SpaceAtlas Space Object Data
NASA JPL SBDB · 41440

41440

41440 is an Amor-type near-Earth asteroid that approaches Earth from beyond our orbit without crossing it, orbiting the Sun at 1.576 AU once every 1.98 yr.

Amor Observations: 215
Orbital Period · P
1.98 yr
v(q)
29.4 km/s
v(Q)
19.1 km/s
Diameter · ≈
0.38 km
TJ
4.34
Eccentricity · e
0.2115

Orbit and dynamics

The path is an ellipse reaching 1.242 AU from the Sun at perihelion and 1.909 AU at aphelion, a radial span of 0.667 AU.

Applying Kepler's third law to a = 1.576 AU gives an orbital period of 1.98 yr, or about 723 days.

An eccentricity of 0.211 makes the orbit moderately elongated.

The orbital plane is tilted 15.11° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 29.4 km/s at perihelion and falls to 19.1 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

No direct size measurement is available; from an absolute magnitude of H = 19.88 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.38 km.

Observation record and orbit quality

The current orbit solution is based on 215 observations and has a weighted RMS residual of 0.5861 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
1.576 AU
Eccentricity
0.2115
Perihelion
1.242 AU
Aphelion
1.909324 AU
Inclination
15.11°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
44.12°

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
— km
Albedo
—
Density
— g/cm³
Rotation Period
— h
Absolute Magnitude
19.88

Orbit Quality

RMS
0.5861
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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