SpaceAtlas Space Object Data
NASA JPL SBDB · 88188

88188

88188 is an Amor-type near-Earth asteroid that approaches Earth from beyond our orbit without crossing it, orbiting the Sun at 2.008 AU once every 2.85 yr.

Amor Observations: 3,661
Orbital Period · P
2.85 yr
v(q)
31.8 km/s
v(Q)
13.9 km/s
Diameter · ≈
2.16 km
TJ
3.71
Eccentricity · e
0.3913

Orbit and dynamics

The path is an ellipse reaching 1.222 AU from the Sun at perihelion and 2.794 AU at aphelion, a radial span of 1.572 AU.

Applying Kepler's third law to a = 2.008 AU gives an orbital period of 2.85 yr, or about 1,039 days.

An eccentricity of 0.391 makes the orbit moderately elongated.

The orbital plane is tilted 11.34° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 31.8 km/s at perihelion and falls to 13.9 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

The measured diameter is 1.37 km, a value from direct size determination rather than from brightness alone.

A geometric albedo of 0.374 points to a comparatively bright, reflective surface.

Observation record and orbit quality

The current orbit solution is based on 3,661 observations and has a weighted RMS residual of 0.4724 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
2.008 AU
Eccentricity
0.3913
Perihelion
1.222 AU
Aphelion
2.79373 AU
Inclination
11.34°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
290.64°

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
1.371 km
Albedo
0.374
Density
— g/cm³
Rotation Period
— h
Absolute Magnitude
16.08

Orbit Quality

RMS
0.47238
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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