SpaceAtlas Space Object Data
NASA JPL SBDB · 889136

889136

889136 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 2.395 AU it takes 3.71 yr to circle the Sun.

Apollo Observations: 468
Orbital Period · P
3.71 yr
v(q)
53.5 km/s
v(Q)
6.9 km/s
Diameter · ≈
0.74 km
TJ
3.02
Eccentricity · e
0.7712

Orbit and dynamics

Between its closest point (0.548 AU) and its farthest (4.242 AU), the heliocentric distance changes by 3.694 AU over every revolution.

One full revolution takes 3.71 yr (1,354 days), computed from the semi-major axis of 2.395 AU.

The high eccentricity (0.771) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

The orbital plane is tilted 11.26° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 53.5 km/s at perihelion and falls to 6.9 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

No direct size measurement is available; from an absolute magnitude of H = 18.41 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.74 km.

Observation record and orbit quality

Astrometry from 468 individual observations underpins this orbit; the fit leaves an RMS residual of 0.3887 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
2.395 AU
Eccentricity
0.7712
Perihelion
0.548 AU
Aphelion
4.242024 AU
Inclination
11.26°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
355.43°

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
18.41

Orbit Quality

RMS
0.38867
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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