SpaceAtlas Space Object Data
NASA JPL SBDB · 2026 KB3

2026 KB3

2026 KB3 is an Aten-type near-Earth asteroid whose orbit lies mostly inside that of Earth, with a semi-major axis of 0.908 AU and a period of 0.86 yr.

Aten Observations: 92
Orbital Period · P
0.86 yr
v(q)
39.6 km/s
v(Q)
24.7 km/s
Diameter · ≈
0.13 km
TJ
6.54
Eccentricity · e
0.2307

Orbit and dynamics

Between its closest point (0.698 AU) and its farthest (1.117 AU), the heliocentric distance changes by 0.419 AU over every revolution.

One full revolution takes 0.86 yr (316 days), computed from the semi-major axis of 0.908 AU.

An eccentricity of 0.231 makes the orbit moderately elongated.

The orbital plane is tilted 9.54° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 39.6 km/s at perihelion and falls to 24.7 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 = 22.18 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.13 km.

Observation record and orbit quality

Astrometry from 92 individual observations underpins this orbit; the fit leaves an RMS residual of 0.3863 arcseconds.

Condition code U = 5 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
0.9076 AU
Eccentricity
0.2307
Perihelion
0.698 AU
Aphelion
1.116983 AU
Inclination
9.54°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
152.42°

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
2033-Aug-13 14:14 0.160616 AU
24027802 km
11.20 km/s
2039-Jul-05 19:31 0.142691 AU
21346219 km
6.09 km/s
2052-Jul-21 09:16 0.109639 AU
16401811 km
6.13 km/s
2065-Jul-25 02:04 0.100510 AU
15036135 km
6.13 km/s
2078-Jul-28 22:58 0.080677 AU
12069127 km
6.16 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
22.18

Orbit Quality

RMS
0.38634
Condition
5
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.