SpaceAtlas Space Object Data
NASA JPL SBDB · 2014 NA39

2014 NA39

2014 NA39 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.357 AU it takes 1.58 yr to circle the Sun.

Apollo Observations: 14
Orbital Period · P
1.58 yr
v(q)
34.1 km/s
v(Q)
19.1 km/s
Diameter · ≈
0.05 km
TJ
4.76
Eccentricity · e
0.2816

Orbit and dynamics

Between its closest point (0.975 AU) and its farthest (1.739 AU), the heliocentric distance changes by 0.764 AU over every revolution.

One full revolution takes 1.58 yr (577 days), computed from the semi-major axis of 1.357 AU.

An eccentricity of 0.282 makes the orbit moderately elongated.

The orbital plane is tilted 19.24° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 34.1 km/s at perihelion and falls to 19.1 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 = 24.1 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.05 km.

Observation record and orbit quality

Astrometry from 14 individual observations underpins this orbit; the fit leaves an RMS residual of 0.641 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
1.357 AU
Eccentricity
0.2816
Perihelion
0.975 AU
Aphelion
1.739131 AU
Inclination
19.24°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
233.15°

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
2033-Feb-17 04:26 0.276741 AU
41399876 km
11.87 km/s
2033-Jul-03 10:17 0.163703 AU
24489625 km
9.78 km/s
2044-Jan-28 11:58 0.339025 AU
50717392 km
10.78 km/s
2044-Jul-10 18:34 0.086574 AU
12951276 km
14.96 km/s
2052-Feb-19 09:44 0.281812 AU
42158435 km
14.92 km/s
2063-Jul-06 10:20 0.092994 AU
13911701 km
11.98 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
24.1

Orbit Quality

RMS
0.64096
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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