SpaceAtlas Space Object Data
NASA JPL SBDB · 2013 HL

2013 HL

2013 HL is an Amor-type near-Earth asteroid that approaches Earth from beyond our orbit without crossing it, orbiting the Sun at 1.427 AU once every 1.70 yr.

Amor Observations: 30
Orbital Period · P
1.70 yr
v(q)
28.2 km/s
v(Q)
22.1 km/s
Diameter · ≈
0.16 km
TJ
4.65
Eccentricity · e
0.1219

Orbit and dynamics

Between its closest point (1.253 AU) and its farthest (1.601 AU), the heliocentric distance changes by 0.348 AU over every revolution.

One full revolution takes 1.70 yr (623 days), computed from the semi-major axis of 1.427 AU.

An eccentricity of 0.122 makes the orbit moderately elongated.

The orbital plane is tilted 15.92° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 28.2 km/s at perihelion and falls to 22.1 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 = 21.68 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.16 km.

Observation record and orbit quality

Astrometry from 30 individual observations underpins this orbit; the fit leaves an RMS residual of 0.4946 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
1.427 AU
Eccentricity
0.1219
Perihelion
1.253 AU
Aphelion
1.600951 AU
Inclination
15.92°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
201.78°

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
2030-Apr-16 01:32 0.378736 AU
56658096 km
8.63 km/s
2037-Sep-17 22:31 0.388011 AU
58045631 km
8.30 km/s
2042-May-16 14:13 0.339726 AU
50822289 km
7.56 km/s
2047-Mar-29 17:13 0.464438 AU
69478935 km
8.90 km/s
2049-Oct-15 01:43 0.475978 AU
71205328 km
9.34 km/s
2054-Aug-26 14:44 0.381301 AU
57041800 km
6.72 km/s
2059-Apr-26 21:15 0.343981 AU
51458854 km
8.35 km/s
2066-Sep-28 20:02 0.412275 AU
61675518 km
8.80 km/s
2071-Jun-03 17:44 0.372928 AU
55789242 km
6.18 km/s
2076-Apr-08 10:24 0.412237 AU
61669834 km
8.79 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
21.68

Orbit Quality

RMS
0.49461
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.

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