SpaceAtlas Space Object Data
NASA JPL SBDB · 162825

162825

162825 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.773 AU it takes 2.36 yr to circle the Sun.

Apollo Observations: 454
Orbital Period · P
2.36 yr
v(q)
58.4 km/s
v(Q)
8.6 km/s
Diameter · ≈
0.9 km
TJ
3.71
Eccentricity · e
0.7441

Orbit and dynamics

Between its closest point (0.454 AU) and its farthest (3.092 AU), the heliocentric distance changes by 2.638 AU over every revolution.

One full revolution takes 2.36 yr (862 days), computed from the semi-major axis of 1.773 AU.

The high eccentricity (0.744) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

The orbital plane is tilted 9.07° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 58.4 km/s at perihelion and falls to 8.6 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 = 17.97 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.9 km.

Observation record and orbit quality

Astrometry from 454 individual observations underpins this orbit; the fit leaves an RMS residual of 0.5101 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
1.773 AU
Eccentricity
0.7441
Perihelion
0.454 AU
Aphelion
3.092289 AU
Inclination
9.07°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
229.29°

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
2027-Mar-26 21:49 0.446601 AU
66810510 km
19.52 km/s
2046-Jan-22 13:37 0.259652 AU
38843354 km
32.56 km/s
2048-Aug-31 21:43 0.146736 AU
21951442 km
20.80 km/s
2053-Feb-14 16:00 0.219797 AU
32881189 km
18.83 km/s
2055-Sep-22 19:34 0.291258 AU
43571549 km
33.71 km/s
2079-Jan-20 05:37 0.306745 AU
45888415 km
34.22 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
17.97

Orbit Quality

RMS
0.51013
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

Explore asteroids, comets and near-Earth objects with JPL orbital data.