SpaceAtlas Space Object Data
NASA JPL SBDB · 2024 LD4

2024 LD4

2024 LD4 is an Amor-type near-Earth asteroid that approaches Earth from beyond our orbit without crossing it, orbiting the Sun at 1.47 AU once every 1.78 yr.

Amor Observations: 27
Orbital Period · P
1.78 yr
v(q)
32.4 km/s
v(Q)
18.6 km/s
Diameter · ≈
0.04 km
TJ
4.55
Eccentricity · e
0.2692

Orbit and dynamics

Between its closest point (1.074 AU) and its farthest (1.866 AU), the heliocentric distance changes by 0.792 AU over every revolution.

One full revolution takes 1.78 yr (651 days), computed from the semi-major axis of 1.47 AU.

An eccentricity of 0.269 makes the orbit moderately elongated.

The orbital plane is tilted 9.25° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 32.4 km/s at perihelion and falls to 18.6 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 = 24.77 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.04 km.

Observation record and orbit quality

Astrometry from 27 individual observations underpins this orbit; the fit leaves an RMS residual of 0.8119 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
1.47 AU
Eccentricity
0.2692
Perihelion
1.074 AU
Aphelion
1.865724 AU
Inclination
9.25°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
21.28°

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
2033-Oct-21 19:17 0.481267 AU
71996544 km
6.85 km/s
2049-Jun-07 08:54 0.244368 AU
36556942 km
13.05 km/s
2056-Aug-21 02:24 0.389860 AU
58322208 km
15.21 km/s
2065-Jun-17 00:40 0.062646 AU
9371648 km
7.80 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
24.77

Orbit Quality

RMS
0.81191
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.

Keep exploring

Explore asteroids, comets and near-Earth objects with JPL orbital data.