SpaceAtlas Space Object Data
NASA JPL SBDB · 405762

405762

405762 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.481 AU it takes 1.80 yr to circle the Sun.

Apollo Observations: 71
Orbital Period · P
1.80 yr
v(q)
39.7 km/s
v(Q)
15.1 km/s
Diameter · ≈
0.31 km
TJ
4.46
Eccentricity · e
0.448

Orbit and dynamics

Between its closest point (0.817 AU) and its farthest (2.144 AU), the heliocentric distance changes by 1.327 AU over every revolution.

One full revolution takes 1.80 yr (658 days), computed from the semi-major axis of 1.481 AU.

The high eccentricity (0.448) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

The orbital plane is tilted 5.77° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 39.7 km/s at perihelion and falls to 15.1 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 = 20.27 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.31 km.

Observation record and orbit quality

Astrometry from 71 individual observations underpins this orbit; the fit leaves an RMS residual of 0.4459 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
1.481 AU
Eccentricity
0.448
Perihelion
0.817 AU
Aphelion
2.144488 AU
Inclination
5.77°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
149.78°

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
2059-Oct-10 18:05 0.192070 AU
28733190 km
16.92 km/s
2068-Oct-10 08:37 0.188202 AU
28154692 km
16.80 km/s
2077-Oct-10 04:21 0.196638 AU
29416606 km
17.07 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
20.27

Orbit Quality

RMS
0.44589
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.

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