SpaceAtlas Space Object Data
NASA JPL SBDB · 2022 UD11

2022 UD11

2022 UD11 is an Aten-type near-Earth asteroid whose orbit lies mostly inside that of Earth, with a semi-major axis of 0.934 AU and a period of 0.90 yr.

Aten Observations: 74
Orbital Period · P
0.90 yr
v(q)
35.1 km/s
v(Q)
27.1 km/s
Diameter · ≈
0.04 km
TJ
6.29
Eccentricity · e
0.1283

Orbit and dynamics

The path is an ellipse reaching 0.814 AU from the Sun at perihelion and 1.054 AU at aphelion, a radial span of 0.24 AU.

Applying Kepler's third law to a = 0.934 AU gives an orbital period of 0.90 yr, or about 330 days.

An eccentricity of 0.128 makes the orbit moderately elongated.

A steep inclination of 31.22° carries it well above and below the ecliptic plane.

By the vis-viva equation its orbital speed rises to 35.1 km/s at perihelion and falls to 27.1 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 = 24.87 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.04 km.

Observation record and orbit quality

The current orbit solution is based on 74 observations and has a weighted RMS residual of 0.352 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
0.9338 AU
Eccentricity
0.1283
Perihelion
0.814 AU
Aphelion
1.053607 AU
Inclination
31.22°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
229.3°

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

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

Date (UTC)Miss distanceVelocity
2031-May-16 15:15 0.210444 AU
31481991 km
18.99 km/s
2031-Nov-01 14:28 0.087726 AU
13123692 km
15.88 km/s
2032-Mar-26 20:47 0.315334 AU
47173281 km
18.87 km/s
2032-Oct-21 11:07 0.339395 AU
50772763 km
21.87 km/s
2040-Nov-01 09:29 0.181251 AU
27114793 km
17.02 km/s
2041-Oct-25 14:26 0.130698 AU
19552137 km
18.98 km/s
2049-Nov-01 12:10 0.261435 AU
39110059 km
18.97 km/s
2050-Oct-28 21:41 0.042277 AU
6324494 km
16.86 km/s
2059-Oct-31 07:39 0.024434 AU
3655213 km
15.85 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
24.87

Orbit Quality

RMS
0.35204
Condition
7
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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