SpaceAtlas Space Object Data
NASA JPL SBDB · 2005 EN70

2005 EN70

2005 EN70 is an Amor-type near-Earth asteroid that approaches Earth from beyond our orbit without crossing it, orbiting the Sun at 1.782 AU once every 2.38 yr.

Amor Observations: 146
Orbital Period · P
2.38 yr
v(q)
32.8 km/s
v(Q)
15.2 km/s
Diameter · ≈
0.23 km
TJ
3.67
Eccentricity · e
0.3674

Orbit and dynamics

The path is an ellipse reaching 1.127 AU from the Sun at perihelion and 2.437 AU at aphelion, a radial span of 1.31 AU.

Applying Kepler's third law to a = 1.782 AU gives an orbital period of 2.38 yr, or about 869 days.

An eccentricity of 0.367 makes the orbit moderately elongated.

A steep inclination of 46.14° carries it well above and below the ecliptic plane.

By the vis-viva equation its orbital speed rises to 32.8 km/s at perihelion and falls to 15.2 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 = 20.9 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.23 km.

Observation record and orbit quality

The current orbit solution is based on 146 observations and has a weighted RMS residual of 0.4657 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
1.782 AU
Eccentricity
0.3674
Perihelion
1.127 AU
Aphelion
2.436707 AU
Inclination
46.14°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
333.44°

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
2043-Mar-22 01:11 0.211132 AU
31584887 km
24.68 km/s
2055-Mar-04 01:25 0.491651 AU
73549921 km
28.32 km/s
2062-Mar-27 10:03 0.388719 AU
58151520 km
25.46 km/s
2074-Mar-10 09:40 0.285253 AU
42673199 km
26.01 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
20.9

Orbit Quality

RMS
0.46568
Condition
0
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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