SpaceAtlas Space Object Data
NASA JPL SBDB · 2000 UO30

2000 UO30

2000 UO30 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.809 AU it takes 2.43 yr to circle the Sun.

Apollo Observations: 83
Orbital Period · P
2.43 yr
v(q)
36 km/s
v(Q)
13.6 km/s
Diameter · ≈
0.06 km
TJ
3.9
Eccentricity · e
0.4507

Orbit and dynamics

Between its closest point (0.994 AU) and its farthest (2.624 AU), the heliocentric distance changes by 1.63 AU over every revolution.

One full revolution takes 2.43 yr (889 days), computed from the semi-major axis of 1.809 AU.

The high eccentricity (0.451) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

The orbital plane is tilted 12.59° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 36 km/s at perihelion and falls to 13.6 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 = 23.9 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.06 km.

Observation record and orbit quality

Astrometry from 83 individual observations underpins this orbit; the fit leaves an RMS residual of 0.3858 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
1.809 AU
Eccentricity
0.4507
Perihelion
0.994 AU
Aphelion
2.624316 AU
Inclination
12.59°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
179.79°

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
2034-Dec-23 04:14 0.233498 AU
34930780 km
10.82 km/s
2052-Jan-19 17:47 0.435530 AU
65154306 km
17.67 km/s
2056-Oct-12 17:49 0.334918 AU
50102949 km
17.53 km/s
2073-Oct-29 03:30 0.105921 AU
15845577 km
11.58 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
23.9

Orbit Quality

RMS
0.38578
Condition
0
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

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