SpaceAtlas Space Object Data
NASA JPL SBDB · 2012 XK134

2012 XK134

2012 XK134 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.193 AU it takes 1.30 yr to circle the Sun.

Apollo Observations: 41
Orbital Period · P
1.30 yr
v(q)
33.9 km/s
v(Q)
21.9 km/s
Diameter · ≈
0.02 km
TJ
5.3
Eccentricity · e
0.2152

Orbit and dynamics

Between its closest point (0.937 AU) and its farthest (1.45 AU), the heliocentric distance changes by 0.513 AU over every revolution.

One full revolution takes 1.30 yr (476 days), computed from the semi-major axis of 1.193 AU.

An eccentricity of 0.215 makes the orbit moderately elongated.

Its inclination of 0.62° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 33.9 km/s at perihelion and falls to 21.9 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 = 26.4 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.02 km.

Observation record and orbit quality

Astrometry from 41 individual observations underpins this orbit; the fit leaves an RMS residual of 0.3982 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
1.193 AU
Eccentricity
0.2152
Perihelion
0.937 AU
Aphelion
1.449734 AU
Inclination
0.62°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
163.97°

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
2029-Aug-10 06:52 0.016389 AU
2451765 km
7.41 km/s
2030-Jan-30 16:04 0.258484 AU
38668598 km
4.96 km/s
2034-Mar-29 03:41 0.436448 AU
65291740 km
7.73 km/s
2038-May-16 18:57 0.394514 AU
59018395 km
6.81 km/s
2038-Dec-26 19:24 0.377141 AU
56419547 km
16.83 km/s
2042-Sep-01 20:40 0.030068 AU
4498065 km
4.12 km/s
2043-Jan-04 09:20 0.208935 AU
31256247 km
2.68 km/s
2046-Jul-17 23:40 0.466890 AU
69845763 km
19.24 km/s
2047-Mar-13 20:04 0.416805 AU
62353172 km
7.40 km/s
2051-Apr-25 22:12 0.435996 AU
65224022 km
7.60 km/s
2055-Jun-19 07:36 0.273844 AU
40966542 km
4.73 km/s
2055-Dec-10 08:51 0.047207 AU
7062015 km
7.88 km/s
2059-Aug-04 10:51 0.130453 AU
19515456 km
10.08 km/s
2060-Feb-10 23:33 0.314631 AU
47068129 km
5.79 km/s
2064-Mar-29 11:34 0.442154 AU
66145326 km
7.78 km/s
2068-May-10 16:22 0.411658 AU
61583218 km
7.10 km/s
2068-Dec-29 03:26 0.444748 AU
66533304 km
18.89 km/s
2072-Nov-05 07:08 0.047182 AU
7058322 km
3.97 km/s
2076-Jul-23 15:27 0.352642 AU
52754469 km
15.71 km/s
2077-Mar-02 08:31 0.391444 AU
58559237 km
6.97 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
26.4

Orbit Quality

RMS
0.39821
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.

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