SpaceAtlas Space Object Data
NASA JPL SBDB · 2025 KF4

2025 KF4

2025 KF4 is an Aten-type near-Earth asteroid whose orbit lies mostly inside that of Earth, with a semi-major axis of 0.837 AU and a period of 0.77 yr.

Aten Observations: 20
Orbital Period · P
0.77 yr
v(q)
41.1 km/s
v(Q)
25.8 km/s
Diameter · ≈
0.01 km
TJ
6.99
Eccentricity · e
0.2288

Orbit and dynamics

The path is an ellipse reaching 0.646 AU from the Sun at perihelion and 1.029 AU at aphelion, a radial span of 0.383 AU.

Applying Kepler's third law to a = 0.837 AU gives an orbital period of 0.77 yr, or about 280 days.

An eccentricity of 0.229 makes the orbit moderately elongated.

The orbital plane is tilted 9.79° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 41.1 km/s at perihelion and falls to 25.8 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 = 28.7 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 20 observations and has a weighted RMS residual of 0.3361 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
0.8372 AU
Eccentricity
0.2288
Perihelion
0.646 AU
Aphelion
1.028751 AU
Inclination
9.79°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
283.14°

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
2035-Jun-26 11:15 0.159089 AU
23799305 km
8.41 km/s
2038-May-16 15:25 0.102582 AU
15345979 km
8.91 km/s
2048-Jun-12 08:30 0.074837 AU
11195406 km
6.24 km/s
2061-May-30 12:44 0.022419 AU
3353798 km
5.83 km/s
2074-May-30 08:48 0.016011 AU
2395166 km
5.84 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
28.7

Orbit Quality

RMS
0.33608
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.

Keep exploring

Explore asteroids, comets and near-Earth objects with JPL orbital data.