SpaceAtlas Space Object Data
NASA JPL SBDB · 2017 WJ14

2017 WJ14

2017 WJ14 is an Amor-type near-Earth asteroid that approaches Earth from beyond our orbit without crossing it, orbiting the Sun at 1.582 AU once every 1.99 yr.

Amor Observations: 21
Orbital Period · P
1.99 yr
v(q)
33.1 km/s
v(Q)
16.9 km/s
Diameter · ≈
0.04 km
TJ
4.29
Eccentricity · e
0.3232

Orbit and dynamics

The path is an ellipse reaching 1.071 AU from the Sun at perihelion and 2.093 AU at aphelion, a radial span of 1.022 AU.

Applying Kepler's third law to a = 1.582 AU gives an orbital period of 1.99 yr, or about 727 days.

An eccentricity of 0.323 makes the orbit moderately elongated.

The orbital plane is tilted 16.27° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 33.1 km/s at perihelion and falls to 16.9 km/s at aphelion.

Its perihelion lies just outside Earth's orbit, which is why it is classed as Earth-approaching rather than Earth-crossing.

Size and surface

No direct size measurement is available; from an absolute magnitude of H = 24.51 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.04 km.

Observation record and orbit quality

The current orbit solution is based on 21 observations and has a weighted RMS residual of 0.3722 arcseconds.

Condition code U = 1 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
1.582 AU
Eccentricity
0.3232
Perihelion
1.071 AU
Aphelion
2.093302 AU
Inclination
16.27°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
123.27°

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-Nov-15 07:17 0.311446 AU
46591646 km
8.83 km/s
2029-Nov-19 10:36 0.372616 AU
55742486 km
8.89 km/s
2031-Nov-28 05:49 0.435068 AU
65085229 km
8.69 km/s
2033-Dec-08 03:36 0.496824 AU
74323769 km
8.30 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
24.51

Orbit Quality

RMS
0.37219
Condition
1
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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