SpaceAtlas Space Object Data
NASA JPL SBDB · 24443

24443

24443 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 2.31 AU it takes 3.51 yr to circle the Sun.

Apollo Observations: 625
Orbital Period · P
3.51 yr
v(q)
62.8 km/s
v(Q)
6.1 km/s
Diameter · ≈
1.85 km
TJ
2.94
Eccentricity · e
0.8223

Orbit and dynamics

The path is an ellipse reaching 0.41 AU from the Sun at perihelion and 4.21 AU at aphelion, a radial span of 3.8 AU.

Applying Kepler's third law to a = 2.31 AU gives an orbital period of 3.51 yr, or about 1,282 days.

The high eccentricity (0.822) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

A steep inclination of 25.74° carries it well above and below the ecliptic plane.

By the vis-viva equation its orbital speed rises to 62.8 km/s at perihelion and falls to 6.1 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 = 16.42 and an assumed geometric albedo of 0.14, the diameter works out to roughly 1.85 km.

Observation record and orbit quality

The current orbit solution is based on 625 observations and has a weighted RMS residual of 0.4544 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
2.31 AU
Eccentricity
0.8223
Perihelion
0.41 AU
Aphelion
4.209513 AU
Inclination
25.74°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
115.78°

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
2064-Feb-16 10:25 0.375874 AU
56229929 km
19.91 km/s
2071-Feb-25 02:39 0.172308 AU
25776955 km
25.99 km/s
2078-Mar-04 06:02 0.134356 AU
20099417 km
30.81 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
16.42

Orbit Quality

RMS
0.45444
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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