SpaceAtlas Space Object Data
NASA JPL SBDB · 619920

619920

619920 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 2.293 AU it takes 3.47 yr to circle the Sun.

Apollo Observations: 317
Orbital Period · P
3.47 yr
v(q)
42.6 km/s
v(Q)
9.1 km/s
Diameter · ≈
0.4 km
TJ
3.27
Eccentricity · e
0.649

Orbit and dynamics

The path is an ellipse reaching 0.805 AU from the Sun at perihelion and 3.781 AU at aphelion, a radial span of 2.976 AU.

Applying Kepler's third law to a = 2.293 AU gives an orbital period of 3.47 yr, or about 1,268 days.

The high eccentricity (0.649) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

The orbital plane is tilted 7.47° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 42.6 km/s at perihelion and falls to 9.1 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 = 19.74 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.4 km.

Observation record and orbit quality

The current orbit solution is based on 317 observations and has a weighted RMS residual of 0.4229 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
2.293 AU
Eccentricity
0.649
Perihelion
0.805 AU
Aphelion
3.781157 AU
Inclination
7.47°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
284.61°

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-21 06:39 0.145094 AU
21705724 km
17.18 km/s
2033-Dec-31 20:35 0.434230 AU
64959912 km
27.67 km/s
2065-Jun-20 17:45 0.385839 AU
57720627 km
26.61 km/s
2072-Jun-01 02:03 0.115108 AU
17219981 km
18.02 km/s
2079-May-14 04:43 0.087041 AU
13021200 km
13.48 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
19.74

Orbit Quality

RMS
0.4229
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

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