SpaceAtlas Space Object Data
NASA JPL SBDB · 2020 JB1

2020 JB1

2020 JB1 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.19 AU it takes 1.30 yr to circle the Sun.

Apollo Observations: 50
Orbital Period · P
1.30 yr
v(q)
40.2 km/s
v(Q)
18.5 km/s
Diameter · ≈
0.02 km
TJ
5.26
Eccentricity · e
0.3693

Orbit and dynamics

The path is an ellipse reaching 0.751 AU from the Sun at perihelion and 1.629 AU at aphelion, a radial span of 0.878 AU.

Applying Kepler's third law to a = 1.19 AU gives an orbital period of 1.30 yr, or about 474 days.

An eccentricity of 0.369 makes the orbit moderately elongated.

Its inclination of 1.01° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 40.2 km/s at perihelion and falls to 18.5 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 = 26.4 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 50 observations and has a weighted RMS residual of 0.4365 arcseconds.

Condition code U = 7 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
1.19 AU
Eccentricity
0.3693
Perihelion
0.751 AU
Aphelion
1.629467 AU
Inclination
1.01°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
291.58°

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-Oct-31 20:59 0.354116 AU
52975013 km
22.98 km/s
2040-Oct-27 11:25 0.409450 AU
61252895 km
25.28 km/s
2042-Jun-05 02:47 0.411060 AU
61493669 km
24.73 km/s
2049-Nov-28 17:36 0.042422 AU
6346284 km
7.96 km/s
2055-Jun-02 17:33 0.426686 AU
63831301 km
23.17 km/s
2059-Apr-06 16:21 0.153374 AU
22944418 km
7.44 km/s
2062-Nov-26 00:47 0.006657 AU
995873 km
8.82 km/s
2068-Jun-01 21:19 0.369442 AU
55267675 km
23.18 km/s
2075-Nov-30 01:53 0.037320 AU
5583045 km
7.84 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
26.4

Orbit Quality

RMS
0.43654
Condition
7
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.

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