SpaceAtlas Space Object Data
NASA JPL SBDB · 2020 OK5

2020 OK5

2020 OK5 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.081 AU it takes 1.12 yr to circle the Sun.

Apollo Observations: 222
Orbital Period · P
1.12 yr
v(q)
31.2 km/s
v(Q)
26.3 km/s
Diameter · ≈
0.03 km
TJ
5.72
Eccentricity · e
0.0836

Orbit and dynamics

Between its closest point (0.99 AU) and its farthest (1.171 AU), the heliocentric distance changes by 0.181 AU over every revolution.

One full revolution takes 1.12 yr (411 days), computed from the semi-major axis of 1.081 AU.

With e = 0.084, the orbit is close to circular.

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

By the vis-viva equation its orbital speed rises to 31.2 km/s at perihelion and falls to 26.3 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 = 25.4 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.03 km.

Observation record and orbit quality

Astrometry from 222 individual observations underpins this orbit; the fit leaves an RMS residual of 0.4495 arcseconds.

Condition code U = 2 means the orbit is very well determined, leaving only a small uncertainty in the future ephemeris.

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
1.081 AU
Eccentricity
0.0836
Perihelion
0.99 AU
Aphelion
1.171372 AU
Inclination
1.01°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
351.21°

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-Sep-11 11:01 0.072879 AU
10902589 km
3.57 km/s
2030-Feb-03 13:32 0.100825 AU
15083181 km
1.74 km/s
2038-Aug-23 23:04 0.357649 AU
53503510 km
12.03 km/s
2039-Apr-27 22:57 0.159949 AU
23928076 km
3.15 km/s
2039-Dec-23 17:57 0.352630 AU
52752654 km
12.04 km/s
2048-Jul-24 01:19 0.094528 AU
14141213 km
1.41 km/s
2048-Dec-07 03:24 0.061823 AU
9248642 km
3.28 km/s
2057-Dec-01 19:39 0.027460 AU
4107924 km
2.21 km/s
2065-Sep-08 07:33 0.168306 AU
25178160 km
6.72 km/s
2066-Mar-05 13:09 0.144504 AU
21617465 km
2.75 km/s
2073-Aug-23 06:51 0.438407 AU
65584792 km
14.85 km/s
2074-May-08 09:53 0.177545 AU
26560284 km
3.42 km/s
2074-Dec-24 02:58 0.355186 AU
53135023 km
12.60 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
25.4

Orbit Quality

RMS
0.44953
Condition
2
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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