SpaceAtlas Space Object Data
NASA JPL SBDB · 2024 RJ2

2024 RJ2

2024 RJ2 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.598 AU it takes 2.02 yr to circle the Sun.

Apollo Observations: 134
Orbital Period · P
2.02 yr
v(q)
35.1 km/s
v(Q)
15.8 km/s
Diameter · ≈
0.07 km
TJ
4.18
Eccentricity · e
0.378

Orbit and dynamics

The path is an ellipse reaching 0.994 AU from the Sun at perihelion and 2.202 AU at aphelion, a radial span of 1.208 AU.

Applying Kepler's third law to a = 1.598 AU gives an orbital period of 2.02 yr, or about 738 days.

An eccentricity of 0.378 makes the orbit moderately elongated.

A steep inclination of 26.45° carries it well above and below the ecliptic plane.

By the vis-viva equation its orbital speed rises to 35.1 km/s at perihelion and falls to 15.8 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 = 23.53 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.07 km.

Observation record and orbit quality

The current orbit solution is based on 134 observations and has a weighted RMS residual of 0.4633 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
1.598 AU
Eccentricity
0.378
Perihelion
0.994 AU
Aphelion
2.202044 AU
Inclination
26.45°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
326.24°

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
2028-Sep-18 21:40 0.158717 AU
23743687 km
19.80 km/s
2030-Sep-25 21:30 0.241613 AU
36144821 km
22.48 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
23.53

Orbit Quality

RMS
0.46331
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.

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