SpaceAtlas Space Object Data
NASA JPL SBDB · 2020 XF4

2020 XF4

2020 XF4 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.055 AU it takes 1.08 yr to circle the Sun.

Apollo Observations: 69
Orbital Period · P
1.08 yr
v(q)
36.4 km/s
v(Q)
23.1 km/s
Diameter · ≈
0.01 km
TJ
5.81
Eccentricity · e
0.2247

Orbit and dynamics

Between its closest point (0.818 AU) and its farthest (1.292 AU), the heliocentric distance changes by 0.474 AU over every revolution.

One full revolution takes 1.08 yr (396 days), computed from the semi-major axis of 1.055 AU.

An eccentricity of 0.225 makes the orbit moderately elongated.

Its inclination of 2.99° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 36.4 km/s at perihelion and falls to 23.1 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 = 27.57 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.01 km.

Observation record and orbit quality

Astrometry from 69 individual observations underpins this orbit; the fit leaves an RMS residual of 0.4229 arcseconds.

Condition code U = 5 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
1.055 AU
Eccentricity
0.2247
Perihelion
0.818 AU
Aphelion
1.292058 AU
Inclination
2.99°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
318.44°

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
2032-Nov-24 05:07 0.459886 AU
68797896 km
20.68 km/s
2033-Dec-21 19:39 0.061268 AU
9165549 km
4.78 km/s
2034-Sep-15 08:11 0.293220 AU
43865076 km
6.56 km/s
2035-Jun-08 16:15 0.068468 AU
10242685 km
4.65 km/s
2036-Jul-05 04:12 0.440228 AU
65857122 km
19.64 km/s
2045-Nov-28 08:17 0.371628 AU
55594819 km
17.88 km/s
2046-Nov-27 16:03 0.159326 AU
23834890 km
3.84 km/s
2047-Jan-27 19:48 0.141040 AU
21099313 km
5.07 km/s
2047-Sep-03 18:27 0.288214 AU
43116183 km
6.42 km/s
2048-Jun-14 11:12 0.011733 AU
1755232 km
7.12 km/s
2057-Nov-27 02:41 0.377100 AU
56413421 km
19.94 km/s
2059-Sep-04 09:03 0.288222 AU
43117373 km
6.50 km/s
2060-Jun-16 06:43 0.002889 AU
432181 km
8.06 km/s
2069-Dec-04 09:30 0.228255 AU
34146477 km
15.44 km/s
2072-Jun-24 16:34 0.118875 AU
17783463 km
12.97 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
27.57

Orbit Quality

RMS
0.42293
Condition
5
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

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