SpaceAtlas Space Object Data
NASA JPL SBDB · 2020 BK3

2020 BK3

2020 BK3 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.158 AU it takes 1.25 yr to circle the Sun.

Apollo Observations: 103
Orbital Period · P
1.25 yr
v(q)
38.4 km/s
v(Q)
19.9 km/s
Diameter · ≈
0.01 km
TJ
5.38
Eccentricity · e
0.3167

Orbit and dynamics

Between its closest point (0.791 AU) and its farthest (1.525 AU), the heliocentric distance changes by 0.734 AU over every revolution.

One full revolution takes 1.25 yr (455 days), computed from the semi-major axis of 1.158 AU.

An eccentricity of 0.317 makes the orbit moderately elongated.

The orbital plane is tilted 9.82° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 38.4 km/s at perihelion and falls to 19.9 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 = 26.9 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.01 km.

Observation record and orbit quality

Astrometry from 103 individual observations underpins this orbit; the fit leaves an RMS residual of 0.3177 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
1.158 AU
Eccentricity
0.3167
Perihelion
0.791 AU
Aphelion
1.524739 AU
Inclination
9.82°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
89.4°

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
2029-Jun-15 08:01 0.439767 AU
65788160 km
8.35 km/s
2029-Dec-18 10:09 0.185235 AU
27710785 km
7.23 km/s
2034-Jun-29 03:02 0.375420 AU
56162058 km
7.57 km/s
2034-Nov-12 09:08 0.243963 AU
36496404 km
8.41 km/s
2035-Feb-13 12:03 0.322398 AU
48230097 km
6.48 km/s
2039-Jul-15 22:48 0.296025 AU
44284702 km
6.63 km/s
2039-Oct-15 03:33 0.246695 AU
36905113 km
8.11 km/s
2040-Mar-02 13:57 0.396939 AU
59381252 km
7.57 km/s
2044-Sep-06 13:13 0.196332 AU
29370897 km
6.31 km/s
2045-Mar-14 18:12 0.448276 AU
67061205 km
8.28 km/s
2049-Aug-08 18:54 0.092874 AU
13893739 km
7.86 km/s
2050-Mar-24 16:51 0.486555 AU
72787631 km
8.78 km/s
2054-Aug-04 12:02 0.039827 AU
5958060 km
10.25 km/s
2059-Jul-30 22:22 0.087736 AU
13125179 km
13.09 km/s
2064-Jul-24 18:15 0.191849 AU
28700130 km
16.38 km/s
2069-Jul-19 13:07 0.303297 AU
45372548 km
19.83 km/s
2071-Feb-10 20:49 0.374855 AU
56077503 km
22.46 km/s
2074-Jul-14 08:11 0.414511 AU
62009979 km
23.26 km/s
2076-Feb-05 08:17 0.244283 AU
36544185 km
18.86 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
26.9

Orbit Quality

RMS
0.3177
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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