SpaceAtlas Space Object Data
NASA JPL SBDB · 2019 CL1

2019 CL1

2019 CL1 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.638 AU it takes 2.10 yr to circle the Sun.

Apollo Observations: 68
Orbital Period · P
2.10 yr
v(q)
39.2 km/s
v(Q)
13.8 km/s
Diameter · ≈
0.08 km
TJ
4.15
Eccentricity · e
0.4781

Orbit and dynamics

The path is an ellipse reaching 0.855 AU from the Sun at perihelion and 2.421 AU at aphelion, a radial span of 1.566 AU.

Applying Kepler's third law to a = 1.638 AU gives an orbital period of 2.10 yr, or about 766 days.

The high eccentricity (0.478) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

The orbital plane is tilted 8.61° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 39.2 km/s at perihelion and falls to 13.8 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 = 23.27 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.08 km.

Observation record and orbit quality

The current orbit solution is based on 68 observations and has a weighted RMS residual of 0.3965 arcseconds.

Condition code U = 1 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
1.638 AU
Eccentricity
0.4781
Perihelion
0.855 AU
Aphelion
2.421128 AU
Inclination
8.61°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
146.71°

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
2040-Feb-19 12:01 0.257074 AU
38457713 km
19.59 km/s
2042-May-24 03:34 0.200968 AU
30064381 km
9.39 km/s
2044-Jul-30 22:38 0.369781 AU
55318414 km
22.64 km/s
2063-Mar-16 05:14 0.117623 AU
17596217 km
9.86 km/s
2065-Jul-17 11:31 0.128630 AU
19242715 km
15.23 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
23.27

Orbit Quality

RMS
0.3965
Condition
1
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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