SpaceAtlas Space Object Data
NASA JPL SBDB · 803308

803308

803308 is an Amor-type near-Earth asteroid that approaches Earth from beyond our orbit without crossing it, orbiting the Sun at 2.262 AU once every 3.40 yr.

Amor Observations: 212
Orbital Period · P
3.40 yr
v(q)
36 km/s
v(Q)
10.9 km/s
Diameter · ≈
0.58 km
TJ
3.4
Eccentricity · e
0.5356

Orbit and dynamics

The path is an ellipse reaching 1.051 AU from the Sun at perihelion and 3.474 AU at aphelion, a radial span of 2.423 AU.

Applying Kepler's third law to a = 2.262 AU gives an orbital period of 3.40 yr, or about 1,243 days.

The high eccentricity (0.536) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

The orbital plane is tilted 10.42° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 36 km/s at perihelion and falls to 10.9 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 = 18.93 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.58 km.

Observation record and orbit quality

The current orbit solution is based on 212 observations and has a weighted RMS residual of 0.4955 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
2.262 AU
Eccentricity
0.5356
Perihelion
1.051 AU
Aphelion
3.473527 AU
Inclination
10.42°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
47.56°

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
18.93

Orbit Quality

RMS
0.49545
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.