SpaceAtlas Space Object Data
NASA JPL SBDB · 2023 HA3

2023 HA3

2023 HA3 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.907 AU it takes 2.63 yr to circle the Sun.

Apollo Observations: 31
Orbital Period · P
2.63 yr
v(q)
51.6 km/s
v(Q)
9 km/s
Diameter · ≈
0.25 km
TJ
3.57
Eccentricity · e
0.7025

Orbit and dynamics

Between its closest point (0.568 AU) and its farthest (3.247 AU), the heliocentric distance changes by 2.679 AU over every revolution.

One full revolution takes 2.63 yr (962 days), computed from the semi-major axis of 1.907 AU.

The high eccentricity (0.703) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

The orbital plane is tilted 11.19° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 51.6 km/s at perihelion and falls to 9 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 = 20.75 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.25 km.

Observation record and orbit quality

Astrometry from 31 individual observations underpins this orbit; the fit leaves an RMS residual of 0.4599 arcseconds.

Condition code U = 6 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
1.907 AU
Eccentricity
0.7025
Perihelion
0.568 AU
Aphelion
3.246668 AU
Inclination
11.19°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
23.83°

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
2031-May-30 20:38 0.217061 AU
32471828 km
18.42 km/s
2036-Dec-05 09:33 0.237827 AU
35578403 km
26.72 km/s
2039-Apr-28 17:48 0.460910 AU
68951140 km
35.14 km/s
2044-Oct-05 19:49 0.372088 AU
55663640 km
19.30 km/s
2052-Aug-06 20:48 0.427056 AU
63886698 km
22.42 km/s
2060-May-27 08:28 0.197027 AU
29474822 km
19.55 km/s
2065-Dec-03 21:12 0.197998 AU
29620121 km
25.52 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
20.75

Orbit Quality

RMS
0.45986
Condition
6
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

Explore asteroids, comets and near-Earth objects with JPL orbital data.