SpaceAtlas Space Object Data
NASA JPL SBDB · 2014 HO123

2014 HO123

2014 HO123 is an Amor-type near-Earth asteroid that approaches Earth from beyond our orbit without crossing it, orbiting the Sun at 2.311 AU once every 3.51 yr.

Amor Observations: 60
Orbital Period · P
3.51 yr
v(q)
35.7 km/s
v(Q)
10.7 km/s
Diameter · ≈
0.27 km
TJ
3.35
Eccentricity · e
0.5381

Orbit and dynamics

The path is an ellipse reaching 1.068 AU from the Sun at perihelion and 3.555 AU at aphelion, a radial span of 2.487 AU.

Applying Kepler's third law to a = 2.311 AU gives an orbital period of 3.51 yr, or about 1,283 days.

The high eccentricity (0.538) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

The orbital plane is tilted 12.35° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 35.7 km/s at perihelion and falls to 10.7 km/s at aphelion.

Its perihelion lies just outside Earth's orbit, which is why it is classed as Earth-approaching rather than Earth-crossing.

Size and surface

No direct size measurement is available; from an absolute magnitude of H = 20.6 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.27 km.

Observation record and orbit quality

The current orbit solution is based on 60 observations and has a weighted RMS residual of 0.6626 arcseconds.

Condition code U = 0 means the orbit is very well determined, leaving only a small uncertainty in the future ephemeris.

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
2.311 AU
Eccentricity
0.5381
Perihelion
1.068 AU
Aphelion
3.554549 AU
Inclination
12.35°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
134.75°

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
20.6

Orbit Quality

RMS
0.66261
Condition
0
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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