SpaceAtlas Space Object Data
NASA JPL SBDB · 2013 HT150

2013 HT150

2013 HT150 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.568 AU it takes 1.96 yr to circle the Sun.

Apollo Observations: 47
Orbital Period · P
1.96 yr
v(q)
43.5 km/s
v(Q)
13 km/s
Diameter · ≈
0.05 km
TJ
4.24
Eccentricity · e
0.5395

Orbit and dynamics

Between its closest point (0.722 AU) and its farthest (2.414 AU), the heliocentric distance changes by 1.692 AU over every revolution.

One full revolution takes 1.96 yr (717 days), computed from the semi-major axis of 1.568 AU.

The high eccentricity (0.539) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

Its inclination of 2.78° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 43.5 km/s at perihelion and falls to 13 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 = 24.4 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.05 km.

Observation record and orbit quality

Astrometry from 47 individual observations underpins this orbit; the fit leaves an RMS residual of 0.3768 arcseconds.

Condition code U = 3 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
1.568 AU
Eccentricity
0.5395
Perihelion
0.722 AU
Aphelion
2.413936 AU
Inclination
2.78°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
293.69°

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
2060-Apr-14 21:13 0.434861 AU
65054353 km
27.49 km/s
2062-Apr-02 18:01 0.187037 AU
27980390 km
20.10 km/s
2064-Mar-16 19:59 0.065196 AU
9753148 km
12.69 km/s
2066-Jan-29 06:23 0.243298 AU
36396796 km
12.20 km/s
2067-Dec-19 06:00 0.255162 AU
38171747 km
12.80 km/s
2069-Oct-30 08:15 0.109552 AU
16388776 km
11.40 km/s
2071-Oct-10 22:07 0.143698 AU
21496940 km
18.85 km/s
2073-Sep-27 04:25 0.399064 AU
59699146 km
26.45 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
24.4

Orbit Quality

RMS
0.37678
Condition
3
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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