SpaceAtlas Space Object Data
NASA JPL SBDB · 2014 SC145

2014 SC145

2014 SC145 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.222 AU it takes 1.35 yr to circle the Sun.

Apollo Observations: 43
Orbital Period · P
1.35 yr
v(q)
33.2 km/s
v(Q)
21.8 km/s
Diameter · ≈
0.03 km
TJ
5.15
Eccentricity · e
0.2066

Orbit and dynamics

The path is an ellipse reaching 0.969 AU from the Sun at perihelion and 1.474 AU at aphelion, a radial span of 0.505 AU.

Applying Kepler's third law to a = 1.222 AU gives an orbital period of 1.35 yr, or about 493 days.

An eccentricity of 0.207 makes the orbit moderately elongated.

A steep inclination of 20.16° carries it well above and below the ecliptic plane.

By the vis-viva equation its orbital speed rises to 33.2 km/s at perihelion and falls to 21.8 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 = 25.7 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.03 km.

Observation record and orbit quality

The current orbit solution is based on 43 observations and has a weighted RMS residual of 0.3789 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
1.222 AU
Eccentricity
0.2066
Perihelion
0.969 AU
Aphelion
1.474465 AU
Inclination
20.16°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
210.39°

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
2046-Jan-22 05:26 0.340464 AU
50932720 km
13.34 km/s
2057-Apr-06 10:13 0.465685 AU
69665541 km
11.41 km/s
2060-Sep-02 16:45 0.413496 AU
61858146 km
19.56 km/s
2061-Mar-17 17:30 0.380191 AU
56875807 km
11.30 km/s
2064-Sep-19 15:39 0.016206 AU
2424332 km
12.63 km/s
2065-Feb-25 14:04 0.312568 AU
46759532 km
10.80 km/s
2068-Oct-07 02:22 0.135320 AU
20243515 km
11.31 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
25.7

Orbit Quality

RMS
0.37892
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.

Keep exploring

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