SpaceAtlas Space Object Data
NASA JPL SBDB · 2010 WB3

2010 WB3

2010 WB3 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.543 AU it takes 1.92 yr to circle the Sun.

Apollo Observations: 150
Orbital Period · P
1.92 yr
v(q)
67.1 km/s
v(Q)
8.6 km/s
Diameter · ≈
0.36 km
TJ
4.05
Eccentricity · e
0.7737

Orbit and dynamics

Between its closest point (0.349 AU) and its farthest (2.737 AU), the heliocentric distance changes by 2.388 AU over every revolution.

One full revolution takes 1.92 yr (700 days), computed from the semi-major axis of 1.543 AU.

The high eccentricity (0.774) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

The orbital plane is tilted 8.91° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 67.1 km/s at perihelion and falls to 8.6 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 = 19.95 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.36 km.

Observation record and orbit quality

Astrometry from 150 individual observations underpins this orbit; the fit leaves an RMS residual of 0.4756 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
1.543 AU
Eccentricity
0.7737
Perihelion
0.349 AU
Aphelion
2.736819 AU
Inclination
8.91°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
5.08°

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
2035-Nov-14 01:57 0.149130 AU
22309543 km
26.24 km/s
2049-Jul-14 16:16 0.112981 AU
16901728 km
27.02 km/s
2058-Nov-14 18:24 0.148703 AU
22245630 km
25.80 km/s
2072-Jul-16 13:08 0.128722 AU
19256498 km
28.26 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
19.95

Orbit Quality

RMS
0.47561
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.

Keep exploring

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