SpaceAtlas Space Object Data
NASA JPL SBDB · 2012 RX16

2012 RX16

2012 RX16 is an Amor-type near-Earth asteroid that approaches Earth from beyond our orbit without crossing it, orbiting the Sun at 1.939 AU once every 2.70 yr.

Amor Observations: 112
Orbital Period · P
2.70 yr
v(q)
32 km/s
v(Q)
14.3 km/s
Diameter · ≈
0.22 km
TJ
3.81
Eccentricity · e
0.3821

Orbit and dynamics

Between its closest point (1.198 AU) and its farthest (2.68 AU), the heliocentric distance changes by 1.482 AU over every revolution.

One full revolution takes 2.70 yr (986 days), computed from the semi-major axis of 1.939 AU.

An eccentricity of 0.382 makes the orbit moderately elongated.

Its inclination of 2.52° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 32 km/s at perihelion and falls to 14.3 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 = 21.04 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.22 km.

Observation record and orbit quality

Astrometry from 112 individual observations underpins this orbit; the fit leaves an RMS residual of 0.4191 arcseconds.

Condition code U = 1 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
1.939 AU
Eccentricity
0.3821
Perihelion
1.198 AU
Aphelion
2.679892 AU
Inclination
2.52°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
21.23°

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
21.04

Orbit Quality

RMS
0.41913
Condition
1
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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