SpaceAtlas Space Object Data
NASA JPL SBDB · 2002 PB

2002 PB

2002 PB belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.072 AU it takes 1.11 yr to circle the Sun.

Apollo Observations: 116
Orbital Period · P
1.11 yr
v(q)
41.1 km/s
v(Q)
20.1 km/s
Diameter · ≈
0.27 km
TJ
5.57
Eccentricity · e
0.3435

Orbit and dynamics

The path is an ellipse reaching 0.704 AU from the Sun at perihelion and 1.44 AU at aphelion, a radial span of 0.736 AU.

Applying Kepler's third law to a = 1.072 AU gives an orbital period of 1.11 yr, or about 405 days.

An eccentricity of 0.344 makes the orbit moderately elongated.

A steep inclination of 32.95° carries it well above and below the ecliptic plane.

By the vis-viva equation its orbital speed rises to 41.1 km/s at perihelion and falls to 20.1 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 = 20.63 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.27 km.

Observation record and orbit quality

The current orbit solution is based on 116 observations and has a weighted RMS residual of 0.6493 arcseconds.

Condition code U = 0 means the orbit is very well determined, leaving only a small uncertainty in the future ephemeris.

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
1.072 AU
Eccentricity
0.3435
Perihelion
0.704 AU
Aphelion
1.440232 AU
Inclination
32.95°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
259.44°

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

No close approaches to Earth are currently on record for this object.

Physical Parameters

Diameter
— km
Albedo
—
Density
— g/cm³
Rotation Period
— h
Absolute Magnitude
20.63

Orbit Quality

RMS
0.64932
Condition
0
Orbit ID
—
Data source: NASA JPL Small-Body Database . 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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