SpaceAtlas Space Object Data
NASA JPL SBDB · 2026 JB2

2026 JB2

2026 JB2 is an Aten-type near-Earth asteroid whose orbit lies mostly inside that of Earth, with a semi-major axis of 0.612 AU and a period of 0.48 yr.

Aten Observations: 9
Orbital Period · P
0.48 yr
v(q)
93.5 km/s
v(Q)
15.5 km/s
Diameter · ≈
0.02 km
TJ
8.98
Eccentricity · e
0.7159

Orbit and dynamics

The path is an ellipse reaching 0.174 AU from the Sun at perihelion and 1.05 AU at aphelion, a radial span of 0.876 AU.

Applying Kepler's third law to a = 0.612 AU gives an orbital period of 0.48 yr, or about 175 days.

The high eccentricity (0.716) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

The orbital plane is tilted 7.29° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 93.5 km/s at perihelion and falls to 15.5 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 = 26.52 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.02 km.

Observation record and orbit quality

The current orbit solution is based on 9 observations and has a weighted RMS residual of 0.6453 arcseconds.

Condition code U = 9 signals a poorly constrained orbit, so its future path should be treated as provisional.

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
0.6122 AU
Eccentricity
0.7159
Perihelion
0.174 AU
Aphelion
1.050474 AU
Inclination
7.29°
Orbital Period
— yr
Epoch
2461162.5
Mean Anomaly
136.69°

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-May-17 06:00 0.046646 AU
6978191 km
14.29 km/s
2028-May-25 06:24 0.046743 AU
6992617 km
17.80 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
26.52

Orbit Quality

RMS
0.6453
Condition
9
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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