SpaceAtlas Space Object Data
NASA JPL SBDB · 2026 CT4

2026 CT4

2026 CT4 is an Aten-type near-Earth asteroid whose orbit lies mostly inside that of Earth, with a semi-major axis of 0.963 AU and a period of 0.94 yr.

Aten Observations: 17
Orbital Period · P
0.94 yr
v(q)
53.3 km/s
v(Q)
17.3 km/s
Diameter · ≈
0.07 km
TJ
6.13
Eccentricity · e
0.5105

Orbit and dynamics

Between its closest point (0.471 AU) and its farthest (1.454 AU), the heliocentric distance changes by 0.983 AU over every revolution.

One full revolution takes 0.94 yr (345 days), computed from the semi-major axis of 0.963 AU.

The high eccentricity (0.51) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

The orbital plane is tilted 13.73° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 53.3 km/s at perihelion and falls to 17.3 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 = 23.5 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.07 km.

Observation record and orbit quality

Astrometry from 17 individual observations underpins this orbit; the fit leaves an RMS residual of 0.3263 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
0.9626 AU
Eccentricity
0.5105
Perihelion
0.471 AU
Aphelion
1.454007 AU
Inclination
13.73°
Orbital Period
— yr
Epoch
2461088.5
Mean Anomaly
268.39°

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
2043-Mar-04 09:15 0.145703 AU
21796864 km
14.00 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
23.5

Orbit Quality

RMS
0.32632
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.

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