SpaceAtlas Space Object Data
NASA JPL SBDB · 2020 BS1

2020 BS1

2020 BS1 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.36 AU it takes 1.59 yr to circle the Sun.

Apollo Observations: 122
Orbital Period · P
1.59 yr
v(q)
33.8 km/s
v(Q)
19.3 km/s
Diameter · ≈
0.02 km
TJ
4.8
Eccentricity · e
0.2746

Orbit and dynamics

The path is an ellipse reaching 0.987 AU from the Sun at perihelion and 1.733 AU at aphelion, a radial span of 0.746 AU.

Applying Kepler's third law to a = 1.36 AU gives an orbital period of 1.59 yr, or about 579 days.

An eccentricity of 0.275 makes the orbit moderately elongated.

The orbital plane is tilted 6.9° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 33.8 km/s at perihelion and falls to 19.3 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 = 26.31 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.02 km.

Observation record and orbit quality

The current orbit solution is based on 122 observations and has a weighted RMS residual of 0.4945 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
1.36 AU
Eccentricity
0.2746
Perihelion
0.987 AU
Aphelion
1.733456 AU
Inclination
6.9°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
19.09°

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-Nov-09 23:51 0.343242 AU
51348310 km
15.06 km/s
2028-Apr-06 10:54 0.406095 AU
60750993 km
5.07 km/s
2039-Feb-12 22:37 0.099592 AU
14898807 km
10.41 km/s
2058-Feb-25 23:15 0.292861 AU
43811355 km
16.48 km/s
2077-Feb-26 10:22 0.267600 AU
40032362 km
16.78 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
26.31

Orbit Quality

RMS
0.49454
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.

Keep exploring

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