SpaceAtlas Space Object Data
NASA JPL SBDB · 2007 WA

2007 WA

2007 WA belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.035 AU it takes 1.05 yr to circle the Sun.

Apollo Observations: 48
Orbital Period · P
1.05 yr
v(q)
34.1 km/s
v(Q)
25.1 km/s
Diameter · ≈
0.04 km
TJ
5.9
Eccentricity · e
0.1528

Orbit and dynamics

Between its closest point (0.877 AU) and its farthest (1.193 AU), the heliocentric distance changes by 0.316 AU over every revolution.

One full revolution takes 1.05 yr (385 days), computed from the semi-major axis of 1.035 AU.

An eccentricity of 0.153 makes the orbit moderately elongated.

The orbital plane is tilted 6.17° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 34.1 km/s at perihelion and falls to 25.1 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 = 24.7 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.04 km.

Observation record and orbit quality

Astrometry from 48 individual observations underpins this orbit; the fit leaves an RMS residual of 0.5192 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
1.035 AU
Eccentricity
0.1528
Perihelion
0.877 AU
Aphelion
1.193148 AU
Inclination
6.17°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
148.99°

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
2026-Nov-13 12:21 0.216949 AU
32455142 km
12.25 km/s
2027-Nov-17 11:10 0.069793 AU
10440827 km
3.81 km/s
2028-Aug-15 05:07 0.215357 AU
32216975 km
4.34 km/s
2029-May-13 11:42 0.009595 AU
1435389 km
5.11 km/s
2030-May-30 21:41 0.209562 AU
31349963 km
13.33 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
24.7

Orbit Quality

RMS
0.51917
Condition
6
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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