SpaceAtlas Space Object Data
NASA JPL SBDB · 2021 LC6

2021 LC6

2021 LC6 is an Amor-type near-Earth asteroid that approaches Earth from beyond our orbit without crossing it, orbiting the Sun at 1.131 AU once every 1.20 yr.

Amor Observations: 22
Orbital Period · P
1.20 yr
v(q)
30.5 km/s
v(Q)
25.7 km/s
Diameter · ≈
0.05 km
TJ
5.47
Eccentricity · e
0.0853

Orbit and dynamics

The path is an ellipse reaching 1.035 AU from the Sun at perihelion and 1.227 AU at aphelion, a radial span of 0.192 AU.

Applying Kepler's third law to a = 1.131 AU gives an orbital period of 1.20 yr, or about 439 days.

With e = 0.085, the orbit is close to circular.

A steep inclination of 20.57° carries it well above and below the ecliptic plane.

By the vis-viva equation its orbital speed rises to 30.5 km/s at perihelion and falls to 25.7 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 = 24.39 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.05 km.

Observation record and orbit quality

The current orbit solution is based on 22 observations and has a weighted RMS residual of 0.5787 arcseconds.

Condition code U = 8 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
1.131 AU
Eccentricity
0.0853
Perihelion
1.035 AU
Aphelion
1.227474 AU
Inclination
20.57°
Orbital Period
— yr
Epoch
2459378.5
Mean Anomaly
273.8°

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-Jun-07 14:44 0.139822 AU
20917118 km
10.32 km/s
2027-Nov-29 14:18 0.122035 AU
18256210 km
13.92 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
24.39

Orbit Quality

RMS
0.57866
Condition
8
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.

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