SpaceAtlas Space Object Data
NASA JPL SBDB · 2025 DM3

2025 DM3

2025 DM3 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.153 AU it takes 1.24 yr to circle the Sun.

Apollo Observations: 87
Orbital Period · P
1.24 yr
v(q)
32.2 km/s
v(Q)
23.9 km/s
Diameter · ≈
0.05 km
TJ
5.39
Eccentricity · e
0.1482

Orbit and dynamics

Between its closest point (0.982 AU) and its farthest (1.324 AU), the heliocentric distance changes by 0.342 AU over every revolution.

One full revolution takes 1.24 yr (452 days), computed from the semi-major axis of 1.153 AU.

An eccentricity of 0.148 makes the orbit moderately elongated.

The orbital plane is tilted 19.36° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 32.2 km/s at perihelion and falls to 23.9 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 = 24.17 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.05 km.

Observation record and orbit quality

Astrometry from 87 individual observations underpins this orbit; the fit leaves an RMS residual of 0.4343 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
1.153 AU
Eccentricity
0.1482
Perihelion
0.982 AU
Aphelion
1.323875 AU
Inclination
19.36°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
320.59°

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
2051-Mar-10 21:42 0.088345 AU
13216166 km
11.85 km/s
2072-Mar-13 22:47 0.088266 AU
13204355 km
10.30 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
24.17

Orbit Quality

RMS
0.43427
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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