SpaceAtlas Space Object Data
NASA JPL SBDB · 2025 AC

2025 AC

2025 AC belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.166 AU it takes 1.26 yr to circle the Sun.

Apollo Observations: 50
Orbital Period · P
1.26 yr
v(q)
32.9 km/s
v(Q)
23.1 km/s
Diameter · ≈
0.01 km
TJ
5.39
Eccentricity · e
0.1759

Orbit and dynamics

Between its closest point (0.961 AU) and its farthest (1.371 AU), the heliocentric distance changes by 0.41 AU over every revolution.

One full revolution takes 1.26 yr (460 days), computed from the semi-major axis of 1.166 AU.

An eccentricity of 0.176 makes the orbit moderately elongated.

Its inclination of 2.61° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 32.9 km/s at perihelion and falls to 23.1 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 = 29.02 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.01 km.

Observation record and orbit quality

Astrometry from 50 individual observations underpins this orbit; the fit leaves an RMS residual of 0.5386 arcseconds.

Condition code U = 4 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
1.166 AU
Eccentricity
0.1759
Perihelion
0.961 AU
Aphelion
1.371099 AU
Inclination
2.61°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
26.23°

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
2030-Mar-31 12:47 0.106725 AU
15965898 km
6.30 km/s
2053-Dec-18 11:49 0.099731 AU
14919529 km
6.59 km/s
2059-Mar-10 06:55 0.042260 AU
6322017 km
3.26 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
29.02

Orbit Quality

RMS
0.53856
Condition
4
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.