SpaceAtlas Space Object Data
NASA JPL SBDB · 2023 KY3

2023 KY3

2023 KY3 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.285 AU it takes 1.46 yr to circle the Sun.

Apollo Observations: 114
Orbital Period · P
1.46 yr
v(q)
35.5 km/s
v(Q)
19.4 km/s
Diameter · ≈
0.02 km
TJ
4.99
Eccentricity · e
0.2921

Orbit and dynamics

Between its closest point (0.91 AU) and its farthest (1.66 AU), the heliocentric distance changes by 0.75 AU over every revolution.

One full revolution takes 1.46 yr (532 days), computed from the semi-major axis of 1.285 AU.

An eccentricity of 0.292 makes the orbit moderately elongated.

The orbital plane is tilted 7.85° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 35.5 km/s at perihelion and falls to 19.4 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

No direct size measurement is available; from an absolute magnitude of H = 26.14 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.02 km.

Observation record and orbit quality

Astrometry from 114 individual observations underpins this orbit; the fit leaves an RMS residual of 0.5351 arcseconds.

Condition code U = 6 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
1.285 AU
Eccentricity
0.2921
Perihelion
0.91 AU
Aphelion
1.660349 AU
Inclination
7.85°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
64.81°

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
2038-Dec-08 07:25 0.373865 AU
55929393 km
7.50 km/s
2039-Jun-04 04:28 0.040993 AU
6132517 km
11.13 km/s
2042-Jan-22 20:29 0.119093 AU
17816132 km
9.57 km/s
2054-Nov-27 08:22 0.438280 AU
65565798 km
8.42 km/s
2055-Jun-12 08:42 0.162049 AU
24242153 km
14.89 km/s
2071-Jun-19 15:39 0.285828 AU
42759225 km
18.75 km/s
2077-Jan-09 07:50 0.275415 AU
41201511 km
17.89 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
26.14

Orbit Quality

RMS
0.53511
Condition
6
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

Explore asteroids, comets and near-Earth objects with JPL orbital data.