SpaceAtlas Space Object Data
NASA JPL SBDB · 2023 HB3

2023 HB3

2023 HB3 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.077 AU it takes 1.12 yr to circle the Sun.

Apollo Observations: 14
Orbital Period · P
1.12 yr
v(q)
41.2 km/s
v(Q)
20 km/s
Diameter · ≈
0.03 km
TJ
5.65
Eccentricity · e
0.3465

Orbit and dynamics

The path is an ellipse reaching 0.704 AU from the Sun at perihelion and 1.45 AU at aphelion, a radial span of 0.746 AU.

Applying Kepler's third law to a = 1.077 AU gives an orbital period of 1.12 yr, or about 408 days.

An eccentricity of 0.346 makes the orbit moderately elongated.

The orbital plane is tilted 16.34° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 41.2 km/s at perihelion and falls to 20 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 = 25.68 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 14 observations and has a weighted RMS residual of 0.5071 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
1.077 AU
Eccentricity
0.3465
Perihelion
0.704 AU
Aphelion
1.45018 AU
Inclination
16.34°
Orbital Period
— yr
Epoch
2460052.5
Mean Anomaly
83.96°

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
25.68

Orbit Quality

RMS
0.50707
Condition
8
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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