SpaceAtlas Space Object Data
NASA JPL SBDB · 142040

142040

142040 is an Amor-type near-Earth asteroid that approaches Earth from beyond our orbit without crossing it, orbiting the Sun at 1.667 AU once every 2.15 yr.

Amor Observations: 2,565
Orbital Period · P
2.15 yr
v(q)
33 km/s
v(Q)
16.1 km/s
Diameter · ≈
2 km
TJ
4.06
Eccentricity · e
0.3443

Orbit and dynamics

The path is an ellipse reaching 1.093 AU from the Sun at perihelion and 2.241 AU at aphelion, a radial span of 1.148 AU.

Applying Kepler's third law to a = 1.667 AU gives an orbital period of 2.15 yr, or about 786 days.

An eccentricity of 0.344 makes the orbit moderately elongated.

A steep inclination of 28.25° carries it well above and below the ecliptic plane.

By the vis-viva equation its orbital speed rises to 33 km/s at perihelion and falls to 16.1 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 1.23 km, a value from direct size determination rather than from brightness alone.

A geometric albedo of 0.353 points to a comparatively bright, reflective surface.

Observation record and orbit quality

The current orbit solution is based on 2,565 observations and has a weighted RMS residual of 0.4284 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
1.667 AU
Eccentricity
0.3443
Perihelion
1.093 AU
Aphelion
2.240948 AU
Inclination
28.25°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
348.99°

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
2030-Nov-07 16:19 0.120000 AU
17951714 km
15.95 km/s
2058-Nov-05 10:00 0.129161 AU
19322214 km
15.55 km/s

Distances in astronomical units (AU) and kilometres. Source: NASA/JPL CNEOS Close Approach Data API.

Physical Parameters

Diameter
1.232 km
Albedo
0.353
Density
— g/cm³
Rotation Period
— h
Absolute Magnitude
16.25

Orbit Quality

RMS
0.42838
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.

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