SpaceAtlas Space Object Data
NASA JPL SBDB · 2014 HW

2014 HW

2014 HW belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.079 AU it takes 1.12 yr to circle the Sun.

Apollo Observations: 32
Orbital Period · P
1.12 yr
v(q)
32.2 km/s
v(Q)
25.5 km/s
Diameter · ≈
0.01 km
TJ
5.73
Eccentricity · e
0.115

Orbit and dynamics

The path is an ellipse reaching 0.955 AU from the Sun at perihelion and 1.203 AU at aphelion, a radial span of 0.248 AU.

Applying Kepler's third law to a = 1.079 AU gives an orbital period of 1.12 yr, or about 409 days.

An eccentricity of 0.115 makes the orbit moderately elongated.

Its inclination of 4.49° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 32.2 km/s at perihelion and falls to 25.5 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 = 28.4 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.01 km.

Observation record and orbit quality

The current orbit solution is based on 32 observations and has a weighted RMS residual of 0.5929 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
1.079 AU
Eccentricity
0.115
Perihelion
0.955 AU
Aphelion
1.203085 AU
Inclination
4.49°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
241.96°

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

Predicted close approaches to Earth, from NASA's Center for Near-Earth Object Studies (CNEOS).

Date (UTC)Miss distanceVelocity
2032-Apr-03 15:56 0.392344 AU
58693874 km
16.42 km/s
2033-Jan-29 18:55 0.210398 AU
31475068 km
4.32 km/s
2033-Sep-15 17:10 0.073420 AU
10983512 km
6.29 km/s
2051-Apr-27 04:02 0.004615 AU
690374 km
4.39 km/s
2052-Oct-03 23:20 0.162118 AU
24252565 km
15.20 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
28.4

Orbit Quality

RMS
0.59289
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.