SpaceAtlas Space Object Data
NASA JPL SBDB · 2016 CB138

2016 CB138

2016 CB138 is an Amor-type near-Earth asteroid that approaches Earth from beyond our orbit without crossing it, orbiting the Sun at 1.913 AU once every 2.65 yr.

Amor Observations: 271
Orbital Period · P
2.65 yr
v(q)
35.7 km/s
v(Q)
13 km/s
Diameter · ≈
0.07 km
TJ
3.79
Eccentricity · e
0.4659

Orbit and dynamics

The path is an ellipse reaching 1.022 AU from the Sun at perihelion and 2.804 AU at aphelion, a radial span of 1.782 AU.

Applying Kepler's third law to a = 1.913 AU gives an orbital period of 2.65 yr, or about 966 days.

The high eccentricity (0.466) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

Its inclination of 2.96° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 35.7 km/s at perihelion and falls to 13 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 = 23.63 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.07 km.

Observation record and orbit quality

The current orbit solution is based on 271 observations and has a weighted RMS residual of 0.3322 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
1.913 AU
Eccentricity
0.4659
Perihelion
1.022 AU
Aphelion
2.804267 AU
Inclination
2.96°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
319.71°

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
23.63

Orbit Quality

RMS
0.33218
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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