SpaceAtlas Space Object Data
NASA JPL SBDB · 2016 UT149

2016 UT149

2016 UT149 is an Aten-type near-Earth asteroid whose orbit lies mostly inside that of Earth, with a semi-major axis of 0.981 AU and a period of 0.97 yr.

Aten Observations: 21
Orbital Period · P
0.97 yr
v(q)
37.2 km/s
v(Q)
24.3 km/s
TJ
6.16
Eccentricity · e
0.2093

Orbit and dynamics

The path is an ellipse reaching 0.775 AU from the Sun at perihelion and 1.186 AU at aphelion, a radial span of 0.411 AU.

Applying Kepler's third law to a = 0.981 AU gives an orbital period of 0.97 yr, or about 355 days.

An eccentricity of 0.209 makes the orbit moderately elongated.

Its inclination of 2.73° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 37.2 km/s at perihelion and falls to 24.3 km/s at aphelion.

Because q < 1 AU and Q > 1 AU, this orbit geometrically intersects the region of Earth's orbit.

Size and surface

Neither a measured diameter nor a reliable absolute magnitude is available for 2016 UT149, so its physical size remains unconstrained.

Observation record and orbit quality

The current orbit solution is based on 21 observations and has a weighted RMS residual of 0.61 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
0.9805 AU
Eccentricity
0.2093
Perihelion
0.775 AU
Aphelion
1.185719 AU
Inclination
2.73°
Orbital Period
— yr
Epoch
2460600.5
Mean Anomaly
358.3°

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
33.07

Orbit Quality

RMS
0.61
Condition
6
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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