SpaceAtlas Space Object Data
NASA JPL SBDB · 2005 EU2

2005 EU2

2005 EU2 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.508 AU it takes 1.85 yr to circle the Sun.

Apollo Observations: 74
Orbital Period · P
1.85 yr
v(q)
35.1 km/s
v(Q)
16.8 km/s
Diameter · ≈
0.09 km
TJ
4.46
Eccentricity · e
0.3533

Orbit and dynamics

The path is an ellipse reaching 0.975 AU from the Sun at perihelion and 2.041 AU at aphelion, a radial span of 1.066 AU.

Applying Kepler's third law to a = 1.508 AU gives an orbital period of 1.85 yr, or about 676 days.

An eccentricity of 0.353 makes the orbit moderately elongated.

Its inclination of 4.58° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 35.1 km/s at perihelion and falls to 16.8 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 = 23.1 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 74 observations and has a weighted RMS residual of 0.4621 arcseconds.

Condition code U = 2 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
1.508 AU
Eccentricity
0.3533
Perihelion
0.975 AU
Aphelion
2.040776 AU
Inclination
4.58°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
147.84°

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
2029-Jan-29 17:24 0.498802 AU
74619678 km
5.58 km/s
2029-Jun-27 08:14 0.293320 AU
43880014 km
14.86 km/s
2031-Feb-21 20:08 0.451399 AU
67528361 km
20.05 km/s
2042-Jun-05 19:35 0.088645 AU
13261121 km
7.87 km/s
2055-Apr-22 10:24 0.042947 AU
6424778 km
5.99 km/s
2068-Mar-29 17:57 0.006098 AU
912192 km
6.92 km/s
2079-Feb-28 08:40 0.329465 AU
49287310 km
16.78 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
23.1

Orbit Quality

RMS
0.46211
Condition
2
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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