SpaceAtlas Space Object Data
NASA JPL SBDB · 311066

311066

311066 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.634 AU it takes 2.09 yr to circle the Sun.

Apollo Observations: 360
Orbital Period · P
2.09 yr
v(q)
35.6 km/s
v(Q)
15.3 km/s
Diameter · ≈
0.78 km
TJ
4.15
Eccentricity · e
0.3996

Orbit and dynamics

The path is an ellipse reaching 0.981 AU from the Sun at perihelion and 2.287 AU at aphelion, a radial span of 1.306 AU.

Applying Kepler's third law to a = 1.634 AU gives an orbital period of 2.09 yr, or about 763 days.

An eccentricity of 0.4 makes the orbit moderately elongated.

The orbital plane is tilted 19.46° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 35.6 km/s at perihelion and falls to 15.3 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 = 18.28 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.78 km.

Observation record and orbit quality

The current orbit solution is based on 360 observations and has a weighted RMS residual of 0.537 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
1.634 AU
Eccentricity
0.3996
Perihelion
0.981 AU
Aphelion
2.286946 AU
Inclination
19.46°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
219.37°

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
18.28

Orbit Quality

RMS
0.53695
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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