SpaceAtlas Space Object Data
NASA JPL SBDB · 2018 GV5

2018 GV5

2018 GV5 is an Amor-type near-Earth asteroid that approaches Earth from beyond our orbit without crossing it, orbiting the Sun at 2.177 AU once every 3.21 yr.

Amor Observations: 90
Orbital Period · P
3.21 yr
v(q)
34 km/s
v(Q)
12 km/s
Diameter · ≈
0.35 km
TJ
3.44
Eccentricity · e
0.4784

Orbit and dynamics

The path is an ellipse reaching 1.136 AU from the Sun at perihelion and 3.218 AU at aphelion, a radial span of 2.082 AU.

Applying Kepler's third law to a = 2.177 AU gives an orbital period of 3.21 yr, or about 1,173 days.

The high eccentricity (0.478) produces a strongly elongated orbit, so the object spends most of its time far from the Sun.

A steep inclination of 21.88° carries it well above and below the ecliptic plane.

By the vis-viva equation its orbital speed rises to 34 km/s at perihelion and falls to 12 km/s at aphelion.

Its perihelion lies just outside Earth's orbit, which is why it is classed as Earth-approaching rather than Earth-crossing.

Size and surface

No direct size measurement is available; from an absolute magnitude of H = 20.05 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.35 km.

Observation record and orbit quality

The current orbit solution is based on 90 observations and has a weighted RMS residual of 0.5193 arcseconds.

Condition code U = 1 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
2.177 AU
Eccentricity
0.4784
Perihelion
1.136 AU
Aphelion
3.218477 AU
Inclination
21.88°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
238.4°

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
2049-Nov-30 15:30 0.429148 AU
64199572 km
14.34 km/s
2050-Mar-04 14:02 0.442596 AU
66211350 km
9.62 km/s
2065-Nov-25 14:43 0.410017 AU
61337716 km
10.70 km/s
2066-Feb-22 11:25 0.480393 AU
71865743 km
12.80 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
20.05

Orbit Quality

RMS
0.51929
Condition
1
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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