SpaceAtlas Space Object Data
NASA JPL SBDB · 2025 PK2

2025 PK2

2025 PK2 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.1 AU it takes 1.15 yr to circle the Sun.

Apollo Observations: 21
Orbital Period · P
1.15 yr
v(q)
38.1 km/s
v(Q)
21.2 km/s
Diameter · ≈
0.09 km
TJ
5.6
Eccentricity · e
0.2854

Orbit and dynamics

Between its closest point (0.786 AU) and its farthest (1.414 AU), the heliocentric distance changes by 0.628 AU over every revolution.

One full revolution takes 1.15 yr (421 days), computed from the semi-major axis of 1.1 AU.

An eccentricity of 0.285 makes the orbit moderately elongated.

The orbital plane is tilted 9.69° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 38.1 km/s at perihelion and falls to 21.2 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 = 22.91 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.09 km.

Observation record and orbit quality

Astrometry from 21 individual observations underpins this orbit; the fit leaves an RMS residual of 0.8514 arcseconds.

Condition code U = 4 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
1.1 AU
Eccentricity
0.2854
Perihelion
0.786 AU
Aphelion
1.41394 AU
Inclination
9.69°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
157.03°

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
2034-Feb-07 21:52 0.175763 AU
26293845 km
8.20 km/s
2040-Nov-11 13:15 0.190458 AU
28492170 km
8.33 km/s
2049-Feb-22 16:44 0.166863 AU
24962353 km
7.72 km/s
2055-Nov-25 21:48 0.195786 AU
29289167 km
9.03 km/s
2064-Mar-08 12:31 0.163053 AU
24392329 km
8.25 km/s
2070-Dec-06 10:19 0.197905 AU
29606216 km
9.42 km/s
2079-Mar-15 17:09 0.168496 AU
25206626 km
9.29 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
22.91

Orbit Quality

RMS
0.85137
Condition
4
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.