SpaceAtlas Space Object Data
NASA JPL SBDB · 2022 HT2

2022 HT2

2022 HT2 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.848 AU it takes 2.51 yr to circle the Sun.

Apollo Observations: 87
Orbital Period · P
2.51 yr
v(q)
42.4 km/s
v(Q)
11.3 km/s
Diameter · ≈
0.23 km
TJ
3.79
Eccentricity · e
0.5779

Orbit and dynamics

Between its closest point (0.78 AU) and its farthest (2.916 AU), the heliocentric distance changes by 2.136 AU over every revolution.

One full revolution takes 2.51 yr (918 days), computed from the semi-major axis of 1.848 AU.

The high eccentricity (0.578) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

Its inclination of 1.61° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 42.4 km/s at perihelion and falls to 11.3 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 = 20.97 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.23 km.

Observation record and orbit quality

Astrometry from 87 individual observations underpins this orbit; the fit leaves an RMS residual of 0.2904 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
1.848 AU
Eccentricity
0.5779
Perihelion
0.78 AU
Aphelion
2.915959 AU
Inclination
1.61°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
198.49°

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
2027-Jun-18 07:59 0.128944 AU
19289673 km
11.77 km/s
2032-Jul-16 22:15 0.212898 AU
31849020 km
12.31 km/s
2037-Aug-13 11:20 0.233270 AU
34896622 km
12.99 km/s
2042-Sep-14 02:34 0.189074 AU
28285046 km
11.77 km/s
2047-Oct-12 19:19 0.067529 AU
10102125 km
13.18 km/s
2052-Oct-25 01:38 0.099530 AU
14889478 km
17.88 km/s
2057-Nov-04 12:03 0.277125 AU
41457303 km
23.29 km/s
2062-Nov-14 03:02 0.460625 AU
68908537 km
28.85 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
20.97

Orbit Quality

RMS
0.2904
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.

Keep exploring

Explore asteroids, comets and near-Earth objects with JPL orbital data.