SpaceAtlas Space Object Data
NASA JPL SBDB · 2005 EN30

2005 EN30

2005 EN30 is an Amor-type near-Earth asteroid that approaches Earth from beyond our orbit without crossing it, orbiting the Sun at 1.675 AU once every 2.17 yr.

Amor Observations: 22
Orbital Period · P
2.17 yr
v(q)
31.2 km/s
v(Q)
17 km/s
Diameter · ≈
0.09 km
TJ
4.12
Eccentricity · e
0.2958

Orbit and dynamics

The path is an ellipse reaching 1.179 AU from the Sun at perihelion and 2.17 AU at aphelion, a radial span of 0.991 AU.

Applying Kepler's third law to a = 1.675 AU gives an orbital period of 2.17 yr, or about 792 days.

An eccentricity of 0.296 makes the orbit moderately elongated.

A steep inclination of 20.4° carries it well above and below the ecliptic plane.

By the vis-viva equation its orbital speed rises to 31.2 km/s at perihelion and falls to 17 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 = 23 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.09 km.

Observation record and orbit quality

The current orbit solution is based on 22 observations and has a weighted RMS residual of 0.6071 arcseconds.

Condition code U = 9 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
1.675 AU
Eccentricity
0.2958
Perihelion
1.179 AU
Aphelion
2.170465 AU
Inclination
20.4°
Orbital Period
— yr
Epoch
2453436.5
Mean Anomaly
352.62°

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
23.0

Orbit Quality

RMS
0.60708
Condition
9
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.

Keep exploring

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