SpaceAtlas Space Object Data
NASA JPL SBDB · 2010 WD1

2010 WD1

2010 WD1 is an Aten-type near-Earth asteroid whose orbit lies mostly inside that of Earth, with a semi-major axis of 0.876 AU and a period of 0.82 yr.

Aten Observations: 12
Orbital Period · P
0.82 yr
v(q)
41.4 km/s
v(Q)
24.4 km/s
Diameter · ≈
0.02 km
TJ
6.73
Eccentricity · e
0.2583

Orbit and dynamics

Between its closest point (0.65 AU) and its farthest (1.103 AU), the heliocentric distance changes by 0.453 AU over every revolution.

One full revolution takes 0.82 yr (300 days), computed from the semi-major axis of 0.876 AU.

An eccentricity of 0.258 makes the orbit moderately elongated.

Its inclination of 1.83° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 41.4 km/s at perihelion and falls to 24.4 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 = 26.5 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.02 km.

Observation record and orbit quality

Astrometry from 12 individual observations underpins this orbit; the fit leaves an RMS residual of 0.2524 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
0.8765 AU
Eccentricity
0.2583
Perihelion
0.65 AU
Aphelion
1.1029 AU
Inclination
1.83°
Orbital Period
— yr
Epoch
2455527.5
Mean Anomaly
114.21°

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-Nov-27 06:22 0.276207 AU
41319922 km
18.62 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
26.5

Orbit Quality

RMS
0.2524
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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