SpaceAtlas Space Object Data
NASA JPL SBDB · 2014 WP202

2014 WP202

2014 WP202 is an Amor-type near-Earth asteroid that approaches Earth from beyond our orbit without crossing it, orbiting the Sun at 2.025 AU once every 2.88 yr.

Amor Observations: 124
Orbital Period · P
2.88 yr
v(q)
31.5 km/s
v(Q)
13.9 km/s
Diameter · ≈
0.55 km
TJ
3.43
Eccentricity · e
0.3872

Orbit and dynamics

Between its closest point (1.241 AU) and its farthest (2.809 AU), the heliocentric distance changes by 1.568 AU over every revolution.

One full revolution takes 2.88 yr (1,053 days), computed from the semi-major axis of 2.025 AU.

An eccentricity of 0.387 makes the orbit moderately elongated.

A steep inclination of 41.3° carries it well above and below the ecliptic plane.

By the vis-viva equation its orbital speed rises to 31.5 km/s at perihelion and falls to 13.9 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 = 19.06 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.55 km.

Observation record and orbit quality

Astrometry from 124 individual observations underpins this orbit; the fit leaves an RMS residual of 0.4725 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
2.025 AU
Eccentricity
0.3872
Perihelion
1.241 AU
Aphelion
2.80908 AU
Inclination
41.3°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
22.15°

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
2040-Nov-20 06:41 0.483306 AU
72301567 km
20.57 km/s
2063-Nov-20 20:27 0.452761 AU
67732098 km
22.22 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
19.06

Orbit Quality

RMS
0.47254
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.

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