SpaceAtlas Space Object Data
NASA JPL SBDB · 2025 EW

2025 EW

2025 EW belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.126 AU it takes 1.19 yr to circle the Sun.

Apollo Observations: 57
Orbital Period · P
1.19 yr
v(q)
31.8 km/s
v(Q)
24.8 km/s
Diameter · ≈
0.01 km
TJ
5.54
Eccentricity · e
0.123

Orbit and dynamics

The path is an ellipse reaching 0.987 AU from the Sun at perihelion and 1.264 AU at aphelion, a radial span of 0.277 AU.

Applying Kepler's third law to a = 1.126 AU gives an orbital period of 1.19 yr, or about 436 days.

An eccentricity of 0.123 makes the orbit moderately elongated.

Its inclination of 4.19° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 31.8 km/s at perihelion and falls to 24.8 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 = 27.25 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 57 observations and has a weighted RMS residual of 0.3928 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
1.126 AU
Eccentricity
0.123
Perihelion
0.987 AU
Aphelion
1.264498 AU
Inclination
4.19°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
8.16°

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
2031-Feb-10 09:56 0.156075 AU
23348560 km
7.19 km/s
2031-Jul-23 22:08 0.192269 AU
28762994 km
3.54 km/s
2056-May-18 15:34 0.188806 AU
28244962 km
7.53 km/s
2062-Apr-05 22:04 0.048472 AU
7251350 km
3.03 km/s
2068-Mar-12 06:46 0.016062 AU
2402912 km
2.96 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
27.25

Orbit Quality

RMS
0.39284
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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