SpaceAtlas Space Object Data
NASA JPL SBDB · 2026 RZ

2026 RZ

2026 RZ belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.349 AU it takes 1.57 yr to circle the Sun.

Apollo Observations: 46
Orbital Period · P
1.57 yr
v(q)
38.8 km/s
v(Q)
17 km/s
Diameter · ≈
0 km
TJ
4.79
Eccentricity · e
0.3919

Orbit and dynamics

Between its closest point (0.82 AU) and its farthest (1.878 AU), the heliocentric distance changes by 1.058 AU over every revolution.

One full revolution takes 1.57 yr (572 days), computed from the semi-major axis of 1.349 AU.

An eccentricity of 0.392 makes the orbit moderately elongated.

Its inclination of 3.24° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 38.8 km/s at perihelion and falls to 17 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 = 29.5 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0 km.

Observation record and orbit quality

Astrometry from 46 individual observations underpins this orbit; the fit leaves an RMS residual of 0.4705 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
1.349 AU
Eccentricity
0.3919
Perihelion
0.82 AU
Aphelion
1.877673 AU
Inclination
3.24°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
338.69°

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
2031-Apr-05 17:09 0.118302 AU
17697769 km
15.22 km/s
2073-Sep-12 07:06 0.001737 AU
259787 km
14.91 km/s
2078-Apr-14 09:48 0.044695 AU
6686310 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
29.5

Orbit Quality

RMS
0.47046
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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