SpaceAtlas Space Object Data
NASA JPL SBDB · 2023 KZ

2023 KZ

2023 KZ is an Amor-type near-Earth asteroid that approaches Earth from beyond our orbit without crossing it, orbiting the Sun at 1.178 AU once every 1.28 yr.

Amor Observations: 52
Orbital Period · P
1.28 yr
v(q)
31 km/s
v(Q)
24.3 km/s
Diameter · ≈
0.01 km
TJ
5.35
Eccentricity · e
0.1214

Orbit and dynamics

Between its closest point (1.035 AU) and its farthest (1.321 AU), the heliocentric distance changes by 0.286 AU over every revolution.

One full revolution takes 1.28 yr (467 days), computed from the semi-major axis of 1.178 AU.

An eccentricity of 0.121 makes the orbit moderately elongated.

The orbital plane is tilted 7.73° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 31 km/s at perihelion and falls to 24.3 km/s at aphelion.

Its perihelion lies just outside Earth's orbit, which is why it is classed as Earth-approaching rather than Earth-crossing.

Size and surface

No direct size measurement is available; from an absolute magnitude of H = 27.28 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.01 km.

Observation record and orbit quality

Astrometry from 52 individual observations underpins this orbit; the fit leaves an RMS residual of 0.5638 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
1.178 AU
Eccentricity
0.1214
Perihelion
1.035 AU
Aphelion
1.321009 AU
Inclination
7.73°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
140.23°

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-Dec-08 23:52 0.326486 AU
48841638 km
6.81 km/s
2032-Apr-28 21:15 0.239466 AU
35823607 km
10.04 km/s
2037-Jul-02 01:42 0.342762 AU
51276467 km
13.74 km/s
2055-May-12 22:37 0.029212 AU
4370044 km
5.84 km/s
2059-Dec-22 20:45 0.316250 AU
47310394 km
6.47 km/s
2064-Apr-21 04:33 0.404314 AU
60484457 km
13.76 km/s
2064-Oct-06 15:53 0.297109 AU
44446910 km
5.41 km/s
2069-Feb-01 00:33 0.261739 AU
39155543 km
4.25 km/s
2069-Jun-22 11:48 0.265243 AU
39679826 km
10.04 km/s
2073-Nov-10 01:14 0.331018 AU
49519517 km
6.74 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
27.28

Orbit Quality

RMS
0.56381
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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