SpaceAtlas Space Object Data
NASA JPL SBDB · 2023 XD13

2023 XD13

2023 XD13 is an Aten-type near-Earth asteroid whose orbit lies mostly inside that of Earth, with a semi-major axis of 0.738 AU and a period of 0.63 yr.

Aten Observations: 12
Orbital Period · P
0.63 yr
v(q)
54.2 km/s
v(Q)
22.2 km/s
Diameter · ≈
0.03 km
TJ
7.73
Eccentricity · e
0.4183

Orbit and dynamics

The path is an ellipse reaching 0.429 AU from the Sun at perihelion and 1.046 AU at aphelion, a radial span of 0.617 AU.

Applying Kepler's third law to a = 0.738 AU gives an orbital period of 0.63 yr, or about 231 days.

The high eccentricity (0.418) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

The orbital plane is tilted 8.78° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 54.2 km/s at perihelion and falls to 22.2 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 = 25.08 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.03 km.

Observation record and orbit quality

The current orbit solution is based on 12 observations and has a weighted RMS residual of 0.3436 arcseconds.

Condition code U = 8 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
0.7378 AU
Eccentricity
0.4183
Perihelion
0.429 AU
Aphelion
1.046422 AU
Inclination
8.78°
Orbital Period
— yr
Epoch
2460291.5
Mean Anomaly
188.7°

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
2028-Nov-15 08:12 0.168681 AU
25234323 km
17.63 km/s
2030-Dec-29 15:54 0.061770 AU
9240665 km
10.56 km/s
2035-Nov-14 18:08 0.055023 AU
8231289 km
12.12 km/s
2037-Dec-31 16:02 0.085047 AU
12722908 km
15.69 km/s
2040-Nov-23 04:53 0.216466 AU
32382805 km
25.54 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
25.08

Orbit Quality

RMS
0.34358
Condition
8
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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