SpaceAtlas Space Object Data
NASA JPL SBDB · 2018 TR5

2018 TR5

2018 TR5 is an Amor-type near-Earth asteroid that approaches Earth from beyond our orbit without crossing it, orbiting the Sun at 2.48 AU once every 3.91 yr.

Amor Observations: 25
Orbital Period · P
3.91 yr
v(q)
35.2 km/s
v(Q)
10.2 km/s
Diameter · ≈
0.05 km
TJ
3.19
Eccentricity · e
0.5513

Orbit and dynamics

Between its closest point (1.113 AU) and its farthest (3.847 AU), the heliocentric distance changes by 2.734 AU over every revolution.

One full revolution takes 3.91 yr (1,426 days), computed from the semi-major axis of 2.48 AU.

The high eccentricity (0.551) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

The orbital plane is tilted 19.18° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 35.2 km/s at perihelion and falls to 10.2 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 = 24.1 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.05 km.

Observation record and orbit quality

Astrometry from 25 individual observations underpins this orbit; the fit leaves an RMS residual of 0.3352 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
2.48 AU
Eccentricity
0.5513
Perihelion
1.113 AU
Aphelion
3.847224 AU
Inclination
19.18°
Orbital Period
— yr
Epoch
2458403.5
Mean Anomaly
354.57°

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
24.1

Orbit Quality

RMS
0.33516
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.

Keep exploring

Explore asteroids, comets and near-Earth objects with JPL orbital data.