SpaceAtlas Space Object Data
NASA JPL SBDB · 2012 BS23

2012 BS23

2012 BS23 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.937 AU it takes 2.70 yr to circle the Sun.

Apollo Observations: 83
Orbital Period · P
2.70 yr
v(q)
41.4 km/s
v(Q)
11.1 km/s
Diameter · ≈
0.18 km
TJ
3.68
Eccentricity · e
0.5775

Orbit and dynamics

Between its closest point (0.818 AU) and its farthest (3.056 AU), the heliocentric distance changes by 2.238 AU over every revolution.

One full revolution takes 2.70 yr (985 days), computed from the semi-major axis of 1.937 AU.

The high eccentricity (0.578) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

The orbital plane is tilted 5.39° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 41.4 km/s at perihelion and falls to 11.1 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 = 21.5 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.18 km.

Observation record and orbit quality

Astrometry from 83 individual observations underpins this orbit; the fit leaves an RMS residual of 0.5462 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
1.937 AU
Eccentricity
0.5775
Perihelion
0.818 AU
Aphelion
3.055618 AU
Inclination
5.39°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
89.93°

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
2028-Jul-31 00:28 0.492171 AU
73627721 km
28.46 km/s
2039-Feb-15 21:21 0.152880 AU
22870536 km
18.81 km/s
2047-Apr-25 18:53 0.209923 AU
31404022 km
11.91 km/s
2055-Jul-11 18:30 0.124900 AU
18684774 km
17.54 km/s
2074-Feb-25 08:34 0.036720 AU
5493266 km
14.70 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
0.54619
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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