SpaceAtlas Space Object Data
NASA JPL SBDB · 2019 LZ1

2019 LZ1

2019 LZ1 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 2.232 AU it takes 3.33 yr to circle the Sun.

Apollo Observations: 38
Orbital Period · P
3.33 yr
v(q)
101.4 km/s
v(Q)
3.9 km/s
Diameter · ≈
0.38 km
TJ
2.82
Eccentricity · e
0.9258

Orbit and dynamics

The path is an ellipse reaching 0.166 AU from the Sun at perihelion and 4.298 AU at aphelion, a radial span of 4.132 AU.

Applying Kepler's third law to a = 2.232 AU gives an orbital period of 3.33 yr, or about 1,218 days.

The high eccentricity (0.926) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

The orbital plane is tilted 9.49° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 101.4 km/s at perihelion and falls to 3.9 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 = 19.84 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.38 km.

Observation record and orbit quality

The current orbit solution is based on 38 observations and has a weighted RMS residual of 0.3889 arcseconds.

Condition code U = 2 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
2.232 AU
Eccentricity
0.9258
Perihelion
0.166 AU
Aphelion
4.298386 AU
Inclination
9.49°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
51.08°

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-May-19 19:40 0.376374 AU
56304776 km
46.86 km/s
2032-Jul-19 08:13 0.258999 AU
38745652 km
41.45 km/s
2039-May-15 09:18 0.259906 AU
38881342 km
43.25 km/s
2042-Jul-09 07:49 0.440083 AU
65835547 km
48.25 km/s
2049-May-09 21:15 0.162108 AU
24251068 km
40.09 km/s
2052-Jul-07 05:33 0.479454 AU
71725327 km
49.56 km/s
2059-May-05 22:20 0.054069 AU
8088629 km
36.86 km/s
2069-May-02 00:53 0.021991 AU
3289743 km
34.92 km/s
2079-May-04 23:31 0.043143 AU
6454041 km
36.33 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
19.84

Orbit Quality

RMS
0.38892
Condition
2
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.

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