SpaceAtlas Space Object Data
NASA JPL SBDB · 2020 RO1

2020 RO1

2020 RO1 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.142 AU it takes 1.22 yr to circle the Sun.

Apollo Observations: 82
Orbital Period · P
1.22 yr
v(q)
31.5 km/s
v(Q)
24.7 km/s
Diameter · ≈
0.03 km
TJ
5.48
Eccentricity · e
0.1222

Orbit and dynamics

Between its closest point (1.002 AU) and its farthest (1.282 AU), the heliocentric distance changes by 0.28 AU over every revolution.

One full revolution takes 1.22 yr (446 days), computed from the semi-major axis of 1.142 AU.

An eccentricity of 0.122 makes the orbit moderately elongated.

The orbital plane is tilted 5.2° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 31.5 km/s at perihelion and falls to 24.7 km/s at aphelion.

Size and surface

No direct size measurement is available; from an absolute magnitude of H = 25.3 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.03 km.

Observation record and orbit quality

Astrometry from 82 individual observations underpins this orbit; the fit leaves an RMS residual of 0.5087 arcseconds.

Condition code U = 5 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
1.142 AU
Eccentricity
0.1222
Perihelion
1.002 AU
Aphelion
1.281552 AU
Inclination
5.2°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
195.67°

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
2031-Oct-06 22:19 0.132689 AU
19850015 km
6.28 km/s
2032-Feb-17 16:15 0.152021 AU
22741994 km
3.33 km/s
2037-Jun-22 09:32 0.266669 AU
39893116 km
4.27 km/s
2038-Jan-06 00:03 0.444296 AU
66465740 km
14.70 km/s
2042-Sep-27 11:44 0.326526 AU
48847534 km
11.82 km/s
2043-Mar-27 05:45 0.221967 AU
33205832 km
4.60 km/s
2048-Aug-03 00:59 0.204522 AU
30596006 km
3.14 km/s
2048-Dec-25 01:58 0.245658 AU
36749851 km
8.47 km/s
2054-Apr-25 14:21 0.266453 AU
39860749 km
5.03 km/s
2059-Oct-07 00:40 0.074592 AU
11158846 km
2.72 km/s
2065-May-12 18:32 0.282881 AU
42318325 km
5.05 km/s
2070-Oct-10 05:14 0.045968 AU
6876773 km
3.16 km/s
2076-May-18 09:23 0.286068 AU
42795104 km
4.99 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
25.3

Orbit Quality

RMS
0.50867
Condition
5
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.