SpaceAtlas Space Object Data
NASA JPL SBDB · 2008 GP3

2008 GP3

2008 GP3 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.171 AU it takes 1.27 yr to circle the Sun.

Apollo Observations: 45
Orbital Period · P
1.27 yr
v(q)
41.6 km/s
v(Q)
18.2 km/s
Diameter · ≈
0.03 km
TJ
5.31
Eccentricity · e
0.3924

Orbit and dynamics

The path is an ellipse reaching 0.712 AU from the Sun at perihelion and 1.631 AU at aphelion, a radial span of 0.919 AU.

Applying Kepler's third law to a = 1.171 AU gives an orbital period of 1.27 yr, or about 463 days.

An eccentricity of 0.392 makes the orbit moderately elongated.

Its inclination of 4.35° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 41.6 km/s at perihelion and falls to 18.2 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 = 25.3 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.03 km.

Observation record and orbit quality

The current orbit solution is based on 45 observations and has a weighted RMS residual of 0.5892 arcseconds.

Condition code U = 7 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
1.171 AU
Eccentricity
0.3924
Perihelion
0.712 AU
Aphelion
1.6305 AU
Inclination
4.35°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
65.19°

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
2027-Apr-24 02:37 0.043214 AU
6464767 km
8.73 km/s
2032-Mar-04 17:59 0.461159 AU
68988341 km
9.61 km/s
2032-Jul-18 21:49 0.310453 AU
46443169 km
12.36 km/s
2032-Nov-30 10:14 0.461642 AU
69060728 km
9.60 km/s
2037-Oct-12 01:09 0.116291 AU
17396819 km
8.95 km/s
2041-Apr-05 10:18 0.176679 AU
26430756 km
18.21 km/s
2042-Nov-05 23:11 0.175365 AU
26234229 km
22.50 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
0.58917
Condition
7
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

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