SpaceAtlas Space Object Data
NASA JPL SBDB · 2012 KT12

2012 KT12

2012 KT12 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.239 AU it takes 1.38 yr to circle the Sun.

Apollo Observations: 36
Orbital Period · P
1.38 yr
v(q)
32.5 km/s
v(Q)
22 km/s
Diameter · ≈
0.02 km
TJ
5.16
Eccentricity · e
0.1917

Orbit and dynamics

Between its closest point (1.002 AU) and its farthest (1.477 AU), the heliocentric distance changes by 0.475 AU over every revolution.

One full revolution takes 1.38 yr (504 days), computed from the semi-major axis of 1.239 AU.

An eccentricity of 0.192 makes the orbit moderately elongated.

Its inclination of 1.71° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 32.5 km/s at perihelion and falls to 22 km/s at aphelion.

Size and surface

No direct size measurement is available; from an absolute magnitude of H = 26.8 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.02 km.

Observation record and orbit quality

Astrometry from 36 individual observations underpins this orbit; the fit leaves an RMS residual of 0.4984 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
1.239 AU
Eccentricity
0.1917
Perihelion
1.002 AU
Aphelion
1.476516 AU
Inclination
1.71°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
25.02°

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
2026-Nov-08 17:44 0.441080 AU
65984643 km
7.31 km/s
2030-Mar-21 11:41 0.251133 AU
37569001 km
2.89 km/s
2030-Aug-02 16:51 0.132404 AU
19807332 km
7.55 km/s
2033-Dec-23 01:40 0.491936 AU
73592646 km
8.24 km/s
2037-Apr-16 07:11 0.347639 AU
52006101 km
14.03 km/s
2037-Oct-13 00:34 0.358925 AU
53694372 km
5.64 km/s
2041-Feb-07 13:46 0.390014 AU
58345190 km
6.33 km/s
2041-Aug-20 01:57 0.431171 AU
64502216 km
16.35 km/s
2044-Dec-01 13:14 0.486642 AU
72800614 km
8.11 km/s
2048-May-07 16:39 0.048113 AU
7197672 km
5.13 km/s
2052-Jan-19 22:08 0.444224 AU
66454935 km
7.40 km/s
2055-Nov-21 19:10 0.465583 AU
69650210 km
7.78 km/s
2059-May-29 10:29 0.009936 AU
1486439 km
3.49 km/s
2062-Dec-30 14:12 0.490662 AU
73401958 km
8.18 km/s
2066-Apr-13 23:57 0.377858 AU
56526690 km
14.96 km/s
2066-Oct-14 20:02 0.372436 AU
55715677 km
5.88 km/s
2070-Jan-31 11:52 0.415408 AU
62144179 km
6.79 km/s
2073-Nov-19 06:07 0.475063 AU
71068461 km
7.85 km/s
2077-Mar-31 17:08 0.227037 AU
33964221 km
1.85 km/s
2077-Jul-29 10:05 0.098515 AU
14737620 km
6.57 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
26.8

Orbit Quality

RMS
0.4984
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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