SpaceAtlas Space Object Data
NASA JPL SBDB · 2018 GE2

2018 GE2

2018 GE2 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.087 AU it takes 1.13 yr to circle the Sun.

Apollo Observations: 110
Orbital Period · P
1.13 yr
v(q)
36 km/s
v(Q)
22.7 km/s
Diameter · ≈
0.01 km
TJ
5.68
Eccentricity · e
0.2264

Orbit and dynamics

Between its closest point (0.841 AU) and its farthest (1.333 AU), the heliocentric distance changes by 0.492 AU over every revolution.

One full revolution takes 1.13 yr (414 days), computed from the semi-major axis of 1.087 AU.

An eccentricity of 0.226 makes the orbit moderately elongated.

Its inclination of 0.47° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 36 km/s at perihelion and falls to 22.7 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 = 27.04 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.01 km.

Observation record and orbit quality

Astrometry from 110 individual observations underpins this orbit; the fit leaves an RMS residual of 0.4922 arcseconds.

Condition code U = 5 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
1.087 AU
Eccentricity
0.2264
Perihelion
0.841 AU
Aphelion
1.333097 AU
Inclination
0.47°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
133.65°

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-29 23:24 0.361000 AU
54004846 km
16.89 km/s
2033-Oct-11 05:58 0.349050 AU
52217171 km
16.66 km/s
2034-Aug-13 16:28 0.297335 AU
44480755 km
6.30 km/s
2035-Apr-03 01:48 0.051523 AU
7707697 km
4.51 km/s
2042-Oct-30 03:27 0.000732 AU
109453 km
6.58 km/s
2043-Aug-17 21:07 0.234725 AU
35114381 km
5.78 km/s
2045-May-08 05:55 0.029644 AU
4434628 km
10.80 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
27.04

Orbit Quality

RMS
0.49221
Condition
5
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.