SpaceAtlas Space Object Data
NASA JPL SBDB · 2016 WW7

2016 WW7

2016 WW7 is an Amor-type near-Earth asteroid that approaches Earth from beyond our orbit without crossing it, orbiting the Sun at 1.148 AU once every 1.23 yr.

Amor Observations: 19
Orbital Period · P
1.23 yr
v(q)
31.1 km/s
v(Q)
24.8 km/s
Diameter · ≈
0.02 km
TJ
5.43
Eccentricity · e
0.1132

Orbit and dynamics

The path is an ellipse reaching 1.018 AU from the Sun at perihelion and 1.278 AU at aphelion, a radial span of 0.26 AU.

Applying Kepler's third law to a = 1.148 AU gives an orbital period of 1.23 yr, or about 449 days.

An eccentricity of 0.113 makes the orbit moderately elongated.

The orbital plane is tilted 15.61° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 31.1 km/s at perihelion and falls to 24.8 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 = 26.8 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.02 km.

Observation record and orbit quality

The current orbit solution is based on 19 observations and has a weighted RMS residual of 0.5892 arcseconds.

Condition code U = 7 signals a poorly constrained orbit, so its future path should be treated as provisional.

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
1.148 AU
Eccentricity
0.1132
Perihelion
1.018 AU
Aphelion
1.277954 AU
Inclination
15.61°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
277.4°

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

No close approaches to Earth are currently on record for this object.

Physical Parameters

Diameter
— km
Albedo
—
Density
— g/cm³
Rotation Period
— h
Absolute Magnitude
26.8

Orbit Quality

RMS
0.58923
Condition
7
Orbit ID
—
Data source: NASA JPL Small-Body Database . 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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