SpaceAtlas Space Object Data
NASA JPL SBDB · 2007 RT12

2007 RT12

2007 RT12 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.017 AU it takes 1.03 yr to circle the Sun.

Apollo Observations: 43
Orbital Period · P
1.03 yr
v(q)
34.7 km/s
v(Q)
25.1 km/s
Diameter · ≈
0.06 km
TJ
5.99
Eccentricity · e
0.1599

Orbit and dynamics

Between its closest point (0.854 AU) and its farthest (1.18 AU), the heliocentric distance changes by 0.326 AU over every revolution.

One full revolution takes 1.03 yr (375 days), computed from the semi-major axis of 1.017 AU.

An eccentricity of 0.16 makes the orbit moderately elongated.

Its inclination of 4.25° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 34.7 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 = 23.9 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.06 km.

Observation record and orbit quality

Astrometry from 43 individual observations underpins this orbit; the fit leaves an RMS residual of 0.7408 arcseconds.

Condition code U = 3 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
1.017 AU
Eccentricity
0.1599
Perihelion
0.854 AU
Aphelion
1.179618 AU
Inclination
4.25°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
227.77°

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
2042-Jan-07 03:16 0.412214 AU
61666332 km
17.51 km/s
2043-Jan-14 21:18 0.254571 AU
38083208 km
12.66 km/s
2044-Jan-23 07:51 0.102233 AU
15293788 km
7.90 km/s
2045-Feb-11 19:10 0.076186 AU
11397272 km
4.05 km/s
2045-Nov-28 06:28 0.179823 AU
26901184 km
4.41 km/s
2046-Apr-05 20:04 0.148499 AU
22215085 km
5.22 km/s
2046-Oct-25 20:56 0.193745 AU
28983875 km
5.03 km/s
2047-May-20 00:03 0.158758 AU
23749862 km
4.91 km/s
2047-Sep-23 12:20 0.162012 AU
24236652 km
4.60 km/s
2048-Aug-10 18:44 0.072547 AU
10852866 km
3.93 km/s
2049-Aug-07 22:10 0.100323 AU
15008035 km
7.80 km/s
2050-Aug-13 16:13 0.248767 AU
37215031 km
12.28 km/s
2051-Aug-20 07:38 0.401600 AU
60078555 km
16.85 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
23.9

Orbit Quality

RMS
0.74076
Condition
3
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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