SpaceAtlas Space Object Data
NASA JPL SBDB · 2008 TT26

2008 TT26

2008 TT26 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.346 AU it takes 1.56 yr to circle the Sun.

Apollo Observations: 385
Orbital Period · P
1.56 yr
v(q)
33.4 km/s
v(Q)
19.7 km/s
Diameter · ≈
0.07 km
TJ
4.84
Eccentricity · e
0.2574

Orbit and dynamics

The path is an ellipse reaching 0.999 AU from the Sun at perihelion and 1.692 AU at aphelion, a radial span of 0.693 AU.

Applying Kepler's third law to a = 1.346 AU gives an orbital period of 1.56 yr, or about 570 days.

An eccentricity of 0.257 makes the orbit moderately elongated.

The orbital plane is tilted 8.48° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 33.4 km/s at perihelion and falls to 19.7 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 = 23.6 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.07 km.

Observation record and orbit quality

The current orbit solution is based on 385 observations and has a weighted RMS residual of 0.2737 arcseconds.

Condition code U = 5 indicates a moderately constrained orbit; predictions decades ahead still carry noticeable uncertainty.

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
1.346 AU
Eccentricity
0.2574
Perihelion
0.999 AU
Aphelion
1.69246 AU
Inclination
8.48°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
100.14°

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
2033-Sep-25 22:06 0.159255 AU
23824179 km
9.36 km/s
2047-Nov-06 14:05 0.035783 AU
5353092 km
6.00 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
23.6

Orbit Quality

RMS
0.27371
Condition
5
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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