SpaceAtlas Space Object Data
NASA JPL SBDB · 2019 AH13

2019 AH13

2019 AH13 is an Amor-type near-Earth asteroid that approaches Earth from beyond our orbit without crossing it, orbiting the Sun at 1.178 AU once every 1.28 yr.

Amor Observations: 47
Orbital Period · P
1.28 yr
v(q)
31.2 km/s
v(Q)
24.1 km/s
Diameter · ≈
0.02 km
TJ
5.36
Eccentricity · e
0.1296

Orbit and dynamics

The path is an ellipse reaching 1.026 AU from the Sun at perihelion and 1.331 AU at aphelion, a radial span of 0.305 AU.

Applying Kepler's third law to a = 1.178 AU gives an orbital period of 1.28 yr, or about 467 days.

An eccentricity of 0.13 makes the orbit moderately elongated.

Its inclination of 3.95° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 31.2 km/s at perihelion and falls to 24.1 km/s at aphelion.

Its perihelion lies just outside Earth's orbit, which is why it is classed as Earth-approaching rather than Earth-crossing.

Size and surface

No direct size measurement is available; from an absolute magnitude of H = 26.16 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.02 km.

Observation record and orbit quality

The current orbit solution is based on 47 observations and has a weighted RMS residual of 0.5913 arcseconds.

Condition code U = 5 indicates a moderately constrained orbit; predictions decades ahead still carry noticeable uncertainty.

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
1.178 AU
Eccentricity
0.1296
Perihelion
1.026 AU
Aphelion
1.330669 AU
Inclination
3.95°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
280.9°

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
2028-May-05 22:53 0.229914 AU
34394598 km
3.28 km/s
2032-Sep-16 23:43 0.255894 AU
38281255 km
4.28 km/s
2037-Jun-19 19:55 0.296934 AU
44420699 km
5.07 km/s
2042-Jan-21 12:39 0.111429 AU
16669544 km
4.18 km/s
2046-Jul-21 06:56 0.316592 AU
47361466 km
5.54 km/s
2051-Jan-27 23:00 0.104311 AU
15604750 km
3.46 km/s
2055-Aug-21 23:06 0.296399 AU
44340659 km
5.20 km/s
2060-May-23 16:22 0.261615 AU
39136994 km
4.10 km/s
2064-Oct-04 13:00 0.226844 AU
33935371 km
3.48 km/s
2069-Jul-02 14:29 0.308450 AU
46143514 km
5.34 km/s
2074-Jan-23 07:45 0.035425 AU
5299507 km
2.46 km/s
2078-Jul-30 20:38 0.311709 AU
46631023 km
5.55 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
26.16

Orbit Quality

RMS
0.59127
Condition
5
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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