SpaceAtlas Space Object Data
NASA JPL SBDB · 2007 UJ

2007 UJ

2007 UJ belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.145 AU it takes 1.23 yr to circle the Sun.

Apollo Observations: 25
Orbital Period · P
1.23 yr
v(q)
32.1 km/s
v(Q)
24.2 km/s
Diameter · ≈
0.03 km
TJ
5.4
Eccentricity · e
0.1407

Orbit and dynamics

Between its closest point (0.984 AU) and its farthest (1.306 AU), the heliocentric distance changes by 0.322 AU over every revolution.

One full revolution takes 1.23 yr (448 days), computed from the semi-major axis of 1.145 AU.

An eccentricity of 0.141 makes the orbit moderately elongated.

A steep inclination of 22.68° carries it well above and below the ecliptic plane.

By the vis-viva equation its orbital speed rises to 32.1 km/s at perihelion and falls to 24.2 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 = 25.2 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.03 km.

Observation record and orbit quality

Astrometry from 25 individual observations underpins this orbit; the fit leaves an RMS residual of 0.2763 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
1.145 AU
Eccentricity
0.1407
Perihelion
0.984 AU
Aphelion
1.306102 AU
Inclination
22.68°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
47.78°

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
2078-Oct-22 13:07 0.132833 AU
19871598 km
12.24 km/s
2079-Mar-18 05:39 0.311516 AU
46602155 km
13.42 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
25.2

Orbit Quality

RMS
0.27634
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.

Keep exploring

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