SpaceAtlas Space Object Data
NASA JPL SBDB · 443880

443880

443880 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.76 AU it takes 2.33 yr to circle the Sun.

Apollo Observations: 451
Orbital Period · P
2.33 yr
v(q)
35.4 km/s
v(Q)
14.2 km/s
Diameter · ≈
0.47 km
TJ
3.98
Eccentricity · e
0.4267

Orbit and dynamics

The path is an ellipse reaching 1.009 AU from the Sun at perihelion and 2.511 AU at aphelion, a radial span of 1.502 AU.

Applying Kepler's third law to a = 1.76 AU gives an orbital period of 2.33 yr, or about 853 days.

The high eccentricity (0.427) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

The orbital plane is tilted 12.67° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 35.4 km/s at perihelion and falls to 14.2 km/s at aphelion.

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 0.593 points to a comparatively bright, reflective surface.

Observation record and orbit quality

The current orbit solution is based on 451 observations and has a weighted RMS residual of 0.3747 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
1.76 AU
Eccentricity
0.4267
Perihelion
1.009 AU
Aphelion
2.510992 AU
Inclination
12.67°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
213.39°

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
0.228 km
Albedo
0.593
Density
— g/cm³
Rotation Period
— h
Absolute Magnitude
19.38

Orbit Quality

RMS
0.37468
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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