SpaceAtlas Space Object Data
NASA JPL SBDB · 2023 CJ2

2023 CJ2

2023 CJ2 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.273 AU it takes 1.44 yr to circle the Sun.

Apollo Observations: 126
Orbital Period · P
1.44 yr
v(q)
33.1 km/s
v(Q)
21.1 km/s
Diameter · ≈
0.03 km
TJ
5.03
Eccentricity · e
0.2219

Orbit and dynamics

Between its closest point (0.99 AU) and its farthest (1.555 AU), the heliocentric distance changes by 0.565 AU over every revolution.

One full revolution takes 1.44 yr (525 days), computed from the semi-major axis of 1.273 AU.

An eccentricity of 0.222 makes the orbit moderately elongated.

The orbital plane is tilted 13.53° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 33.1 km/s at perihelion and falls to 21.1 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 = 25.47 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.03 km.

Observation record and orbit quality

Astrometry from 126 individual observations underpins this orbit; the fit leaves an RMS residual of 0.495 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
1.273 AU
Eccentricity
0.2219
Perihelion
0.99 AU
Aphelion
1.555479 AU
Inclination
13.53°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
95.57°

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
2033-Apr-02 03:59 0.265560 AU
39727270 km
10.82 km/s
2036-Jan-17 19:02 0.446077 AU
66732165 km
19.53 km/s
2036-Jul-22 06:23 0.424825 AU
63552860 km
8.68 km/s
2046-Feb-04 08:48 0.077713 AU
11625692 km
11.06 km/s
2059-Aug-03 16:07 0.454257 AU
67955890 km
9.35 km/s
2069-Jan-26 16:06 0.226673 AU
33909725 km
14.66 km/s
2069-Jul-07 23:33 0.370181 AU
55378300 km
7.58 km/s
2079-Feb-19 10:57 0.011238 AU
1681199 km
7.96 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
25.47

Orbit Quality

RMS
0.49503
Condition
6
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.