SpaceAtlas Space Object Data
NASA JPL SBDB · 357024

357024

357024 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.651 AU it takes 2.12 yr to circle the Sun.

Apollo Observations: 1,298
Orbital Period · P
2.12 yr
v(q)
35.4 km/s
v(Q)
15.2 km/s
Diameter · ≈
0.45 km
TJ
4.18
Eccentricity · e
0.4001

Orbit and dynamics

The path is an ellipse reaching 0.991 AU from the Sun at perihelion and 2.312 AU at aphelion, a radial span of 1.321 AU.

Applying Kepler's third law to a = 1.651 AU gives an orbital period of 2.12 yr, or about 775 days.

The high eccentricity (0.4) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

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

By the vis-viva equation its orbital speed rises to 35.4 km/s at perihelion and falls to 15.2 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

The measured diameter is 0.26 km, a value from direct size determination rather than from brightness alone.

A geometric albedo of 0.43 points to a comparatively bright, reflective surface.

Observation record and orbit quality

The current orbit solution is based on 1,298 observations and has a weighted RMS residual of 0.2521 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
1.651 AU
Eccentricity
0.4001
Perihelion
0.991 AU
Aphelion
2.311565 AU
Inclination
3.73°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
204.44°

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

No close approaches to Earth are currently on record for this object.

Physical Parameters

Diameter
0.255 km
Albedo
0.43
Density
— g/cm³
Rotation Period
— h
Absolute Magnitude
19.48

Orbit Quality

RMS
0.25211
Condition
0
Orbit ID
—
Data source: NASA JPL Small-Body Database . 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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