SpaceAtlas Space Object Data
NASA JPL SBDB · 2024 TN2

2024 TN2

2024 TN2 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.127 AU it takes 1.20 yr to circle the Sun.

Apollo Observations: 43
Orbital Period · P
1.20 yr
v(q)
66.7 km/s
v(Q)
11.8 km/s
Diameter · ≈
0.03 km
TJ
5.28
Eccentricity · e
0.6991

Orbit and dynamics

The path is an ellipse reaching 0.339 AU from the Sun at perihelion and 1.915 AU at aphelion, a radial span of 1.576 AU.

Applying Kepler's third law to a = 1.127 AU gives an orbital period of 1.20 yr, or about 437 days.

The high eccentricity (0.699) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

The orbital plane is tilted 7° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 66.7 km/s at perihelion and falls to 11.8 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 = 25.31 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.03 km.

Observation record and orbit quality

The current orbit solution is based on 43 observations and has a weighted RMS residual of 0.3551 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
1.127 AU
Eccentricity
0.6991
Perihelion
0.339 AU
Aphelion
1.914886 AU
Inclination
7.0°
Orbital Period
— yr
Epoch
2460588.5
Mean Anomaly
313.54°

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-Jun-18 11:50 0.143738 AU
21502969 km
17.84 km/s
2030-Oct-08 08:18 0.018932 AU
2832171 km
24.59 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
25.31

Orbit Quality

RMS
0.35512
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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