SpaceAtlas Space Object Data
NASA JPL SBDB · 2025 TO

2025 TO

2025 TO is an Aten-type near-Earth asteroid whose orbit lies mostly inside that of Earth, with a semi-major axis of 0.948 AU and a period of 0.92 yr.

Aten Observations: 22
Orbital Period · P
0.92 yr
v(q)
38.9 km/s
v(Q)
24.1 km/s
Diameter · ≈
0.01 km
TJ
6.32
Eccentricity · e
0.2358

Orbit and dynamics

The path is an ellipse reaching 0.724 AU from the Sun at perihelion and 1.172 AU at aphelion, a radial span of 0.448 AU.

Applying Kepler's third law to a = 0.948 AU gives an orbital period of 0.92 yr, or about 337 days.

An eccentricity of 0.236 makes the orbit moderately elongated.

Its inclination of 4.09° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 38.9 km/s at perihelion and falls to 24.1 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 = 28.05 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 22 observations and has a weighted RMS residual of 0.3672 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
0.948 AU
Eccentricity
0.2358
Perihelion
0.724 AU
Aphelion
1.171538 AU
Inclination
4.09°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
173.37°

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

No close approaches to Earth are currently on record for this object.

Physical Parameters

Diameter
— km
Albedo
—
Density
— g/cm³
Rotation Period
— h
Absolute Magnitude
28.05

Orbit Quality

RMS
0.36716
Condition
6
Orbit ID
—
Data source: NASA JPL Small-Body Database . 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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