SpaceAtlas Space Object Data
NASA JPL SBDB · 2024 TH

2024 TH

2024 TH is an Aten-type near-Earth asteroid whose orbit lies mostly inside that of Earth, with a semi-major axis of 0.893 AU and a period of 0.84 yr.

Aten Observations: 39
Orbital Period · P
0.84 yr
v(q)
40.2 km/s
v(Q)
24.7 km/s
Diameter · ≈
0.04 km
TJ
6.59
Eccentricity · e
0.2372

Orbit and dynamics

The path is an ellipse reaching 0.681 AU from the Sun at perihelion and 1.105 AU at aphelion, a radial span of 0.424 AU.

Applying Kepler's third law to a = 0.893 AU gives an orbital period of 0.84 yr, or about 308 days.

An eccentricity of 0.237 makes the orbit moderately elongated.

The orbital plane is tilted 19.2° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 40.2 km/s at perihelion and falls to 24.7 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

No direct size measurement is available; from an absolute magnitude of H = 24.58 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.04 km.

Observation record and orbit quality

The current orbit solution is based on 39 observations and has a weighted RMS residual of 0.3731 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

Semi-Major Axis
0.8933 AU
Eccentricity
0.2372
Perihelion
0.681 AU
Aphelion
1.105191 AU
Inclination
19.2°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
227.12°

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
2035-Oct-08 23:54 0.079936 AU
11958265 km
11.95 km/s
2051-Sep-30 07:14 0.130378 AU
19504324 km
10.05 km/s
2062-Oct-08 12:24 0.053736 AU
8038751 km
11.60 km/s
2078-Oct-04 03:08 0.083491 AU
12490058 km
10.18 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
24.58

Orbit Quality

RMS
0.37312
Condition
5
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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