SpaceAtlas Space Object Data
NASA JPL SBDB · 612210

612210

612210 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.487 AU it takes 1.81 yr to circle the Sun.

Apollo Observations: 86
Orbital Period · P
1.81 yr
v(q)
34.2 km/s
v(Q)
17.4 km/s
Diameter · ≈
0.29 km
TJ
4.49
Eccentricity · e
0.3254

Orbit and dynamics

Between its closest point (1.003 AU) and its farthest (1.971 AU), the heliocentric distance changes by 0.968 AU over every revolution.

One full revolution takes 1.81 yr (662 days), computed from the semi-major axis of 1.487 AU.

An eccentricity of 0.325 makes the orbit moderately elongated.

The orbital plane is tilted 12.97° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 34.2 km/s at perihelion and falls to 17.4 km/s at aphelion.

Size and surface

No direct size measurement is available; from an absolute magnitude of H = 20.41 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.29 km.

Observation record and orbit quality

Astrometry from 86 individual observations underpins this orbit; the fit leaves an RMS residual of 0.5152 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
1.487 AU
Eccentricity
0.3254
Perihelion
1.003 AU
Aphelion
1.97087 AU
Inclination
12.97°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
51.49°

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
2029-Sep-05 03:18 0.254358 AU
38051463 km
10.31 km/s
2029-Dec-24 06:14 0.288173 AU
43110003 km
6.73 km/s
2038-Aug-19 10:04 0.330919 AU
49504798 km
6.33 km/s
2038-Dec-19 15:33 0.194502 AU
29097112 km
11.81 km/s
2058-Sep-05 22:02 0.252695 AU
37802567 km
10.16 km/s
2058-Dec-23 22:54 0.283431 AU
42400708 km
6.72 km/s
2067-Aug-18 18:45 0.337177 AU
50440948 km
6.40 km/s
2067-Dec-20 10:05 0.201309 AU
30115404 km
12.07 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
20.41

Orbit Quality

RMS
0.5152
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.