SpaceAtlas Space Object Data
NASA JPL SBDB · 2026 PJ

2026 PJ

2026 PJ belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.335 AU it takes 1.54 yr to circle the Sun.

Apollo Observations: 141
Orbital Period · P
1.54 yr
v(q)
32.9 km/s
v(Q)
20.2 km/s
Diameter · ≈
0.02 km
TJ
4.88
Eccentricity · e
0.2388

Orbit and dynamics

Between its closest point (1.016 AU) and its farthest (1.654 AU), the heliocentric distance changes by 0.638 AU over every revolution.

One full revolution takes 1.54 yr (563 days), computed from the semi-major axis of 1.335 AU.

An eccentricity of 0.239 makes the orbit moderately elongated.

Its inclination of 3.74° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 32.9 km/s at perihelion and falls to 20.2 km/s at aphelion.

Size and surface

No direct size measurement is available; from an absolute magnitude of H = 26.15 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.02 km.

Observation record and orbit quality

Astrometry from 141 individual observations underpins this orbit; the fit leaves an RMS residual of 0.5035 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
1.335 AU
Eccentricity
0.2388
Perihelion
1.016 AU
Aphelion
1.653798 AU
Inclination
3.74°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
336.83°

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
2043-Aug-20 21:45 0.048090 AU
7194111 km
7.25 km/s
2057-May-29 10:34 0.169442 AU
25348134 km
9.52 km/s
2074-Jul-05 01:53 0.031022 AU
4640886 km
4.22 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
26.15

Orbit Quality

RMS
0.50346
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.

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