SpaceAtlas Space Object Data
NASA JPL SBDB · 868895

868895

868895 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.438 AU it takes 1.72 yr to circle the Sun.

Apollo Observations: 182
Orbital Period · P
1.72 yr
v(q)
34.9 km/s
v(Q)
17.7 km/s
Diameter · ≈
0.34 km
TJ
4.53
Eccentricity · e
0.3285

Orbit and dynamics

The path is an ellipse reaching 0.966 AU from the Sun at perihelion and 1.91 AU at aphelion, a radial span of 0.944 AU.

Applying Kepler's third law to a = 1.438 AU gives an orbital period of 1.72 yr, or about 630 days.

An eccentricity of 0.329 makes the orbit moderately elongated.

A steep inclination of 23.79° carries it well above and below the ecliptic plane.

By the vis-viva equation its orbital speed rises to 34.9 km/s at perihelion and falls to 17.7 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 = 20.09 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.34 km.

Observation record and orbit quality

The current orbit solution is based on 182 observations and has a weighted RMS residual of 0.5012 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
1.438 AU
Eccentricity
0.3285
Perihelion
0.966 AU
Aphelion
1.910383 AU
Inclination
23.79°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
200.1°

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
2042-Oct-21 08:35 0.095605 AU
14302286 km
13.74 km/s
2073-Nov-01 20:21 0.102619 AU
15351578 km
15.85 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
20.09

Orbit Quality

RMS
0.50122
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

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