SpaceAtlas Space Object Data
NASA JPL SBDB · 2025 WM3

2025 WM3

2025 WM3 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.142 AU it takes 1.22 yr to circle the Sun.

Apollo Observations: 28
Orbital Period · P
1.22 yr
v(q)
38.9 km/s
v(Q)
20 km/s
Diameter · ≈
0.03 km
TJ
5.42
Eccentricity · e
0.3213

Orbit and dynamics

The path is an ellipse reaching 0.775 AU from the Sun at perihelion and 1.509 AU at aphelion, a radial span of 0.734 AU.

Applying Kepler's third law to a = 1.142 AU gives an orbital period of 1.22 yr, or about 446 days.

An eccentricity of 0.321 makes the orbit moderately elongated.

The orbital plane is tilted 12.4° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 38.9 km/s at perihelion and falls to 20 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 = 25.63 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.03 km.

Observation record and orbit quality

The current orbit solution is based on 28 observations and has a weighted RMS residual of 0.5844 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
1.142 AU
Eccentricity
0.3213
Perihelion
0.775 AU
Aphelion
1.508925 AU
Inclination
12.4°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
99.1°

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
2032-May-18 02:04 0.081871 AU
12247705 km
8.32 km/s
2036-Dec-01 20:29 0.028739 AU
4299272 km
12.68 km/s
2060-Jun-06 10:13 0.108464 AU
16225995 km
16.10 km/s
2071-Jun-01 06:45 0.000579 AU
86646 km
12.95 km/s
2075-Dec-10 01:20 0.108080 AU
16168521 km
8.03 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
25.63

Orbit Quality

RMS
0.58438
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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