SpaceAtlas Space Object Data
NASA JPL SBDB · 666241

666241

666241 is an Aten-type near-Earth asteroid whose orbit lies mostly inside that of Earth, with a semi-major axis of 0.905 AU and a period of 0.86 yr.

Aten Observations: 85
Orbital Period · P
0.86 yr
v(q)
50.7 km/s
v(Q)
19.3 km/s
Diameter · ≈
0.14 km
TJ
6.49
Eccentricity · e
0.4479

Orbit and dynamics

Between its closest point (0.499 AU) and its farthest (1.31 AU), the heliocentric distance changes by 0.811 AU over every revolution.

One full revolution takes 0.86 yr (314 days), computed from the semi-major axis of 0.905 AU.

The high eccentricity (0.448) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

The orbital plane is tilted 6.05° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 50.7 km/s at perihelion and falls to 19.3 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 0.12 km, a value from direct size determination rather than from brightness alone.

A geometric albedo of 0.205 points to a comparatively bright, reflective surface.

Observation record and orbit quality

Astrometry from 85 individual observations underpins this orbit; the fit leaves an RMS residual of 0.4446 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
0.9046 AU
Eccentricity
0.4479
Perihelion
0.499 AU
Aphelion
1.30977 AU
Inclination
6.05°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
101.24°

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
0.118 km
Albedo
0.205
Density
— g/cm³
Rotation Period
— h
Absolute Magnitude
22.04

Orbit Quality

RMS
0.44461
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.

Keep exploring

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