SpaceAtlas Space Object Data
NASA JPL SBDB · 2018 LG

2018 LG

2018 LG is an Amor-type near-Earth asteroid that approaches Earth from beyond our orbit without crossing it, orbiting the Sun at 1.639 AU once every 2.10 yr.

Amor Observations: 96
Orbital Period · P
2.10 yr
v(q)
32.8 km/s
v(Q)
16.5 km/s
Diameter · ≈
0.11 km
TJ
4.21
Eccentricity · e
0.3318

Orbit and dynamics

The path is an ellipse reaching 1.095 AU from the Sun at perihelion and 2.183 AU at aphelion, a radial span of 1.088 AU.

Applying Kepler's third law to a = 1.639 AU gives an orbital period of 2.10 yr, or about 766 days.

An eccentricity of 0.332 makes the orbit moderately elongated.

The orbital plane is tilted 11.21° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 32.8 km/s at perihelion and falls to 16.5 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 = 22.6 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.11 km.

Observation record and orbit quality

The current orbit solution is based on 96 observations and has a weighted RMS residual of 0.5369 arcseconds.

Condition code U = 6 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
1.639 AU
Eccentricity
0.3318
Perihelion
1.095 AU
Aphelion
2.18282 AU
Inclination
11.21°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
279.83°

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

No close approaches to Earth are currently on record for this object.

Physical Parameters

Diameter
— km
Albedo
—
Density
— g/cm³
Rotation Period
— h
Absolute Magnitude
22.6

Orbit Quality

RMS
0.5369
Condition
6
Orbit ID
—
Data source: NASA JPL Small-Body Database . 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.

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