SpaceAtlas Space Object Data
NASA JPL SBDB · 2020 TH6

2020 TH6

2020 TH6 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.006 AU it takes 1.01 yr to circle the Sun.

Apollo Observations: 18
Orbital Period · P
1.01 yr
v(q)
36.9 km/s
v(Q)
23.9 km/s
Diameter · ≈
0.01 km
TJ
6.03
Eccentricity · e
0.2141

Orbit and dynamics

Between its closest point (0.791 AU) and its farthest (1.221 AU), the heliocentric distance changes by 0.43 AU over every revolution.

One full revolution takes 1.01 yr (369 days), computed from the semi-major axis of 1.006 AU.

An eccentricity of 0.214 makes the orbit moderately elongated.

Its inclination of 4.23° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 36.9 km/s at perihelion and falls to 23.9 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 = 28.8 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.01 km.

Observation record and orbit quality

Astrometry from 18 individual observations underpins this orbit; the fit leaves an RMS residual of 0.5047 arcseconds.

Condition code U = 6 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
1.006 AU
Eccentricity
0.2141
Perihelion
0.791 AU
Aphelion
1.221385 AU
Inclination
4.23°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
140.19°

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-Jan-03 08:55 0.194630 AU
29116175 km
6.19 km/s
2027-Aug-15 03:15 0.212683 AU
31816853 km
5.37 km/s
2028-Jan-16 16:21 0.201973 AU
30214718 km
6.58 km/s
2028-Aug-03 16:40 0.219567 AU
32846775 km
5.45 km/s
2029-Jan-28 12:46 0.203133 AU
30388240 km
6.71 km/s
2029-Jul-24 08:14 0.220148 AU
32933611 km
5.42 km/s
2030-Feb-10 07:34 0.198384 AU
29677820 km
6.58 km/s
2030-Jul-13 14:07 0.214709 AU
32120052 km
5.28 km/s
2031-Feb-23 20:34 0.187169 AU
28000141 km
6.20 km/s
2031-Jul-01 22:14 0.202044 AU
30225421 km
5.01 km/s
2032-Mar-09 15:40 0.168539 AU
25213063 km
5.59 km/s
2032-Jun-17 14:02 0.181143 AU
27098572 km
4.57 km/s
2033-Mar-27 06:25 0.140491 AU
21017213 km
4.72 km/s
2033-May-31 00:02 0.149258 AU
22328687 km
3.88 km/s
2034-Apr-20 15:46 0.100526 AU
15038539 km
3.90 km/s
2035-May-02 01:28 0.056194 AU
8406500 km
4.84 km/s
2036-May-04 12:39 0.030873 AU
4618570 km
6.05 km/s
2037-May-07 03:53 0.038618 AU
5777235 km
7.21 km/s
2038-May-10 02:55 0.079954 AU
11960907 km
8.72 km/s
2039-May-13 05:57 0.133808 AU
20017323 km
10.36 km/s
2040-May-15 09:54 0.192176 AU
28749127 km
12.14 km/s
2041-May-18 15:20 0.252507 AU
37774525 km
13.93 km/s
2042-May-21 19:53 0.314599 AU
47063326 km
15.80 km/s
2043-May-25 04:06 0.377207 AU
56429434 km
17.66 km/s
2044-May-27 09:14 0.439298 AU
65718069 km
19.54 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
28.8

Orbit Quality

RMS
0.5047
Condition
6
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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