SpaceAtlas Space Object Data
NASA JPL SBDB · 2014 EH45

2014 EH45

2014 EH45 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.188 AU it takes 1.29 yr to circle the Sun.

Apollo Observations: 61
Orbital Period · P
1.29 yr
v(q)
33.4 km/s
v(Q)
22.4 km/s
Diameter · ≈
0.1 km
TJ
5.25
Eccentricity · e
0.1977

Orbit and dynamics

Between its closest point (0.953 AU) and its farthest (1.423 AU), the heliocentric distance changes by 0.47 AU over every revolution.

One full revolution takes 1.29 yr (473 days), computed from the semi-major axis of 1.188 AU.

An eccentricity of 0.198 makes the orbit moderately elongated.

A steep inclination of 21.26° carries it well above and below the ecliptic plane.

By the vis-viva equation its orbital speed rises to 33.4 km/s at perihelion and falls to 22.4 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 = 22.84 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.1 km.

Observation record and orbit quality

Astrometry from 61 individual observations underpins this orbit; the fit leaves an RMS residual of 0.501 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
1.188 AU
Eccentricity
0.1977
Perihelion
0.953 AU
Aphelion
1.422868 AU
Inclination
21.26°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
87.45°

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-Mar-30 08:22 0.291063 AU
43542439 km
16.87 km/s
2027-Oct-14 06:40 0.441054 AU
65980735 km
10.61 km/s
2036-Mar-29 02:14 0.181790 AU
27195450 km
11.16 km/s
2036-Sep-17 03:41 0.143534 AU
21472397 km
11.38 km/s
2045-Feb-27 00:04 0.468404 AU
70072279 km
10.59 km/s
2045-Sep-20 21:17 0.334644 AU
50061998 km
18.03 km/s
2049-Mar-31 19:31 0.192218 AU
28755397 km
14.48 km/s
2049-Oct-02 04:25 0.357505 AU
53481989 km
10.78 km/s
2058-Mar-24 14:37 0.262021 AU
39197737 km
10.90 km/s
2058-Sep-16 18:16 0.118219 AU
17685241 km
12.50 km/s
2062-Mar-25 21:12 0.454548 AU
67999471 km
20.99 km/s
2067-Sep-24 15:43 0.441025 AU
65976460 km
20.70 km/s
2071-Apr-01 21:40 0.131257 AU
19635701 km
12.68 km/s
2071-Sep-24 12:07 0.269322 AU
40289997 km
10.79 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
22.84

Orbit Quality

RMS
0.50104
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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