SpaceAtlas Space Object Data
NASA JPL SBDB · 2006 XR4

2006 XR4

2006 XR4 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.04 AU it takes 1.06 yr to circle the Sun.

Apollo Observations: 40
Orbital Period · P
1.06 yr
v(q)
38.5 km/s
v(Q)
22.2 km/s
Diameter · ≈
0.02 km
TJ
5.85
Eccentricity · e
0.2691

Orbit and dynamics

Between its closest point (0.76 AU) and its farthest (1.32 AU), the heliocentric distance changes by 0.56 AU over every revolution.

One full revolution takes 1.06 yr (387 days), computed from the semi-major axis of 1.04 AU.

An eccentricity of 0.269 makes the orbit moderately elongated.

The orbital plane is tilted 10.95° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 38.5 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 = 26.16 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.02 km.

Observation record and orbit quality

Astrometry from 40 individual observations underpins this orbit; the fit leaves an RMS residual of 0.8511 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
1.04 AU
Eccentricity
0.2691
Perihelion
0.76 AU
Aphelion
1.319864 AU
Inclination
10.95°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
62.36°

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-Jul-03 20:27 0.058332 AU
8726381 km
13.14 km/s
2040-Dec-06 11:23 0.173539 AU
25961109 km
15.99 km/s
2041-Dec-18 03:47 0.149068 AU
22300328 km
6.63 km/s
2042-Oct-10 15:38 0.362442 AU
54220537 km
7.62 km/s
2043-Apr-12 11:42 0.266950 AU
39935222 km
8.52 km/s
2043-Aug-14 22:11 0.325247 AU
48656286 km
6.61 km/s
2044-Jun-25 13:00 0.044220 AU
6615287 km
9.89 km/s
2045-Jul-15 19:19 0.351898 AU
52643257 km
20.01 km/s
2057-Dec-03 06:02 0.274787 AU
41107539 km
18.35 km/s
2058-Dec-18 19:41 0.044335 AU
6632394 km
8.00 km/s
2059-Oct-21 06:37 0.343162 AU
51336331 km
7.51 km/s
2060-Mar-27 14:18 0.284948 AU
42627591 km
8.66 km/s
2060-Aug-26 20:14 0.357357 AU
53459902 km
7.02 km/s
2061-Jun-20 18:29 0.056701 AU
8482364 km
8.46 km/s
2062-Jul-12 22:32 0.297086 AU
44443364 km
18.22 km/s
2074-Nov-30 12:21 0.372291 AU
55693929 km
20.27 km/s
2075-Dec-16 23:03 0.012574 AU
1880982 km
9.53 km/s
2076-Oct-26 18:17 0.340318 AU
50910916 km
7.44 km/s
2077-Mar-18 23:52 0.284256 AU
42524122 km
8.57 km/s
2077-Aug-31 03:26 0.369575 AU
55287684 km
7.17 km/s
2078-Jun-19 06:50 0.071163 AU
10645843 km
8.21 km/s
2079-Jul-12 22:55 0.315186 AU
47151117 km
18.51 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
26.16

Orbit Quality

RMS
0.85108
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.

Keep exploring

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