SpaceAtlas Space Object Data
NASA JPL SBDB · 2013 LC7

2013 LC7

2013 LC7 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.506 AU it takes 1.85 yr to circle the Sun.

Apollo Observations: 125
Orbital Period · P
1.85 yr
v(q)
71.9 km/s
v(Q)
8.2 km/s
Diameter · ≈
0.48 km
TJ
3.95
Eccentricity · e
0.7958

Orbit and dynamics

The path is an ellipse reaching 0.308 AU from the Sun at perihelion and 2.704 AU at aphelion, a radial span of 2.396 AU.

Applying Kepler's third law to a = 1.506 AU gives an orbital period of 1.85 yr, or about 675 days.

The high eccentricity (0.796) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

A steep inclination of 40.2° carries it well above and below the ecliptic plane.

By the vis-viva equation its orbital speed rises to 71.9 km/s at perihelion and falls to 8.2 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 = 19.35 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.48 km.

Observation record and orbit quality

The current orbit solution is based on 125 observations and has a weighted RMS residual of 0.4329 arcseconds.

Condition code U = 0 means the orbit is very well determined, leaving only a small uncertainty in the future ephemeris.

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
1.506 AU
Eccentricity
0.7958
Perihelion
0.308 AU
Aphelion
2.704475 AU
Inclination
40.2°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
345.78°

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
2037-Jun-23 19:23 0.077581 AU
11606024 km
31.37 km/s
2074-Jun-19 20:01 0.070598 AU
10561302 km
33.88 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
19.35

Orbit Quality

RMS
0.43291
Condition
0
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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