SpaceAtlas Space Object Data
NASA JPL SBDB · 2025 DB3

2025 DB3

2025 DB3 is an Aten-type near-Earth asteroid whose orbit lies mostly inside that of Earth, with a semi-major axis of 0.78 AU and a period of 0.69 yr.

Aten Observations: 54
Orbital Period · P
0.69 yr
v(q)
45.5 km/s
v(Q)
25 km/s
Diameter · ≈
0.01 km
TJ
7.41
Eccentricity · e
0.2911

Orbit and dynamics

The path is an ellipse reaching 0.553 AU from the Sun at perihelion and 1.007 AU at aphelion, a radial span of 0.454 AU.

Applying Kepler's third law to a = 0.78 AU gives an orbital period of 0.69 yr, or about 252 days.

An eccentricity of 0.291 makes the orbit moderately elongated.

Its inclination of 1.3° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 45.5 km/s at perihelion and falls to 25 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 = 27.2 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 54 observations and has a weighted RMS residual of 0.5391 arcseconds.

Condition code U = 6 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
0.78 AU
Eccentricity
0.2911
Perihelion
0.553 AU
Aphelion
1.007058 AU
Inclination
1.3°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
122.16°

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
2034-Mar-25 18:35 0.145717 AU
21798934 km
11.02 km/s
2036-Feb-02 20:14 0.064495 AU
9648371 km
8.29 km/s
2045-Mar-22 15:31 0.034144 AU
5107837 km
6.70 km/s
2047-Feb-03 19:35 0.192386 AU
28780550 km
12.10 km/s
2056-Mar-20 12:06 0.011837 AU
1770772 km
6.23 km/s
2058-Feb-03 19:43 0.157958 AU
23630156 km
11.63 km/s
2067-Mar-26 15:40 0.111226 AU
16639225 km
9.44 km/s
2069-Feb-02 21:56 0.085608 AU
12806737 km
8.52 km/s
2078-Mar-25 21:09 0.157868 AU
23616698 km
11.47 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
27.2

Orbit Quality

RMS
0.53907
Condition
6
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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