SpaceAtlas Space Object Data
NASA JPL SBDB · 2025 CD2

2025 CD2

2025 CD2 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.018 AU it takes 1.03 yr to circle the Sun.

Apollo Observations: 40
Orbital Period · P
1.03 yr
v(q)
43.7 km/s
v(Q)
19.9 km/s
Diameter · ≈
0.02 km
TJ
5.93
Eccentricity · e
0.3735

Orbit and dynamics

Between its closest point (0.638 AU) and its farthest (1.398 AU), the heliocentric distance changes by 0.76 AU over every revolution.

One full revolution takes 1.03 yr (375 days), computed from the semi-major axis of 1.018 AU.

An eccentricity of 0.373 makes the orbit moderately elongated.

Its inclination of 3.73° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 43.7 km/s at perihelion and falls to 19.9 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 = 26.71 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.02 km.

Observation record and orbit quality

Astrometry from 40 individual observations underpins this orbit; the fit leaves an RMS residual of 0.343 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
1.018 AU
Eccentricity
0.3735
Perihelion
0.638 AU
Aphelion
1.398223 AU
Inclination
3.73°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
174.86°

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
2054-Jun-21 21:38 0.056402 AU
8437553 km
15.95 km/s
2055-Jun-27 23:31 0.037378 AU
5591623 km
11.79 km/s
2056-Jun-30 23:34 0.026779 AU
4006136 km
7.92 km/s
2066-Feb-02 19:47 0.005554 AU
830876 km
9.94 km/s
2067-Feb-07 12:29 0.005379 AU
804613 km
13.90 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
26.71

Orbit Quality

RMS
0.34296
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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