SpaceAtlas Space Object Data
NASA JPL SBDB · 2020 WR1

2020 WR1

2020 WR1 is an Aten-type near-Earth asteroid whose orbit lies mostly inside that of Earth, with a semi-major axis of 0.843 AU and a period of 0.77 yr.

Aten Observations: 48
Orbital Period · P
0.77 yr
v(q)
45.2 km/s
v(Q)
23.3 km/s
Diameter · ≈
0.05 km
TJ
6.93
Eccentricity · e
0.3196

Orbit and dynamics

The path is an ellipse reaching 0.573 AU from the Sun at perihelion and 1.112 AU at aphelion, a radial span of 0.539 AU.

Applying Kepler's third law to a = 0.843 AU gives an orbital period of 0.77 yr, or about 282 days.

An eccentricity of 0.32 makes the orbit moderately elongated.

The orbital plane is tilted 10.79° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 45.2 km/s at perihelion and falls to 23.3 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 = 24.45 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.05 km.

Observation record and orbit quality

The current orbit solution is based on 48 observations and has a weighted RMS residual of 0.4184 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
0.8425 AU
Eccentricity
0.3196
Perihelion
0.573 AU
Aphelion
1.111763 AU
Inclination
10.79°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
215.0°

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-Aug-14 06:19 0.367728 AU
55011345 km
9.23 km/s
2027-Dec-22 10:10 0.171731 AU
25690653 km
8.13 km/s
2030-Oct-30 06:03 0.151700 AU
22694050 km
15.18 km/s
2031-May-10 20:53 0.419175 AU
62707750 km
16.18 km/s
2034-Jul-11 20:28 0.427810 AU
63999503 km
14.44 km/s
2035-Jan-16 12:12 0.187003 AU
27975184 km
12.37 km/s
2037-Nov-01 03:28 0.039061 AU
5843491 km
9.21 km/s
2038-Apr-13 12:22 0.363528 AU
54382960 km
13.33 km/s
2041-Jun-14 17:51 0.448489 AU
67092984 km
16.73 km/s
2042-Jan-09 02:25 0.329444 AU
49284083 km
20.14 km/s
2047-Nov-01 10:58 0.150812 AU
22561157 km
17.30 km/s
2052-Jan-16 12:23 0.173895 AU
26014381 km
10.62 km/s
2054-Oct-30 01:53 0.037166 AU
5559902 km
10.07 km/s
2059-Jan-11 01:03 0.196122 AU
29339416 km
18.72 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
24.45

Orbit Quality

RMS
0.41836
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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