SpaceAtlas Space Object Data
NASA JPL SBDB · 2018 GE

2018 GE

2018 GE is an Aten-type near-Earth asteroid whose orbit lies mostly inside that of Earth, with a semi-major axis of 0.921 AU and a period of 0.88 yr.

Aten Observations: 44
Orbital Period · P
0.88 yr
v(q)
34.5 km/s
v(Q)
27.9 km/s
Diameter · ≈
0.01 km
TJ
6.48
Eccentricity · e
0.1069

Orbit and dynamics

Between its closest point (0.823 AU) and its farthest (1.02 AU), the heliocentric distance changes by 0.197 AU over every revolution.

One full revolution takes 0.88 yr (323 days), computed from the semi-major axis of 0.921 AU.

An eccentricity of 0.107 makes the orbit moderately elongated.

Its inclination of 1.24° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 34.5 km/s at perihelion and falls to 27.9 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 = 27.5 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.01 km.

Observation record and orbit quality

Astrometry from 44 individual observations underpins this orbit; the fit leaves an RMS residual of 0.4936 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
0.9215 AU
Eccentricity
0.1069
Perihelion
0.823 AU
Aphelion
1.020008 AU
Inclination
1.24°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
219.53°

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
2033-Mar-31 23:52 0.290538 AU
43463915 km
11.19 km/s
2033-Oct-24 13:34 0.169573 AU
25367767 km
4.49 km/s
2034-Jun-01 07:48 0.335186 AU
50143125 km
12.51 km/s
2048-Mar-27 08:08 0.210341 AU
31466501 km
9.85 km/s
2049-May-27 08:21 0.355728 AU
53216149 km
14.34 km/s
2056-Jun-05 07:27 0.062174 AU
9301106 km
5.74 km/s
2063-Mar-22 06:49 0.025630 AU
3834147 km
3.74 km/s
2070-Apr-05 00:59 0.340979 AU
51009672 km
15.44 km/s
2071-Jun-04 19:15 0.097413 AU
14572805 km
8.38 km/s
2078-Mar-21 23:38 0.008473 AU
1267564 km
4.74 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
27.5

Orbit Quality

RMS
0.49363
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.