SpaceAtlas Space Object Data
NASA JPL SBDB · 329437

329437

329437 is an Aten-type near-Earth asteroid whose orbit lies mostly inside that of Earth, with a semi-major axis of 0.936 AU and a period of 0.91 yr.

Aten Observations: 921
Orbital Period · P
0.91 yr
v(q)
39.5 km/s
v(Q)
24 km/s
Diameter · ≈
0.47 km
TJ
6.38
Eccentricity · e
0.2432

Orbit and dynamics

The path is an ellipse reaching 0.708 AU from the Sun at perihelion and 1.163 AU at aphelion, a radial span of 0.455 AU.

Applying Kepler's third law to a = 0.936 AU gives an orbital period of 0.91 yr, or about 331 days.

An eccentricity of 0.243 makes the orbit moderately elongated.

The orbital plane is tilted 6.9° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 39.5 km/s at perihelion and falls to 24 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 = 19.41 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.47 km.

Observation record and orbit quality

The current orbit solution is based on 921 observations and has a weighted RMS residual of 0.3654 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
0.9357 AU
Eccentricity
0.2432
Perihelion
0.708 AU
Aphelion
1.163262 AU
Inclination
6.9°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
269.07°

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
— km
Albedo
—
Density
— g/cm³
Rotation Period
— h
Absolute Magnitude
19.41

Orbit Quality

RMS
0.36537
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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