SpaceAtlas Space Object Data
NASA JPL SBDB · 2026 JZ2

2026 JZ2

2026 JZ2 is an Aten-type near-Earth asteroid whose orbit lies mostly inside that of Earth, with a semi-major axis of 0.99 AU and a period of 0.98 yr.

Aten Observations: 41
Orbital Period · P
0.98 yr
v(q)
35.9 km/s
v(Q)
25 km/s
Diameter · ≈
0.01 km
TJ
6.11
Eccentricity · e
0.1786

Orbit and dynamics

Between its closest point (0.813 AU) and its farthest (1.166 AU), the heliocentric distance changes by 0.353 AU over every revolution.

One full revolution takes 0.98 yr (360 days), computed from the semi-major axis of 0.99 AU.

An eccentricity of 0.179 makes the orbit moderately elongated.

The orbital plane is tilted 5.14° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 35.9 km/s at perihelion and falls to 25 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 = 28.14 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.01 km.

Observation record and orbit quality

Astrometry from 41 individual observations underpins this orbit; the fit leaves an RMS residual of 0.502 arcseconds.

Condition code U = 5 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
0.9896 AU
Eccentricity
0.1786
Perihelion
0.813 AU
Aphelion
1.166343 AU
Inclination
5.14°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
119.1°

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
2027-May-21 20:41 0.091122 AU
13631669 km
3.83 km/s
2028-Mar-02 15:08 0.169839 AU
25407541 km
4.56 km/s
2028-Jun-22 21:01 0.149920 AU
22427724 km
4.33 km/s
2029-Feb-01 07:57 0.186434 AU
27890154 km
5.61 km/s
2029-Jul-20 10:54 0.172972 AU
25876289 km
4.45 km/s
2030-Jan-06 18:00 0.179127 AU
26797077 km
5.74 km/s
2030-Aug-19 01:37 0.165679 AU
24785234 km
4.02 km/s
2030-Dec-11 03:10 0.150525 AU
22518216 km
5.18 km/s
2031-Nov-07 17:45 0.096371 AU
14416843 km
4.16 km/s
2032-Oct-16 13:30 0.052698 AU
7883523 km
5.60 km/s
2033-Oct-09 04:50 0.115261 AU
17242831 km
8.39 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
28.14

Orbit Quality

RMS
0.50204
Condition
5
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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