SpaceAtlas Space Object Data
NASA JPL SBDB · 2026 TO111

2026 TO111

2026 TO111 is an Amor-type near-Earth asteroid that approaches Earth from beyond our orbit without crossing it, orbiting the Sun at 1.462 AU once every 1.77 yr.

Amor Observations: 43
Orbital Period · P
1.77 yr
v(q)
32.8 km/s
v(Q)
18.5 km/s
Diameter · ≈
0.09 km
TJ
4.57
Eccentricity · e
0.2792

Orbit and dynamics

The path is an ellipse reaching 1.054 AU from the Sun at perihelion and 1.87 AU at aphelion, a radial span of 0.816 AU.

Applying Kepler's third law to a = 1.462 AU gives an orbital period of 1.77 yr, or about 646 days.

An eccentricity of 0.279 makes the orbit moderately elongated.

The orbital plane is tilted 7.76° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 32.8 km/s at perihelion and falls to 18.5 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 = 22.87 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.09 km.

Observation record and orbit quality

The current orbit solution is based on 43 observations and has a weighted RMS residual of 0.2443 arcseconds.

Condition code U = 9 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
1.462 AU
Eccentricity
0.2792
Perihelion
1.054 AU
Aphelion
1.87019 AU
Inclination
7.76°
Orbital Period
— yr
Epoch
2461320.5
Mean Anomaly
317.69°

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
2027-Jan-10 05:05 0.169700 AU
25386686 km
6.45 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
22.87

Orbit Quality

RMS
0.24433
Condition
9
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.

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