SpaceAtlas Space Object Data
NASA JPL SBDB · 888655

888655

888655 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 2.024 AU it takes 2.88 yr to circle the Sun.

Apollo Observations: 103
Orbital Period · P
2.88 yr
v(q)
37.5 km/s
v(Q)
11.7 km/s
Diameter · ≈
0.6 km
TJ
3.6
Eccentricity · e
0.524

Orbit and dynamics

Between its closest point (0.963 AU) and its farthest (3.085 AU), the heliocentric distance changes by 2.122 AU over every revolution.

One full revolution takes 2.88 yr (1,052 days), computed from the semi-major axis of 2.024 AU.

The high eccentricity (0.524) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

The orbital plane is tilted 14.94° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 37.5 km/s at perihelion and falls to 11.7 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 = 18.87 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.6 km.

Observation record and orbit quality

Astrometry from 103 individual observations underpins this orbit; the fit leaves an RMS residual of 0.5929 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
2.024 AU
Eccentricity
0.524
Perihelion
0.963 AU
Aphelion
3.084576 AU
Inclination
14.94°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
356.38°

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
2052-May-09 11:21 0.108093 AU
16170508 km
12.51 km/s
2075-Apr-26 19:12 0.176313 AU
26376124 km
14.05 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
18.87

Orbit Quality

RMS
0.59286
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.

Keep exploring

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