SpaceAtlas Space Object Data
NASA JPL SBDB · 2017 WX13

2017 WX13

2017 WX13 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.279 AU it takes 1.45 yr to circle the Sun.

Apollo Observations: 52
Orbital Period · P
1.45 yr
v(q)
32.7 km/s
v(Q)
21.2 km/s
Diameter · ≈
0.05 km
TJ
5.04
Eccentricity · e
0.2119

Orbit and dynamics

Between its closest point (1.008 AU) and its farthest (1.55 AU), the heliocentric distance changes by 0.542 AU over every revolution.

One full revolution takes 1.45 yr (528 days), computed from the semi-major axis of 1.279 AU.

An eccentricity of 0.212 makes the orbit moderately elongated.

Its inclination of 2.47° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 32.7 km/s at perihelion and falls to 21.2 km/s at aphelion.

Size and surface

No direct size measurement is available; from an absolute magnitude of H = 24.4 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.05 km.

Observation record and orbit quality

Astrometry from 52 individual observations underpins this orbit; the fit leaves an RMS residual of 0.504 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
1.279 AU
Eccentricity
0.2119
Perihelion
1.008 AU
Aphelion
1.55002 AU
Inclination
2.47°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
348.68°

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
2027-May-27 08:49 0.478276 AU
71549115 km
7.34 km/s
2030-Nov-20 07:37 0.091065 AU
13623197 km
6.25 km/s
2033-Aug-16 23:14 0.464023 AU
69416844 km
17.19 km/s
2034-Feb-10 08:10 0.394524 AU
59019983 km
6.06 km/s
2043-Jul-02 02:58 0.352231 AU
52693015 km
5.00 km/s
2043-Dec-07 02:50 0.371619 AU
55593459 km
14.51 km/s
2046-Sep-03 00:57 0.201526 AU
30147869 km
9.12 km/s
2047-Jan-05 06:53 0.261097 AU
39059576 km
3.04 km/s
2056-Jun-06 08:40 0.448832 AU
67144290 km
6.77 km/s
2059-Oct-31 22:05 0.027855 AU
4167087 km
3.19 km/s
2063-Feb-19 00:34 0.426276 AU
63770017 km
6.61 km/s
2072-Jul-03 08:38 0.324472 AU
48540370 km
4.88 km/s
2072-Dec-06 07:37 0.308748 AU
46187992 km
14.19 km/s
2075-Sep-04 19:38 0.130084 AU
19460297 km
8.84 km/s
2079-Mar-10 15:16 0.479220 AU
71690281 km
7.70 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
24.4

Orbit Quality

RMS
0.50401
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.

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