SpaceAtlas Space Object Data
NASA JPL SBDB · 459046

459046

459046 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.597 AU it takes 2.02 yr to circle the Sun.

Apollo Observations: 267
Orbital Period · P
2.02 yr
v(q)
40.1 km/s
v(Q)
13.8 km/s
Diameter · ≈
1.18 km
TJ
4.2
Eccentricity · e
0.4868

Orbit and dynamics

Between its closest point (0.82 AU) and its farthest (2.374 AU), the heliocentric distance changes by 1.554 AU over every revolution.

One full revolution takes 2.02 yr (737 days), computed from the semi-major axis of 1.597 AU.

The high eccentricity (0.487) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

The orbital plane is tilted 12.5° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 40.1 km/s at perihelion and falls to 13.8 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 = 17.39 and an assumed geometric albedo of 0.14, the diameter works out to roughly 1.18 km.

Observation record and orbit quality

Astrometry from 267 individual observations underpins this orbit; the fit leaves an RMS residual of 0.515 arcseconds.

Condition code U = 1 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
1.597 AU
Eccentricity
0.4868
Perihelion
0.82 AU
Aphelion
2.37442 AU
Inclination
12.5°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
280.36°

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
2075-Mar-22 11:23 0.199880 AU
29901665 km
16.92 km/s
2077-Apr-01 10:04 0.145718 AU
21799077 km
14.28 km/s
2079-Apr-16 13:51 0.144260 AU
21581036 km
12.81 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
17.39

Orbit Quality

RMS
0.515
Condition
1
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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