SpaceAtlas Space Object Data
NASA JPL SBDB · 2025 KB2

2025 KB2

2025 KB2 is an Aten-type near-Earth asteroid whose orbit lies mostly inside that of Earth, with a semi-major axis of 0.974 AU and a period of 0.96 yr.

Aten Observations: 19
Orbital Period · P
0.96 yr
v(q)
34.7 km/s
v(Q)
26.2 km/s
Diameter · ≈
0.02 km
TJ
6.2
Eccentricity · e
0.1404

Orbit and dynamics

Between its closest point (0.838 AU) and its farthest (1.111 AU), the heliocentric distance changes by 0.273 AU over every revolution.

One full revolution takes 0.96 yr (351 days), computed from the semi-major axis of 0.974 AU.

An eccentricity of 0.14 makes the orbit moderately elongated.

Its inclination of 3.23° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 34.7 km/s at perihelion and falls to 26.2 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 = 26.47 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.02 km.

Observation record and orbit quality

Astrometry from 19 individual observations underpins this orbit; the fit leaves an RMS residual of 0.5087 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
0.9744 AU
Eccentricity
0.1404
Perihelion
0.838 AU
Aphelion
1.111206 AU
Inclination
3.23°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
160.65°

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
2027-Sep-10 16:26 0.140408 AU
21004762 km
7.67 km/s
2050-Apr-24 06:49 0.018487 AU
2765552 km
4.39 km/s
2052-Sep-18 01:44 0.046122 AU
6899776 km
4.62 km/s
2077-Apr-24 05:13 0.017530 AU
2622407 km
4.81 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
26.47

Orbit Quality

RMS
0.5087
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

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