SpaceAtlas Space Object Data
NASA JPL SBDB · 612383

612383

612383 is an Amor-type near-Earth asteroid that approaches Earth from beyond our orbit without crossing it, orbiting the Sun at 1.769 AU once every 2.35 yr.

Amor Observations: 143
Orbital Period · P
2.35 yr
v(q)
33.4 km/s
v(Q)
15 km/s
Diameter · ≈
0.47 km
TJ
3.99
Eccentricity · e
0.3812

Orbit and dynamics

Between its closest point (1.095 AU) and its farthest (2.443 AU), the heliocentric distance changes by 1.348 AU over every revolution.

One full revolution takes 2.35 yr (859 days), computed from the semi-major axis of 1.769 AU.

An eccentricity of 0.381 makes the orbit moderately elongated.

The orbital plane is tilted 14.21° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 33.4 km/s at perihelion and falls to 15 km/s at aphelion.

Its perihelion lies just outside Earth's orbit, which is why it is classed as Earth-approaching rather than Earth-crossing.

Size and surface

No direct size measurement is available; from an absolute magnitude of H = 19.37 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.47 km.

Observation record and orbit quality

Astrometry from 143 individual observations underpins this orbit; the fit leaves an RMS residual of 0.6075 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
1.769 AU
Eccentricity
0.3812
Perihelion
1.095 AU
Aphelion
2.443343 AU
Inclination
14.21°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
47.07°

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
2035-Jul-06 09:57 0.202009 AU
30220142 km
11.21 km/s
2042-Jul-29 22:54 0.196233 AU
29356076 km
9.49 km/s
2075-Jul-08 02:37 0.180004 AU
26928143 km
10.77 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
19.37

Orbit Quality

RMS
0.6075
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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