SpaceAtlas Space Object Data
NASA JPL SBDB · 2020 FA1

2020 FA1

2020 FA1 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.027 AU it takes 1.04 yr to circle the Sun.

Apollo Observations: 83
Orbital Period · P
1.04 yr
v(q)
30.3 km/s
v(Q)
28.5 km/s
Diameter · ≈
0.02 km
TJ
5.95
Eccentricity · e
0.0312

Orbit and dynamics

Between its closest point (0.995 AU) and its farthest (1.059 AU), the heliocentric distance changes by 0.064 AU over every revolution.

One full revolution takes 1.04 yr (380 days), computed from the semi-major axis of 1.027 AU.

With e = 0.031, the orbit is close to circular.

Its inclination of 3.54° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 30.3 km/s at perihelion and falls to 28.5 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 = 26.37 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.02 km.

Observation record and orbit quality

Astrometry from 83 individual observations underpins this orbit; the fit leaves an RMS residual of 0.5258 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
1.027 AU
Eccentricity
0.0312
Perihelion
0.995 AU
Aphelion
1.059042 AU
Inclination
3.54°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
238.38°

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
2044-Apr-22 18:01 0.276022 AU
41292344 km
9.38 km/s
2045-Apr-14 09:17 0.048551 AU
7263177 km
2.58 km/s
2045-Dec-19 11:31 0.091419 AU
13676104 km
1.69 km/s
2046-Sep-22 07:50 0.115237 AU
17239230 km
5.00 km/s
2047-Oct-02 09:20 0.350885 AU
52491599 km
11.79 km/s
2071-Apr-21 00:45 0.319664 AU
47821127 km
10.71 km/s
2072-Apr-21 10:25 0.094385 AU
14119739 km
4.00 km/s
2073-Jan-31 10:57 0.081322 AU
12165587 km
2.21 km/s
2073-Sep-17 08:37 0.045135 AU
6752092 km
3.19 km/s
2074-Sep-30 09:37 0.303667 AU
45427910 km
10.41 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
26.37

Orbit Quality

RMS
0.52583
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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