SpaceAtlas Space Object Data
NASA JPL SBDB · 2020 TF

2020 TF

2020 TF belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.089 AU it takes 1.14 yr to circle the Sun.

Apollo Observations: 140
Orbital Period · P
1.14 yr
v(q)
39 km/s
v(Q)
20.9 km/s
Diameter · ≈
0.16 km
TJ
5.6
Eccentricity · e
0.3028

Orbit and dynamics

The path is an ellipse reaching 0.759 AU from the Sun at perihelion and 1.419 AU at aphelion, a radial span of 0.66 AU.

Applying Kepler's third law to a = 1.089 AU gives an orbital period of 1.14 yr, or about 415 days.

An eccentricity of 0.303 makes the orbit moderately elongated.

The orbital plane is tilted 19.22° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 39 km/s at perihelion and falls to 20.9 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 = 21.69 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.16 km.

Observation record and orbit quality

The current orbit solution is based on 140 observations and has a weighted RMS residual of 0.478 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
1.089 AU
Eccentricity
0.3028
Perihelion
0.759 AU
Aphelion
1.418749 AU
Inclination
19.22°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
267.72°

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-Oct-29 05:59 0.135823 AU
20318874 km
16.18 km/s
2030-Apr-26 00:10 0.150150 AU
22462120 km
10.77 km/s
2036-Oct-15 03:12 0.452309 AU
67664444 km
24.49 km/s
2037-Oct-23 04:44 0.381203 AU
57027213 km
9.83 km/s
2038-Jan-21 22:34 0.364174 AU
54479713 km
8.77 km/s
2038-Jun-01 19:05 0.460516 AU
68892274 km
9.22 km/s
2039-May-22 02:33 0.362029 AU
54158782 km
21.77 km/s
2045-Nov-06 18:16 0.068746 AU
10284286 km
11.95 km/s
2047-May-07 04:24 0.058891 AU
8810022 km
14.28 km/s
2053-Oct-27 00:29 0.196306 AU
29366980 km
17.66 km/s
2055-Apr-22 17:42 0.201969 AU
30214133 km
10.27 km/s
2061-Oct-15 04:45 0.460317 AU
68862390 km
24.71 km/s
2062-Oct-23 15:43 0.379818 AU
56819980 km
9.84 km/s
2063-Jan-22 03:19 0.363922 AU
54441888 km
8.74 km/s
2063-Jun-01 19:52 0.460475 AU
68886116 km
9.21 km/s
2064-May-21 17:31 0.368622 AU
55145118 km
21.95 km/s
2070-Nov-08 15:40 0.114086 AU
17066948 km
11.23 km/s
2072-May-09 00:06 0.108286 AU
16199324 km
15.39 km/s
2078-Oct-30 08:26 0.127270 AU
19039373 km
15.99 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
21.69

Orbit Quality

RMS
0.47803
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.

Keep exploring

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