SpaceAtlas Space Object Data
NASA JPL SBDB · 371660

371660

371660 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.292 AU it takes 1.47 yr to circle the Sun.

Apollo Observations: 293
Orbital Period · P
1.47 yr
v(q)
34.5 km/s
v(Q)
19.9 km/s
Diameter · ≈
0.22 km
TJ
4.98
Eccentricity · e
0.2693

Orbit and dynamics

Between its closest point (0.944 AU) and its farthest (1.64 AU), the heliocentric distance changes by 0.696 AU over every revolution.

One full revolution takes 1.47 yr (536 days), computed from the semi-major axis of 1.292 AU.

An eccentricity of 0.269 makes the orbit moderately elongated.

The orbital plane is tilted 7.59° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 34.5 km/s at perihelion and falls to 19.9 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

The measured diameter is 0.23 km, a value from direct size determination rather than from brightness alone.

A geometric albedo of 0.16 points to a comparatively bright, reflective surface.

Observation record and orbit quality

Astrometry from 293 individual observations underpins this orbit; the fit leaves an RMS residual of 0.5133 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
1.292 AU
Eccentricity
0.2693
Perihelion
0.944 AU
Aphelion
1.639936 AU
Inclination
7.59°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
274.1°

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

No close approaches to Earth are currently on record for this object.

Physical Parameters

Diameter
0.23 km
Albedo
0.16
Density
— g/cm³
Rotation Period
— h
Absolute Magnitude
21.09

Orbit Quality

RMS
0.51328
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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