SpaceAtlas Space Object Data
NASA JPL SBDB · 2017 WX

2017 WX

2017 WX belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.733 AU it takes 2.28 yr to circle the Sun.

Apollo Observations: 31
Orbital Period · P
2.28 yr
v(q)
37 km/s
v(Q)
13.9 km/s
Diameter · ≈
0.06 km
TJ
4.01
Eccentricity · e
0.4547

Orbit and dynamics

Between its closest point (0.945 AU) and its farthest (2.521 AU), the heliocentric distance changes by 1.576 AU over every revolution.

One full revolution takes 2.28 yr (833 days), computed from the semi-major axis of 1.733 AU.

The high eccentricity (0.455) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

The orbital plane is tilted 10.62° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 37 km/s at perihelion and falls to 13.9 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 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.06 km.

Observation record and orbit quality

Astrometry from 31 individual observations underpins this orbit; the fit leaves an RMS residual of 0.4753 arcseconds.

Condition code U = 5 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
1.733 AU
Eccentricity
0.4547
Perihelion
0.945 AU
Aphelion
2.520995 AU
Inclination
10.62°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
247.87°

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
2033-Nov-24 08:10 0.088009 AU
13165887 km
12.27 km/s
2043-Mar-21 19:51 0.452911 AU
67754556 km
21.33 km/s
2049-Nov-10 12:04 0.297797 AU
44549858 km
18.71 km/s
2059-Mar-08 03:12 0.253976 AU
37994320 km
14.26 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
24.0

Orbit Quality

RMS
0.47533
Condition
5
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.