SpaceAtlas Space Object Data
NASA JPL SBDB · 2014 EG45

2014 EG45

2014 EG45 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.608 AU it takes 2.04 yr to circle the Sun.

Apollo Observations: 156
Orbital Period · P
2.04 yr
v(q)
40.6 km/s
v(Q)
13.6 km/s
Diameter · ≈
0.15 km
TJ
4.11
Eccentricity · e
0.4981

Orbit and dynamics

The path is an ellipse reaching 0.807 AU from the Sun at perihelion and 2.409 AU at aphelion, a radial span of 1.602 AU.

Applying Kepler's third law to a = 1.608 AU gives an orbital period of 2.04 yr, or about 745 days.

The high eccentricity (0.498) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

A steep inclination of 25.51° carries it well above and below the ecliptic plane.

By the vis-viva equation its orbital speed rises to 40.6 km/s at perihelion and falls to 13.6 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 = 21.9 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.15 km.

Observation record and orbit quality

The current orbit solution is based on 156 observations and has a weighted RMS residual of 0.3417 arcseconds.

Condition code U = 1 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
1.608 AU
Eccentricity
0.4981
Perihelion
0.807 AU
Aphelion
2.408945 AU
Inclination
25.51°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
25.4°

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
2056-Sep-26 18:26 0.446437 AU
66786046 km
25.12 km/s
2058-Oct-04 22:24 0.307522 AU
46004658 km
19.12 km/s
2060-Oct-06 21:51 0.328760 AU
49181796 km
14.66 km/s
2062-Oct-01 05:47 0.474592 AU
70997972 km
13.42 km/s
2063-Feb-13 22:54 0.260675 AU
38996446 km
14.85 km/s
2065-Mar-04 04:18 0.011900 AU
1780162 km
18.19 km/s
2067-Mar-15 12:52 0.187136 AU
27995129 km
22.38 km/s
2069-Mar-25 08:54 0.391056 AU
58501088 km
27.35 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
21.9

Orbit Quality

RMS
0.34174
Condition
1
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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