SpaceAtlas Space Object Data
NASA JPL SBDB · 2014 SE145

2014 SE145

2014 SE145 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 2.234 AU it takes 3.34 yr to circle the Sun.

Apollo Observations: 15
Orbital Period · P
3.34 yr
v(q)
36.9 km/s
v(Q)
10.8 km/s
Diameter · ≈
0.01 km
TJ
3.41
Eccentricity · e
0.5482

Orbit and dynamics

The path is an ellipse reaching 1.009 AU from the Sun at perihelion and 3.459 AU at aphelion, a radial span of 2.45 AU.

Applying Kepler's third law to a = 2.234 AU gives an orbital period of 3.34 yr, or about 1,220 days.

The high eccentricity (0.548) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

The orbital plane is tilted 8.41° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 36.9 km/s at perihelion and falls to 10.8 km/s at aphelion.

Size and surface

No direct size measurement is available; from an absolute magnitude of H = 27.2 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.01 km.

Observation record and orbit quality

The current orbit solution is based on 15 observations and has a weighted RMS residual of 0.2477 arcseconds.

Condition code U = 7 signals a poorly constrained orbit, so its future path should be treated as provisional.

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
2.234 AU
Eccentricity
0.5482
Perihelion
1.009 AU
Aphelion
3.458679 AU
Inclination
8.41°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
184.15°

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
2044-Nov-06 19:22 0.241038 AU
36058750 km
19.81 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
27.2

Orbit Quality

RMS
0.24766
Condition
7
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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