SpaceAtlas Space Object Data
NASA JPL SBDB · 2010 WC

2010 WC

2010 WC is an Aten-type near-Earth asteroid whose orbit lies mostly inside that of Earth, with a semi-major axis of 0.818 AU and a period of 0.74 yr.

Aten Observations: 60
Orbital Period · P
0.74 yr
v(q)
47.1 km/s
v(Q)
23 km/s
Diameter · ≈
0.03 km
TJ
7.1
Eccentricity · e
0.3427

Orbit and dynamics

The path is an ellipse reaching 0.538 AU from the Sun at perihelion and 1.099 AU at aphelion, a radial span of 0.561 AU.

Applying Kepler's third law to a = 0.818 AU gives an orbital period of 0.74 yr, or about 270 days.

An eccentricity of 0.343 makes the orbit moderately elongated.

The orbital plane is tilted 7.4° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 47.1 km/s at perihelion and falls to 23 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 = 25.5 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.03 km.

Observation record and orbit quality

The current orbit solution is based on 60 observations and has a weighted RMS residual of 0.3084 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
0.8184 AU
Eccentricity
0.3427
Perihelion
0.538 AU
Aphelion
1.098866 AU
Inclination
7.4°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
279.65°

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
25.5

Orbit Quality

RMS
0.30844
Condition
0
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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