SpaceAtlas Space Object Data
NASA JPL SBDB · 2023 TH7

2023 TH7

2023 TH7 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.263 AU it takes 1.42 yr to circle the Sun.

Apollo Observations: 28
Orbital Period · P
1.42 yr
v(q)
49 km/s
v(Q)
14.3 km/s
Diameter · ≈
0.08 km
TJ
4.9
Eccentricity · e
0.5467

Orbit and dynamics

Between its closest point (0.572 AU) and its farthest (1.953 AU), the heliocentric distance changes by 1.381 AU over every revolution.

One full revolution takes 1.42 yr (518 days), computed from the semi-major axis of 1.263 AU.

The high eccentricity (0.547) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

The orbital plane is tilted 18.45° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 49 km/s at perihelion and falls to 14.3 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 = 23.33 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.08 km.

Observation record and orbit quality

Astrometry from 28 individual observations underpins this orbit; the fit leaves an RMS residual of 0.4596 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
1.263 AU
Eccentricity
0.5467
Perihelion
0.572 AU
Aphelion
1.953482 AU
Inclination
18.45°
Orbital Period
— yr
Epoch
2460235.5
Mean Anomaly
314.14°

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
2028-May-11 18:47 0.176620 AU
26421945 km
18.77 km/s
2062-Jun-04 17:34 0.265154 AU
39666455 km
28.61 km/s
2065-Mar-03 06:32 0.413952 AU
61926315 km
19.26 km/s
2067-Oct-27 09:05 0.079115 AU
11835429 km
19.70 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
23.33

Orbit Quality

RMS
0.45955
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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