SpaceAtlas Space Object Data
NASA JPL SBDB · 2012 BG86

2012 BG86

2012 BG86 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.259 AU it takes 1.41 yr to circle the Sun.

Apollo Observations: 45
Orbital Period · P
1.41 yr
v(q)
70.3 km/s
v(Q)
10 km/s
Diameter · ≈
0.18 km
TJ
4.66
Eccentricity · e
0.7509

Orbit and dynamics

The path is an ellipse reaching 0.314 AU from the Sun at perihelion and 2.204 AU at aphelion, a radial span of 1.89 AU.

Applying Kepler's third law to a = 1.259 AU gives an orbital period of 1.41 yr, or about 516 days.

The high eccentricity (0.751) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

A steep inclination of 35.77° carries it well above and below the ecliptic plane.

By the vis-viva equation its orbital speed rises to 70.3 km/s at perihelion and falls to 10 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 = 21.5 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.18 km.

Observation record and orbit quality

The current orbit solution is based on 45 observations and has a weighted RMS residual of 0.2833 arcseconds.

Condition code U = 2 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
1.259 AU
Eccentricity
0.7509
Perihelion
0.314 AU
Aphelion
2.204383 AU
Inclination
35.77°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
97.3°

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-Jan-18 08:09 0.300683 AU
44981557 km
23.78 km/s
2036-Jan-28 12:18 0.230239 AU
34443195 km
32.77 km/s
2046-Jan-19 17:15 0.490821 AU
73425844 km
21.24 km/s
2053-Jan-20 16:43 0.208391 AU
31174812 km
26.62 km/s
2060-Feb-03 01:52 0.330137 AU
49387722 km
36.91 km/s
2070-Jan-18 11:43 0.376312 AU
56295419 km
22.39 km/s
2077-Jan-24 16:09 0.186126 AU
27844116 km
30.11 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
21.5

Orbit Quality

RMS
0.28329
Condition
2
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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