SpaceAtlas Space Object Data
NASA JPL SBDB · 2012 MD7

2012 MD7

2012 MD7 is an Aten-type near-Earth asteroid whose orbit lies mostly inside that of Earth, with a semi-major axis of 0.977 AU and a period of 0.97 yr.

Aten Observations: 10
Orbital Period · P
0.97 yr
v(q)
33.6 km/s
v(Q)
27 km/s
Diameter · ≈
0.05 km
TJ
6.19
Eccentricity · e
0.1088

Orbit and dynamics

The path is an ellipse reaching 0.871 AU from the Sun at perihelion and 1.083 AU at aphelion, a radial span of 0.212 AU.

Applying Kepler's third law to a = 0.977 AU gives an orbital period of 0.97 yr, or about 353 days.

An eccentricity of 0.109 makes the orbit moderately elongated.

Its inclination of 3.76° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 33.6 km/s at perihelion and falls to 27 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 = 24.1 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.05 km.

Observation record and orbit quality

The current orbit solution is based on 10 observations and has a weighted RMS residual of 0.5385 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
0.9771 AU
Eccentricity
0.1088
Perihelion
0.871 AU
Aphelion
1.083408 AU
Inclination
3.76°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
42.41°

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

No close approaches to Earth are currently on record for this object.

Physical Parameters

Diameter
— km
Albedo
—
Density
— g/cm³
Rotation Period
— h
Absolute Magnitude
24.1

Orbit Quality

RMS
0.53846
Condition
7
Orbit ID
—
Data source: NASA JPL Small-Body Database . 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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