SpaceAtlas Space Object Data
NASA JPL SBDB · 2015 NZ13

2015 NZ13

2015 NZ13 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 2.016 AU it takes 2.86 yr to circle the Sun.

Apollo Observations: 128
Orbital Period · P
2.86 yr
v(q)
59.8 km/s
v(Q)
7.4 km/s
Diameter · ≈
0.27 km
TJ
3.35
Eccentricity · e
0.7805

Orbit and dynamics

Between its closest point (0.442 AU) and its farthest (3.589 AU), the heliocentric distance changes by 3.147 AU over every revolution.

One full revolution takes 2.86 yr (1,046 days), computed from the semi-major axis of 2.016 AU.

The high eccentricity (0.78) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

The orbital plane is tilted 6.57° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 59.8 km/s at perihelion and falls to 7.4 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

The measured diameter is 0.26 km, a value from direct size determination rather than from brightness alone.

A geometric albedo of 0.152 points to a comparatively bright, reflective surface.

Observation record and orbit quality

Astrometry from 128 individual observations underpins this orbit; the fit leaves an RMS residual of 0.3411 arcseconds.

Condition code U = 3 indicates a moderately constrained orbit; predictions decades ahead still carry noticeable uncertainty.

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
2.016 AU
Eccentricity
0.7805
Perihelion
0.442 AU
Aphelion
3.589488 AU
Inclination
6.57°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
269.38°

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

No close approaches to Earth are currently on record for this object.

Physical Parameters

Diameter
0.258 km
Albedo
0.152
Density
— g/cm³
Rotation Period
— h
Absolute Magnitude
20.6

Orbit Quality

RMS
0.34109
Condition
3
Orbit ID
—
Data source: NASA JPL Small-Body Database . 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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