SpaceAtlas Space Object Data
NASA JPL SBDB · 2025 RL3

2025 RL3

2025 RL3 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.443 AU it takes 1.73 yr to circle the Sun.

Apollo Observations: 97
Orbital Period · P
1.73 yr
v(q)
82.3 km/s
v(Q)
7.5 km/s
Diameter · ≈
0.33 km
TJ
4.12
Eccentricity · e
0.8334

Orbit and dynamics

The path is an ellipse reaching 0.24 AU from the Sun at perihelion and 2.646 AU at aphelion, a radial span of 2.406 AU.

Applying Kepler's third law to a = 1.443 AU gives an orbital period of 1.73 yr, or about 633 days.

The high eccentricity (0.833) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

A steep inclination of 28.59° carries it well above and below the ecliptic plane.

By the vis-viva equation its orbital speed rises to 82.3 km/s at perihelion and falls to 7.5 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 = 20.13 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.33 km.

Observation record and orbit quality

The current orbit solution is based on 97 observations and has a weighted RMS residual of 0.4273 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
1.443 AU
Eccentricity
0.8334
Perihelion
0.24 AU
Aphelion
2.645596 AU
Inclination
28.59°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
176.47°

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
2051-Sep-09 09:19 0.136606 AU
20436023 km
33.75 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
20.13

Orbit Quality

RMS
0.4273
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

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