SpaceAtlas Space Object Data
NASA JPL SBDB · 2020 BT3

2020 BT3

2020 BT3 is an Aten-type near-Earth asteroid whose orbit lies mostly inside that of Earth, with a semi-major axis of 0.831 AU and a period of 0.76 yr.

Aten Observations: 28
Orbital Period · P
0.76 yr
v(q)
43.9 km/s
v(Q)
24.3 km/s
Diameter · ≈
0.03 km
TJ
7.01
Eccentricity · e
0.2868

Orbit and dynamics

Between its closest point (0.593 AU) and its farthest (1.069 AU), the heliocentric distance changes by 0.476 AU over every revolution.

One full revolution takes 0.76 yr (277 days), computed from the semi-major axis of 0.831 AU.

An eccentricity of 0.287 makes the orbit moderately elongated.

The orbital plane is tilted 13.98° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 43.9 km/s at perihelion and falls to 24.3 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 = 25.56 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.03 km.

Observation record and orbit quality

Astrometry from 28 individual observations underpins this orbit; the fit leaves an RMS residual of 0.5318 arcseconds.

Condition code U = 8 signals a poorly constrained orbit, so its future path should be treated as provisional.

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
0.8309 AU
Eccentricity
0.2868
Perihelion
0.593 AU
Aphelion
1.069202 AU
Inclination
13.98°
Orbital Period
— yr
Epoch
2458869.5
Mean Anomaly
168.29°

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-Jan-02 00:15 0.314019 AU
46976501 km
20.83 km/s
2036-Feb-22 14:30 0.207778 AU
31083099 km
17.54 km/s
2039-Feb-22 08:55 0.154693 AU
23141790 km
12.05 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
25.56

Orbit Quality

RMS
0.53179
Condition
8
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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