SpaceAtlas Space Object Data
NASA JPL SBDB · 2007 WM3

2007 WM3

2007 WM3 is an Aten-type near-Earth asteroid whose orbit lies mostly inside that of Earth, with a semi-major axis of 0.794 AU and a period of 0.71 yr.

Aten Observations: 104
Orbital Period · P
0.71 yr
v(q)
52.8 km/s
v(Q)
21.2 km/s
Diameter · ≈
0.08 km
TJ
7.26
Eccentricity · e
0.428

Orbit and dynamics

Between its closest point (0.454 AU) and its farthest (1.134 AU), the heliocentric distance changes by 0.68 AU over every revolution.

One full revolution takes 0.71 yr (258 days), computed from the semi-major axis of 0.794 AU.

The high eccentricity (0.428) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

The orbital plane is tilted 6.46° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 52.8 km/s at perihelion and falls to 21.2 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 = 23.28 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.08 km.

Observation record and orbit quality

Astrometry from 104 individual observations underpins this orbit; the fit leaves an RMS residual of 0.5996 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
0.7939 AU
Eccentricity
0.428
Perihelion
0.454 AU
Aphelion
1.133689 AU
Inclination
6.46°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
203.99°

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
2029-Dec-26 21:47 0.147865 AU
22120270 km
9.38 km/s
2035-Jan-16 14:01 0.142948 AU
21384772 km
14.66 km/s
2036-Nov-06 01:06 0.036774 AU
5501328 km
12.54 km/s
2041-Dec-01 23:44 0.147598 AU
22080286 km
9.42 km/s
2047-Jan-11 13:39 0.110962 AU
16599684 km
9.91 km/s
2053-Nov-09 10:35 0.052043 AU
7785518 km
10.43 km/s
2058-Dec-19 14:22 0.155946 AU
23329242 km
9.42 km/s
2064-Jan-17 05:55 0.117391 AU
17561384 km
13.36 km/s
2065-Nov-06 08:12 0.068368 AU
10227640 km
13.66 km/s
2070-Nov-29 21:57 0.142634 AU
21337669 km
9.42 km/s
2076-Jan-11 19:36 0.111026 AU
16609281 km
9.92 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
23.28

Orbit Quality

RMS
0.59957
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

Explore asteroids, comets and near-Earth objects with JPL orbital data.