SpaceAtlas Space Object Data
NASA JPL SBDB · 2010 HC

2010 HC

2010 HC belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 2.126 AU it takes 3.10 yr to circle the Sun.

Apollo Observations: 102
Orbital Period · P
3.10 yr
v(q)
36.5 km/s
v(Q)
11.4 km/s
Diameter · ≈
0.2 km
TJ
3.53
Eccentricity · e
0.5229

Orbit and dynamics

The path is an ellipse reaching 1.014 AU from the Sun at perihelion and 3.238 AU at aphelion, a radial span of 2.224 AU.

Applying Kepler's third law to a = 2.126 AU gives an orbital period of 3.10 yr, or about 1,132 days.

The high eccentricity (0.523) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

The orbital plane is tilted 6.87° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 36.5 km/s at perihelion and falls to 11.4 km/s at aphelion.

Size and surface

The measured diameter is 0.13 km, a value from direct size determination rather than from brightness alone.

A geometric albedo of 0.328 points to a comparatively bright, reflective surface.

Observation record and orbit quality

The current orbit solution is based on 102 observations and has a weighted RMS residual of 0.4806 arcseconds.

Condition code U = 4 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
2.126 AU
Eccentricity
0.5229
Perihelion
1.014 AU
Aphelion
3.237685 AU
Inclination
6.87°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
51.15°

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
0.128 km
Albedo
0.328
Density
— g/cm³
Rotation Period
— h
Absolute Magnitude
21.3

Orbit Quality

RMS
0.48064
Condition
4
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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