SpaceAtlas Space Object Data
NASA JPL SBDB · 2025 EP

2025 EP

2025 EP belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.543 AU it takes 1.92 yr to circle the Sun.

Apollo Observations: 85
Orbital Period · P
1.92 yr
v(q)
36.1 km/s
v(Q)
15.9 km/s
Diameter · ≈
0.15 km
TJ
4.35
Eccentricity · e
0.3882

Orbit and dynamics

Between its closest point (0.944 AU) and its farthest (2.142 AU), the heliocentric distance changes by 1.198 AU over every revolution.

One full revolution takes 1.92 yr (700 days), computed from the semi-major axis of 1.543 AU.

An eccentricity of 0.388 makes the orbit moderately elongated.

The orbital plane is tilted 14.04° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 36.1 km/s at perihelion and falls to 15.9 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 = 21.84 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.15 km.

Observation record and orbit quality

Astrometry from 85 individual observations underpins this orbit; the fit leaves an RMS residual of 0.4721 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
1.543 AU
Eccentricity
0.3882
Perihelion
0.944 AU
Aphelion
2.141993 AU
Inclination
14.04°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
212.43°

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
2048-Mar-13 07:35 0.112000 AU
16755028 km
13.56 km/s
2071-Mar-11 06:57 0.159526 AU
23864822 km
14.90 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
21.84

Orbit Quality

RMS
0.47214
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.