SpaceAtlas Space Object Data
NASA JPL SBDB · 2020 BC7

2020 BC7

2020 BC7 is an Amor-type near-Earth asteroid that approaches Earth from beyond our orbit without crossing it, orbiting the Sun at 1.456 AU once every 1.76 yr.

Amor Observations: 31
Orbital Period · P
1.76 yr
v(q)
30.4 km/s
v(Q)
20.1 km/s
Diameter · ≈
0.09 km
TJ
4.52
Eccentricity · e
0.2047

Orbit and dynamics

The path is an ellipse reaching 1.158 AU from the Sun at perihelion and 1.754 AU at aphelion, a radial span of 0.596 AU.

Applying Kepler's third law to a = 1.456 AU gives an orbital period of 1.76 yr, or about 642 days.

An eccentricity of 0.205 makes the orbit moderately elongated.

A steep inclination of 24.12° carries it well above and below the ecliptic plane.

By the vis-viva equation its orbital speed rises to 30.4 km/s at perihelion and falls to 20.1 km/s at aphelion.

Its perihelion lies just outside Earth's orbit, which is why it is classed as Earth-approaching rather than Earth-crossing.

Size and surface

No direct size measurement is available; from an absolute magnitude of H = 22.9 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.09 km.

Observation record and orbit quality

The current orbit solution is based on 31 observations and has a weighted RMS residual of 0.5373 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
1.456 AU
Eccentricity
0.2047
Perihelion
1.158 AU
Aphelion
1.754043 AU
Inclination
24.12°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
178.32°

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-Jan-28 16:08 0.352926 AU
52796996 km
12.38 km/s
2034-Jan-20 15:14 0.432214 AU
64658265 km
12.37 km/s
2043-Jul-15 16:20 0.465829 AU
69687023 km
12.32 km/s
2050-Jul-08 05:48 0.440896 AU
65957138 km
12.07 km/s
2057-Jun-30 08:33 0.430639 AU
64422746 km
11.87 km/s
2064-Feb-15 09:46 0.287231 AU
42969218 km
15.34 km/s
2071-Feb-12 06:33 0.274715 AU
41096708 km
13.78 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
22.9

Orbit Quality

RMS
0.53726
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

Explore asteroids, comets and near-Earth objects with JPL orbital data.