SpaceAtlas Space Object Data
NASA JPL SBDB · 2025 EP2

2025 EP2

2025 EP2 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.097 AU it takes 1.15 yr to circle the Sun.

Apollo Observations: 26
Orbital Period · P
1.15 yr
v(q)
40.3 km/s
v(Q)
20.1 km/s
Diameter · ≈
0.01 km
TJ
5.58
Eccentricity · e
0.3355

Orbit and dynamics

The path is an ellipse reaching 0.729 AU from the Sun at perihelion and 1.465 AU at aphelion, a radial span of 0.736 AU.

Applying Kepler's third law to a = 1.097 AU gives an orbital period of 1.15 yr, or about 420 days.

An eccentricity of 0.336 makes the orbit moderately elongated.

The orbital plane is tilted 16° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 40.3 km/s at perihelion and falls to 20.1 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 = 27.28 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.01 km.

Observation record and orbit quality

The current orbit solution is based on 26 observations and has a weighted RMS residual of 0.3094 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
1.097 AU
Eccentricity
0.3355
Perihelion
0.729 AU
Aphelion
1.465044 AU
Inclination
16.0°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
91.69°

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
2056-Mar-07 10:58 0.007804 AU
1167502 km
15.16 km/s
2077-Aug-31 15:43 0.029146 AU
4360117 km
12.41 km/s
2079-Mar-02 04:01 0.005685 AU
850493 km
11.99 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
27.28

Orbit Quality

RMS
0.30939
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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