SpaceAtlas Space Object Data
NASA JPL SBDB · 886663

886663

886663 is an Amor-type near-Earth asteroid that approaches Earth from beyond our orbit without crossing it, orbiting the Sun at 1.496 AU once every 1.83 yr.

Amor Observations: 97
Orbital Period · P
1.83 yr
v(q)
32.8 km/s
v(Q)
18.1 km/s
Diameter · ≈
0.36 km
TJ
4.45
Eccentricity · e
0.2895

Orbit and dynamics

The path is an ellipse reaching 1.063 AU from the Sun at perihelion and 1.929 AU at aphelion, a radial span of 0.866 AU.

Applying Kepler's third law to a = 1.496 AU gives an orbital period of 1.83 yr, or about 668 days.

An eccentricity of 0.289 makes the orbit moderately elongated.

The orbital plane is tilted 18.51° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 32.8 km/s at perihelion and falls to 18.1 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 = 19.98 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.36 km.

Observation record and orbit quality

The current orbit solution is based on 97 observations and has a weighted RMS residual of 0.409 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
1.496 AU
Eccentricity
0.2895
Perihelion
1.063 AU
Aphelion
1.929092 AU
Inclination
18.51°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
175.35°

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

Predicted close approaches to Earth, from NASA's Center for Near-Earth Object Studies (CNEOS).

Date (UTC)Miss distanceVelocity
2034-Aug-25 13:26 0.185581 AU
27762479 km
10.86 km/s
2045-Aug-20 04:44 0.100200 AU
14989718 km
10.39 km/s
2056-Aug-16 19:32 0.064636 AU
9669435 km
10.48 km/s
2067-Aug-15 16:27 0.064757 AU
9687491 km
10.67 km/s
2078-Aug-12 07:51 0.100916 AU
15096801 km
11.21 km/s

Distances in astronomical units (AU) and kilometres. Source: NASA/JPL CNEOS Close Approach Data API.

Physical Parameters

Diameter
— km
Albedo
—
Density
— g/cm³
Rotation Period
— h
Absolute Magnitude
19.98

Orbit Quality

RMS
0.40902
Condition
0
Orbit ID
—
Data source: NASA JPL Small-Body Database · NASA CNEOS. 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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