SpaceAtlas Space Object Data
NASA JPL SBDB · 2026 TM

2026 TM

2026 TM belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.211 AU it takes 1.33 yr to circle the Sun.

Apollo Observations: 27
Orbital Period · P
1.33 yr
v(q)
32.9 km/s
v(Q)
22.2 km/s
Diameter · ≈
0.04 km
TJ
5.18
Eccentricity · e
0.1937

Orbit and dynamics

The path is an ellipse reaching 0.976 AU from the Sun at perihelion and 1.446 AU at aphelion, a radial span of 0.47 AU.

Applying Kepler's third law to a = 1.211 AU gives an orbital period of 1.33 yr, or about 487 days.

An eccentricity of 0.194 makes the orbit moderately elongated.

A steep inclination of 21.42° carries it well above and below the ecliptic plane.

By the vis-viva equation its orbital speed rises to 32.9 km/s at perihelion and falls to 22.2 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 = 24.97 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.04 km.

Observation record and orbit quality

The current orbit solution is based on 27 observations and has a weighted RMS residual of 0.4237 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
1.211 AU
Eccentricity
0.1937
Perihelion
0.976 AU
Aphelion
1.445571 AU
Inclination
21.42°
Orbital Period
— yr
Epoch
2461315.5
Mean Anomaly
31.18°

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

Predicted close approaches to Earth, from NASA's Center for Near-Earth Object Studies (CNEOS).

Date (UTC)Miss distanceVelocity
2030-Sep-28 17:00 0.006628 AU
991485 km
11.76 km/s

Distances in astronomical units (AU) and kilometres. Source: NASA/JPL CNEOS Close Approach Data API.

Physical Parameters

Diameter
— km
Albedo
—
Density
— g/cm³
Rotation Period
— h
Absolute Magnitude
24.97

Orbit Quality

RMS
0.42369
Condition
8
Orbit ID
—
Data source: NASA JPL Small-Body Database · NASA CNEOS. 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

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