SpaceAtlas Space Object Data
NASA JPL SBDB · 2001 UU92

2001 UU92

2001 UU92 is an Amor-type near-Earth asteroid that approaches Earth from beyond our orbit without crossing it, orbiting the Sun at 3.177 AU once every 5.66 yr.

Amor Observations: 190
Orbital Period · P
5.66 yr
v(q)
37.3 km/s
v(Q)
7.5 km/s
Diameter · ≈
0.3 km
TJ
2.8
Eccentricity · e
0.6664

Orbit and dynamics

The path is an ellipse reaching 1.06 AU from the Sun at perihelion and 5.294 AU at aphelion, a radial span of 4.234 AU.

Applying Kepler's third law to a = 3.177 AU gives an orbital period of 5.66 yr, or about 2,068 days.

The high eccentricity (0.666) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

The orbital plane is tilted 5.37° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 37.3 km/s at perihelion and falls to 7.5 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 = 20.35 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.3 km.

Observation record and orbit quality

The current orbit solution is based on 190 observations and has a weighted RMS residual of 0.5333 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
3.177 AU
Eccentricity
0.6664
Perihelion
1.06 AU
Aphelion
5.294153 AU
Inclination
5.37°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
119.16°

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
20.35

Orbit Quality

RMS
0.5333
Condition
0
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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