SpaceAtlas Space Object Data
NASA JPL SBDB · 2008 XM1

2008 XM1

2008 XM1 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 2.357 AU it takes 3.62 yr to circle the Sun.

Apollo Observations: 137
Orbital Period · P
3.62 yr
v(q)
56.2 km/s
v(Q)
6.7 km/s
Diameter · ≈
0.14 km
TJ
3.04
Eccentricity · e
0.7869

Orbit and dynamics

Between its closest point (0.502 AU) and its farthest (4.212 AU), the heliocentric distance changes by 3.71 AU over every revolution.

One full revolution takes 3.62 yr (1,322 days), computed from the semi-major axis of 2.357 AU.

The high eccentricity (0.787) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

The orbital plane is tilted 5.05° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 56.2 km/s at perihelion and falls to 6.7 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 = 22 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.14 km.

Observation record and orbit quality

Astrometry from 137 individual observations underpins this orbit; the fit leaves an RMS residual of 0.4789 arcseconds.

Condition code U = 0 means the orbit is very well determined, leaving only a small uncertainty in the future ephemeris.

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
2.357 AU
Eccentricity
0.7869
Perihelion
0.502 AU
Aphelion
4.211723 AU
Inclination
5.05°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
277.53°

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-Apr-22 15:47 0.452721 AU
67726101 km
22.14 km/s
2038-Jan-10 02:11 0.324837 AU
48594865 km
16.09 km/s
2045-Jun-27 14:25 0.036560 AU
5469316 km
25.30 km/s
2048-Nov-21 14:06 0.428906 AU
64163472 km
37.42 km/s
2056-May-11 03:56 0.382292 AU
57190125 km
17.89 km/s
2067-Apr-11 13:20 0.466929 AU
69851537 km
23.77 km/s
2078-Jan-30 04:08 0.401873 AU
60119325 km
19.08 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
22.0

Orbit Quality

RMS
0.47893
Condition
0
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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