SpaceAtlas Space Object Data
NASA JPL SBDB · 2018 GE5

2018 GE5

2018 GE5 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.487 AU it takes 1.81 yr to circle the Sun.

Apollo Observations: 35
Orbital Period · P
1.81 yr
v(q)
37 km/s
v(Q)
16.1 km/s
Diameter · ≈
0.07 km
TJ
4.45
Eccentricity · e
0.3926

Orbit and dynamics

The path is an ellipse reaching 0.903 AU from the Sun at perihelion and 2.071 AU at aphelion, a radial span of 1.168 AU.

Applying Kepler's third law to a = 1.487 AU gives an orbital period of 1.81 yr, or about 662 days.

An eccentricity of 0.393 makes the orbit moderately elongated.

The orbital plane is tilted 15.74° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 37 km/s at perihelion and falls to 16.1 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 = 23.5 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.07 km.

Observation record and orbit quality

The current orbit solution is based on 35 observations and has a weighted RMS residual of 0.4032 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
1.487 AU
Eccentricity
0.3926
Perihelion
0.903 AU
Aphelion
2.070796 AU
Inclination
15.74°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
208.22°

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-May-01 18:45 0.229111 AU
34274567 km
20.49 km/s
2037-Dec-06 09:32 0.194671 AU
29122433 km
12.58 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
23.5

Orbit Quality

RMS
0.40318
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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