SpaceAtlas Space Object Data
NASA JPL SBDB · 2026 PR9

2026 PR9

2026 PR9 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.057 AU it takes 1.09 yr to circle the Sun.

Apollo Observations: 28
Orbital Period · P
1.09 yr
v(q)
36.9 km/s
v(Q)
22.8 km/s
Diameter · ≈
0.06 km
TJ
5.69
Eccentricity · e
0.2364

Orbit and dynamics

Between its closest point (0.807 AU) and its farthest (1.307 AU), the heliocentric distance changes by 0.5 AU over every revolution.

One full revolution takes 1.09 yr (397 days), computed from the semi-major axis of 1.057 AU.

An eccentricity of 0.236 makes the orbit moderately elongated.

A steep inclination of 28.59° carries it well above and below the ecliptic plane.

By the vis-viva equation its orbital speed rises to 36.9 km/s at perihelion and falls to 22.8 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 = 23.79 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.06 km.

Observation record and orbit quality

Astrometry from 28 individual observations underpins this orbit; the fit leaves an RMS residual of 0.6124 arcseconds.

Condition code U = 8 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
1.057 AU
Eccentricity
0.2364
Perihelion
0.807 AU
Aphelion
1.306875 AU
Inclination
28.59°
Orbital Period
— yr
Epoch
2461257.5
Mean Anomaly
269.16°

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
2028-Feb-01 16:49 0.083995 AU
12565418 km
16.38 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
23.79

Orbit Quality

RMS
0.61239
Condition
8
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.