SpaceAtlas Space Object Data
NASA JPL SBDB · 2004 PB97

2004 PB97

2004 PB97 is an Amor-type near-Earth asteroid that approaches Earth from beyond our orbit without crossing it, orbiting the Sun at 1.235 AU once every 1.37 yr.

Amor Observations: 20
Orbital Period · P
1.37 yr
v(q)
31.6 km/s
v(Q)
22.7 km/s
Diameter · ≈
0.03 km
TJ
5.16
Eccentricity · e
0.163

Orbit and dynamics

Between its closest point (1.034 AU) and its farthest (1.436 AU), the heliocentric distance changes by 0.402 AU over every revolution.

One full revolution takes 1.37 yr (501 days), computed from the semi-major axis of 1.235 AU.

An eccentricity of 0.163 makes the orbit moderately elongated.

The orbital plane is tilted 10.97° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 31.6 km/s at perihelion and falls to 22.7 km/s at aphelion.

Its perihelion lies just outside Earth's orbit, which is why it is classed as Earth-approaching rather than Earth-crossing.

Size and surface

No direct size measurement is available; from an absolute magnitude of H = 25.3 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.03 km.

Observation record and orbit quality

Astrometry from 20 individual observations underpins this orbit; the fit leaves an RMS residual of 0.2815 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
1.235 AU
Eccentricity
0.163
Perihelion
1.034 AU
Aphelion
1.436305 AU
Inclination
10.97°
Orbital Period
— yr
Epoch
2453232.5
Mean Anomaly
16.03°

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
2078-Aug-19 20:55 0.028846 AU
4315250 km
7.87 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
25.3

Orbit Quality

RMS
0.28152
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.