SpaceAtlas Space Object Data
NASA JPL SBDB · 2025 HO12

2025 HO12

2025 HO12 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.109 AU it takes 1.17 yr to circle the Sun.

Apollo Observations: 20
Orbital Period · P
1.17 yr
v(q)
40.8 km/s
v(Q)
19.6 km/s
Diameter · ≈
0.01 km
TJ
5.55
Eccentricity · e
0.3519

Orbit and dynamics

Between its closest point (0.719 AU) and its farthest (1.499 AU), the heliocentric distance changes by 0.78 AU over every revolution.

One full revolution takes 1.17 yr (427 days), computed from the semi-major axis of 1.109 AU.

An eccentricity of 0.352 makes the orbit moderately elongated.

The orbital plane is tilted 7.13° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 40.8 km/s at perihelion and falls to 19.6 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 = 28.32 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.01 km.

Observation record and orbit quality

Astrometry from 20 individual observations underpins this orbit; the fit leaves an RMS residual of 0.5254 arcseconds.

Condition code U = 7 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
1.109 AU
Eccentricity
0.3519
Perihelion
0.719 AU
Aphelion
1.499257 AU
Inclination
7.13°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
42.06°

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
2030-Oct-19 04:59 0.028158 AU
4212320 km
10.91 km/s
2032-Apr-25 08:00 0.008361 AU
1250779 km
11.38 km/s
2037-Oct-24 21:16 0.075717 AU
11327083 km
8.75 km/s
2039-May-01 00:59 0.108564 AU
16240941 km
14.41 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
28.32

Orbit Quality

RMS
0.52537
Condition
7
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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