SpaceAtlas Space Object Data
NASA JPL SBDB · 2005 EA

2005 EA

2005 EA belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.301 AU it takes 1.48 yr to circle the Sun.

Apollo Observations: 88
Orbital Period · P
1.48 yr
v(q)
55.7 km/s
v(Q)
12.2 km/s
Diameter · ≈
0.23 km
TJ
4.75
Eccentricity · e
0.6395

Orbit and dynamics

Between its closest point (0.469 AU) and its farthest (2.133 AU), the heliocentric distance changes by 1.664 AU over every revolution.

One full revolution takes 1.48 yr (542 days), computed from the semi-major axis of 1.301 AU.

The high eccentricity (0.639) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

The orbital plane is tilted 14.06° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 55.7 km/s at perihelion and falls to 12.2 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 = 20.94 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.23 km.

Observation record and orbit quality

Astrometry from 88 individual observations underpins this orbit; the fit leaves an RMS residual of 0.5407 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
1.301 AU
Eccentricity
0.6395
Perihelion
0.469 AU
Aphelion
2.132989 AU
Inclination
14.06°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
64.98°

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
2027-Oct-11 11:22 0.266276 AU
39834310 km
16.66 km/s
2030-Sep-13 19:41 0.399895 AU
59823505 km
17.32 km/s
2033-Aug-21 02:22 0.485795 AU
72673843 km
21.90 km/s
2048-May-18 20:56 0.497839 AU
74475715 km
18.81 km/s
2051-Mar-24 12:15 0.362273 AU
54195304 km
13.08 km/s
2054-Mar-21 11:33 0.169625 AU
25375497 km
17.49 km/s
2057-Mar-14 01:06 0.042531 AU
6362557 km
22.81 km/s
2060-Mar-05 11:25 0.224873 AU
33640496 km
28.69 km/s
2063-Feb-25 18:50 0.414377 AU
61989958 km
34.64 km/s
2064-Nov-16 12:46 0.474990 AU
71057455 km
35.43 km/s
2067-Nov-07 21:28 0.307233 AU
45961334 km
29.44 km/s
2070-Oct-28 17:11 0.187193 AU
28003695 km
23.60 km/s
2073-Oct-16 13:04 0.226191 AU
33837651 km
18.13 km/s
2076-Sep-22 01:30 0.365547 AU
54685128 km
16.16 km/s
2079-Aug-27 03:53 0.468492 AU
70085453 km
20.87 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
20.94

Orbit Quality

RMS
0.54069
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.

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