SpaceAtlas Space Object Data
NASA JPL SBDB · 2016 GV221

2016 GV221

2016 GV221 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.185 AU it takes 1.29 yr to circle the Sun.

Apollo Observations: 86
Orbital Period · P
1.29 yr
v(q)
37.3 km/s
v(Q)
20.1 km/s
Diameter · ≈
0.04 km
TJ
5.3
Eccentricity · e
0.3005

Orbit and dynamics

The path is an ellipse reaching 0.829 AU from the Sun at perihelion and 1.541 AU at aphelion, a radial span of 0.712 AU.

Applying Kepler's third law to a = 1.185 AU gives an orbital period of 1.29 yr, or about 471 days.

An eccentricity of 0.3 makes the orbit moderately elongated.

Its inclination of 3.68° keeps it close to the plane of the ecliptic.

By the vis-viva equation its orbital speed rises to 37.3 km/s at perihelion and falls to 20.1 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 = 25.02 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.04 km.

Observation record and orbit quality

The current orbit solution is based on 86 observations and has a weighted RMS residual of 0.5052 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
1.185 AU
Eccentricity
0.3005
Perihelion
0.829 AU
Aphelion
1.541092 AU
Inclination
3.68°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
264.21°

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
2030-Oct-19 19:48 0.371149 AU
55523173 km
22.82 km/s
2038-Mar-28 11:46 0.322321 AU
48218577 km
22.71 km/s
2047-Apr-06 08:27 0.089134 AU
13334282 km
17.19 km/s
2078-Mar-27 02:24 0.364608 AU
54544585 km
23.82 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
25.02

Orbit Quality

RMS
0.50518
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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