SpaceAtlas Space Object Data
NASA JPL SBDB · 285625

285625

285625 is an Amor-type near-Earth asteroid that approaches Earth from beyond our orbit without crossing it, orbiting the Sun at 1.963 AU once every 2.75 yr.

Amor Observations: 940
Orbital Period · P
2.75 yr
v(q)
30.5 km/s
v(Q)
14.8 km/s
Diameter · ≈
0.92 km
TJ
3.79
Eccentricity · e
0.3474

Orbit and dynamics

Between its closest point (1.281 AU) and its farthest (2.645 AU), the heliocentric distance changes by 1.364 AU over every revolution.

One full revolution takes 2.75 yr (1,005 days), computed from the semi-major axis of 1.963 AU.

An eccentricity of 0.347 makes the orbit moderately elongated.

The orbital plane is tilted 6.94° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 30.5 km/s at perihelion and falls to 14.8 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 = 17.94 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.92 km.

Observation record and orbit quality

Astrometry from 940 individual observations underpins this orbit; the fit leaves an RMS residual of 0.5051 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
1.963 AU
Eccentricity
0.3474
Perihelion
1.281 AU
Aphelion
2.644946 AU
Inclination
6.94°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
79.78°

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
17.94

Orbit Quality

RMS
0.50508
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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