SpaceAtlas Space Object Data
NASA JPL SBDB · 465616

465616

465616 is an Amor-type near-Earth asteroid that approaches Earth from beyond our orbit without crossing it, orbiting the Sun at 1.768 AU once every 2.35 yr.

Amor Observations: 412
Orbital Period · P
2.35 yr
v(q)
32.8 km/s
v(Q)
15.3 km/s
Diameter · ≈
0.61 km
TJ
3.8
Eccentricity · e
0.365

Orbit and dynamics

The path is an ellipse reaching 1.123 AU from the Sun at perihelion and 2.413 AU at aphelion, a radial span of 1.29 AU.

Applying Kepler's third law to a = 1.768 AU gives an orbital period of 2.35 yr, or about 859 days.

An eccentricity of 0.365 makes the orbit moderately elongated.

A steep inclination of 37.64° carries it well above and below the ecliptic plane.

By the vis-viva equation its orbital speed rises to 32.8 km/s at perihelion and falls to 15.3 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 = 18.83 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.61 km.

Observation record and orbit quality

The current orbit solution is based on 412 observations and has a weighted RMS residual of 0.4704 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
1.768 AU
Eccentricity
0.365
Perihelion
1.123 AU
Aphelion
2.41332 AU
Inclination
37.64°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
88.25°

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
18.83

Orbit Quality

RMS
0.47037
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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