SpaceAtlas Space Object Data
NASA JPL SBDB · 2023 HT3

2023 HT3

2023 HT3 is an Aten-type near-Earth asteroid whose orbit lies mostly inside that of Earth, with a semi-major axis of 0.814 AU and a period of 0.73 yr.

Aten Observations: 78
Orbital Period · P
0.73 yr
v(q)
46.5 km/s
v(Q)
23.4 km/s
Diameter · ≈
0.06 km
TJ
7.06
Eccentricity · e
0.3301

Orbit and dynamics

Between its closest point (0.546 AU) and its farthest (1.083 AU), the heliocentric distance changes by 0.537 AU over every revolution.

One full revolution takes 0.73 yr (268 days), computed from the semi-major axis of 0.814 AU.

An eccentricity of 0.33 makes the orbit moderately elongated.

A steep inclination of 25.73° carries it well above and below the ecliptic plane.

By the vis-viva equation its orbital speed rises to 46.5 km/s at perihelion and falls to 23.4 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 = 24.05 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.06 km.

Observation record and orbit quality

Astrometry from 78 individual observations underpins this orbit; the fit leaves an RMS residual of 0.4246 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
0.8143 AU
Eccentricity
0.3301
Perihelion
0.546 AU
Aphelion
1.0831 AU
Inclination
25.73°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
230.35°

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

No close approaches to Earth are currently on record for this object.

Physical Parameters

Diameter
— km
Albedo
—
Density
— g/cm³
Rotation Period
— h
Absolute Magnitude
24.05

Orbit Quality

RMS
0.42458
Condition
5
Orbit ID
—
Data source: NASA JPL Small-Body Database . 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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