SpaceAtlas Space Object Data
NASA JPL SBDB · 798412

798412

798412 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.515 AU it takes 1.86 yr to circle the Sun.

Apollo Observations: 454
Orbital Period · P
1.86 yr
v(q)
39.5 km/s
v(Q)
14.8 km/s
Diameter · ≈
0.35 km
TJ
4.38
Eccentricity · e
0.4534

Orbit and dynamics

Between its closest point (0.828 AU) and its farthest (2.202 AU), the heliocentric distance changes by 1.374 AU over every revolution.

One full revolution takes 1.86 yr (681 days), computed from the semi-major axis of 1.515 AU.

The high eccentricity (0.453) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

The orbital plane is tilted 9.51° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 39.5 km/s at perihelion and falls to 14.8 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 = 20.05 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.35 km.

Observation record and orbit quality

Astrometry from 454 individual observations underpins this orbit; the fit leaves an RMS residual of 0.3565 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
1.515 AU
Eccentricity
0.4534
Perihelion
0.828 AU
Aphelion
2.201901 AU
Inclination
9.51°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
209.93°

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
2027-Jan-31 11:56 0.148874 AU
22271272 km
16.55 km/s
2040-Mar-06 04:59 0.179183 AU
26805366 km
8.79 km/s
2053-Jun-05 11:02 0.174281 AU
26072122 km
8.59 km/s
2066-Jul-05 14:24 0.165253 AU
24721435 km
16.59 km/s
2068-Feb-06 12:07 0.071510 AU
10697794 km
13.76 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
20.05

Orbit Quality

RMS
0.35652
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.