SpaceAtlas Space Object Data
NASA JPL SBDB · 2025 EB4

2025 EB4

2025 EB4 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.491 AU it takes 1.82 yr to circle the Sun.

Apollo Observations: 36
Orbital Period · P
1.82 yr
v(q)
53.7 km/s
v(Q)
11.1 km/s
Diameter · ≈
0.13 km
TJ
4.29
Eccentricity · e
0.6578

Orbit and dynamics

The path is an ellipse reaching 0.51 AU from the Sun at perihelion and 2.472 AU at aphelion, a radial span of 1.962 AU.

Applying Kepler's third law to a = 1.491 AU gives an orbital period of 1.82 yr, or about 665 days.

The high eccentricity (0.658) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

The orbital plane is tilted 8.88° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 53.7 km/s at perihelion and falls to 11.1 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 = 22.14 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.13 km.

Observation record and orbit quality

The current orbit solution is based on 36 observations and has a weighted RMS residual of 0.453 arcseconds.

Condition code U = 3 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
1.491 AU
Eccentricity
0.6578
Perihelion
0.51 AU
Aphelion
2.47178 AU
Inclination
8.88°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
287.01°

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
2037-Aug-02 19:53 0.169007 AU
25283035 km
25.69 km/s
2057-Aug-06 09:55 0.102488 AU
15332056 km
23.64 km/s
2065-Feb-22 05:16 0.195101 AU
29186709 km
15.32 km/s
2077-Aug-09 16:05 0.047978 AU
7177346 km
21.84 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
22.14

Orbit Quality

RMS
0.45301
Condition
3
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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