SpaceAtlas Space Object Data
NASA JPL SBDB · 514571

514571

514571 is an Amor-type near-Earth asteroid that approaches Earth from beyond our orbit without crossing it, orbiting the Sun at 1.195 AU once every 1.31 yr.

Amor Observations: 155
Orbital Period · P
1.31 yr
v(q)
31.3 km/s
v(Q)
23.7 km/s
Diameter · ≈
0.29 km
TJ
5.12
Eccentricity · e
0.1385

Orbit and dynamics

The path is an ellipse reaching 1.03 AU from the Sun at perihelion and 1.361 AU at aphelion, a radial span of 0.331 AU.

Applying Kepler's third law to a = 1.195 AU gives an orbital period of 1.31 yr, or about 477 days.

An eccentricity of 0.139 makes the orbit moderately elongated.

A steep inclination of 36.57° carries it well above and below the ecliptic plane.

By the vis-viva equation its orbital speed rises to 31.3 km/s at perihelion and falls to 23.7 km/s at aphelion.

Its perihelion lies just outside Earth's orbit, which is why it is classed as Earth-approaching rather than Earth-crossing.

Size and surface

No direct size measurement is available; from an absolute magnitude of H = 20.42 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.29 km.

Observation record and orbit quality

The current orbit solution is based on 155 observations and has a weighted RMS residual of 0.5192 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
1.195 AU
Eccentricity
0.1385
Perihelion
1.03 AU
Aphelion
1.360508 AU
Inclination
36.57°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
176.71°

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
20.42

Orbit Quality

RMS
0.51925
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.

Keep exploring

Explore asteroids, comets and near-Earth objects with JPL orbital data.