SpaceAtlas Space Object Data
NASA JPL SBDB · 2026 HA2

2026 HA2

2026 HA2 is an Aten-type near-Earth asteroid whose orbit lies mostly inside that of Earth, with a semi-major axis of 0.894 AU and a period of 0.85 yr.

Aten Observations: 55
Orbital Period · P
0.85 yr
v(q)
41 km/s
v(Q)
24.2 km/s
Diameter · ≈
0.03 km
TJ
6.61
Eccentricity · e
0.259

Orbit and dynamics

Between its closest point (0.663 AU) and its farthest (1.126 AU), the heliocentric distance changes by 0.463 AU over every revolution.

One full revolution takes 0.85 yr (309 days), computed from the semi-major axis of 0.894 AU.

An eccentricity of 0.259 makes the orbit moderately elongated.

The orbital plane is tilted 6.38° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 41 km/s at perihelion and falls to 24.2 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 = 25.75 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.03 km.

Observation record and orbit quality

Astrometry from 55 individual observations underpins this orbit; the fit leaves an RMS residual of 0.5126 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
0.8944 AU
Eccentricity
0.259
Perihelion
0.663 AU
Aphelion
1.12605 AU
Inclination
6.38°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
168.79°

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
2032-Jul-24 23:46 0.114107 AU
17070221 km
7.33 km/s
2037-Apr-14 22:47 0.012037 AU
1800779 km
7.37 km/s
2048-Apr-17 04:04 0.061725 AU
9233962 km
12.83 km/s
2060-Jul-24 21:06 0.113874 AU
17035242 km
9.36 km/s
2065-Apr-14 07:04 0.012248 AU
1832267 km
7.83 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
25.75

Orbit Quality

RMS
0.51257
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

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