SpaceAtlas Space Object Data
NASA JPL SBDB · 2012 XL16

2012 XL16

2012 XL16 is an Aten-type near-Earth asteroid whose orbit lies mostly inside that of Earth, with a semi-major axis of 0.984 AU and a period of 0.98 yr.

Aten Observations: 31
Orbital Period · P
0.98 yr
v(q)
35.9 km/s
v(Q)
25.1 km/s
Diameter · ≈
0.03 km
TJ
6.14
Eccentricity · e
0.1784

Orbit and dynamics

Between its closest point (0.809 AU) and its farthest (1.16 AU), the heliocentric distance changes by 0.351 AU over every revolution.

One full revolution takes 0.98 yr (357 days), computed from the semi-major axis of 0.984 AU.

An eccentricity of 0.178 makes the orbit moderately elongated.

Its inclination of 3.15° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 35.9 km/s at perihelion and falls to 25.1 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 = 25.5 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.03 km.

Observation record and orbit quality

Astrometry from 31 individual observations underpins this orbit; the fit leaves an RMS residual of 0.3902 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
0.9844 AU
Eccentricity
0.1784
Perihelion
0.809 AU
Aphelion
1.160017 AU
Inclination
3.15°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
31.31°

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
2051-Dec-11 01:13 0.395106 AU
59106952 km
20.60 km/s
2052-Dec-04 09:39 0.249111 AU
37266503 km
16.16 km/s
2053-Nov-28 22:08 0.102852 AU
15386505 km
11.70 km/s
2054-Nov-24 07:21 0.017295 AU
2587279 km
7.33 km/s
2057-Aug-17 00:08 0.206124 AU
30835752 km
6.56 km/s
2058-Feb-08 04:22 0.180189 AU
26955850 km
5.18 km/s
2058-Jul-18 17:43 0.195987 AU
29319187 km
6.39 km/s
2059-Mar-11 23:21 0.154135 AU
23058238 km
4.48 km/s
2059-Jun-15 00:11 0.159477 AU
23857372 km
5.00 km/s
2060-Apr-26 01:05 0.044931 AU
6721601 km
4.48 km/s
2061-Apr-20 12:12 0.048184 AU
7208261 km
8.30 km/s
2062-Apr-15 00:38 0.149707 AU
22395801 km
12.33 km/s
2063-Apr-09 11:50 0.265110 AU
39659822 km
16.43 km/s
2064-Apr-02 23:22 0.381979 AU
57143201 km
20.54 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
25.5

Orbit Quality

RMS
0.39016
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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