SpaceAtlas Space Object Data
NASA JPL SBDB · 2014 UW33

2014 UW33

2014 UW33 is an Aten-type near-Earth asteroid whose orbit lies mostly inside that of Earth, with a semi-major axis of 0.836 AU and a period of 0.76 yr.

Aten Observations: 82
Orbital Period · P
0.76 yr
v(q)
51.9 km/s
v(Q)
20.5 km/s
Diameter · ≈
0.1 km
TJ
6.93
Eccentricity · e
0.4334

Orbit and dynamics

Between its closest point (0.473 AU) and its farthest (1.198 AU), the heliocentric distance changes by 0.725 AU over every revolution.

One full revolution takes 0.76 yr (279 days), computed from the semi-major axis of 0.836 AU.

The high eccentricity (0.433) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

The orbital plane is tilted 13.46° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 51.9 km/s at perihelion and falls to 20.5 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

No direct size measurement is available; from an absolute magnitude of H = 22.81 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.1 km.

Observation record and orbit quality

Astrometry from 82 individual observations underpins this orbit; the fit leaves an RMS residual of 0.4913 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
0.8357 AU
Eccentricity
0.4334
Perihelion
0.473 AU
Aphelion
1.197892 AU
Inclination
13.46°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
209.4°

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

Predicted close approaches to Earth, from NASA's Center for Near-Earth Object Studies (CNEOS).

Date (UTC)Miss distanceVelocity
2027-Oct-25 14:57 0.170733 AU
25541355 km
11.09 km/s
2030-Oct-09 22:59 0.143762 AU
21506439 km
16.09 km/s
2040-Nov-02 05:56 0.198938 AU
29760659 km
11.11 km/s
2043-Oct-10 02:40 0.100391 AU
15018249 km
14.02 km/s
2056-Oct-11 03:12 0.096134 AU
14381412 km
12.51 km/s
2063-Dec-23 13:51 0.196621 AU
29414133 km
12.23 km/s
2069-Oct-15 18:56 0.123347 AU
18452521 km
11.51 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
22.81

Orbit Quality

RMS
0.49125
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

Explore asteroids, comets and near-Earth objects with JPL orbital data.