SpaceAtlas Space Object Data
NASA JPL SBDB · 2012 TR5

2012 TR5

2012 TR5 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.579 AU it takes 1.98 yr to circle the Sun.

Apollo Observations: 22
Orbital Period · P
1.98 yr
v(q)
35.6 km/s
v(Q)
15.8 km/s
Diameter · ≈
0.03 km
TJ
4.29
Eccentricity · e
0.3864

Orbit and dynamics

The path is an ellipse reaching 0.969 AU from the Sun at perihelion and 2.189 AU at aphelion, a radial span of 1.22 AU.

Applying Kepler's third law to a = 1.579 AU gives an orbital period of 1.98 yr, or about 725 days.

An eccentricity of 0.386 makes the orbit moderately elongated.

The orbital plane is tilted 13.11° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 35.6 km/s at perihelion and falls to 15.8 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 = 25.5 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.03 km.

Observation record and orbit quality

The current orbit solution is based on 22 observations and has a weighted RMS residual of 0.736 arcseconds.

Condition code U = 8 signals a poorly constrained orbit, so its future path should be treated as provisional.

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
1.579 AU
Eccentricity
0.3864
Perihelion
0.969 AU
Aphelion
2.189126 AU
Inclination
13.11°
Orbital Period
— yr
Epoch
2456206.5
Mean Anomaly
23.44°

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
25.5

Orbit Quality

RMS
0.73602
Condition
8
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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