SpaceAtlas Space Object Data
NASA JPL SBDB · 2018 VO3

2018 VO3

2018 VO3 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.114 AU it takes 1.18 yr to circle the Sun.

Apollo Observations: 54
Orbital Period · P
1.18 yr
v(q)
37.4 km/s
v(Q)
21.3 km/s
Diameter · ≈
0.01 km
TJ
5.56
Eccentricity · e
0.2736

Orbit and dynamics

The path is an ellipse reaching 0.809 AU from the Sun at perihelion and 1.419 AU at aphelion, a radial span of 0.61 AU.

Applying Kepler's third law to a = 1.114 AU gives an orbital period of 1.18 yr, or about 429 days.

An eccentricity of 0.274 makes the orbit moderately elongated.

Its inclination of 4.55° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 37.4 km/s at perihelion and falls to 21.3 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 = 27.1 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.01 km.

Observation record and orbit quality

The current orbit solution is based on 54 observations and has a weighted RMS residual of 0.4108 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
1.114 AU
Eccentricity
0.2736
Perihelion
0.809 AU
Aphelion
1.41879 AU
Inclination
4.55°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
104.1°

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-25 14:26 0.339009 AU
50715025 km
18.68 km/s
2032-Aug-17 15:42 0.405429 AU
60651358 km
7.94 km/s
2033-May-02 21:21 0.052037 AU
7784646 km
10.15 km/s
2038-Nov-16 09:41 0.010424 AU
1559448 km
6.95 km/s
2039-Jul-12 04:11 0.386898 AU
57879043 km
7.65 km/s
2040-May-22 14:11 0.484244 AU
72441893 km
22.27 km/s
2045-Sep-08 10:11 0.356445 AU
53323346 km
7.33 km/s
2051-Nov-06 19:21 0.027211 AU
4070650 km
11.46 km/s
2052-Jul-26 00:44 0.405889 AU
60720071 km
8.01 km/s
2053-May-15 11:26 0.240103 AU
35918926 km
17.69 km/s
2064-Oct-27 13:11 0.181684 AU
27179483 km
17.19 km/s
2066-May-06 14:37 0.021972 AU
3286973 km
12.20 km/s
2077-Oct-20 17:30 0.382628 AU
57240288 km
21.70 km/s
2078-Aug-26 09:03 0.388973 AU
58189580 km
7.80 km/s
2079-Apr-28 18:14 0.016622 AU
2486650 km
7.98 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
27.1

Orbit Quality

RMS
0.4108
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

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