SpaceAtlas Space Object Data
NASA JPL SBDB · 2004 XG29

2004 XG29

2004 XG29 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.41 AU it takes 1.67 yr to circle the Sun.

Apollo Observations: 132
Orbital Period · P
1.67 yr
v(q)
34.7 km/s
v(Q)
18.1 km/s
Diameter · ≈
0.03 km
TJ
4.68
Eccentricity · e
0.3135

Orbit and dynamics

Between its closest point (0.968 AU) and its farthest (1.852 AU), the heliocentric distance changes by 0.884 AU over every revolution.

One full revolution takes 1.67 yr (612 days), computed from the semi-major axis of 1.41 AU.

An eccentricity of 0.314 makes the orbit moderately elongated.

Its inclination of 0.15° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 34.7 km/s at perihelion and falls to 18.1 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 = 25.66 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.03 km.

Observation record and orbit quality

Astrometry from 132 individual observations underpins this orbit; the fit leaves an RMS residual of 0.6381 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
1.41 AU
Eccentricity
0.3135
Perihelion
0.968 AU
Aphelion
1.852035 AU
Inclination
0.15°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
315.87°

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
2056-Sep-05 21:23 0.421720 AU
63088344 km
18.62 km/s
2061-Sep-14 11:25 0.273607 AU
40931077 km
14.28 km/s
2062-Feb-14 17:09 0.423070 AU
63290355 km
5.54 km/s
2066-Sep-24 00:26 0.134908 AU
20181973 km
10.09 km/s
2067-Jan-27 00:44 0.327165 AU
48943118 km
3.03 km/s
2071-Oct-06 14:32 0.029256 AU
4376657 km
6.58 km/s
2076-Oct-09 05:12 0.009327 AU
1395302 km
6.03 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
25.66

Orbit Quality

RMS
0.63811
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.

Keep exploring

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