.055 AU
Eccentricity
0.5096
Perihelion
1.008 AU
Aphelion
3.102228 AU
Inclination
0.77°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
200.36°

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
2027-Aug-28 21:24 0.253002 AU
37848568 km
16.00 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
25.48

Orbit Quality

RMS
0.7183
Condition
7
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.

Keep exploring

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