SpaceAtlas Space Object Data
NASA JPL SBDB · 2021 GP7

2021 GP7

2021 GP7 is an Amor-type near-Earth asteroid that approaches Earth from beyond our orbit without crossing it, orbiting the Sun at 1.48 AU once every 1.80 yr.

Amor Observations: 71
Orbital Period · P
1.80 yr
v(q)
32.1 km/s
v(Q)
18.7 km/s
Diameter · ≈
0.09 km
TJ
4.53
Eccentricity · e
0.2653

Orbit and dynamics

Between its closest point (1.087 AU) and its farthest (1.873 AU), the heliocentric distance changes by 0.786 AU over every revolution.

One full revolution takes 1.80 yr (658 days), computed from the semi-major axis of 1.48 AU.

An eccentricity of 0.265 makes the orbit moderately elongated.

The orbital plane is tilted 10.63° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 32.1 km/s at perihelion and falls to 18.7 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 = 23.04 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.09 km.

Observation record and orbit quality

Astrometry from 71 individual observations underpins this orbit; the fit leaves an RMS residual of 0.5809 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
1.48 AU
Eccentricity
0.2653
Perihelion
1.087 AU
Aphelion
1.872644 AU
Inclination
10.63°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
302.37°

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-May-15 02:53 0.106864 AU
15986669 km
7.00 km/s
2039-May-16 15:25 0.121718 AU
18208736 km
7.47 km/s
2048-May-18 14:33 0.167381 AU
25039789 km
8.68 km/s
2057-May-22 14:50 0.243435 AU
36417401 km
10.56 km/s
2066-Feb-23 06:32 0.395364 AU
59145629 km
2.43 km/s
2066-May-27 17:54 0.344100 AU
51476662 km
13.15 km/s
2075-Feb-04 20:49 0.457802 AU
68486137 km
4.99 km/s
2075-Jun-02 15:28 0.455550 AU
68149327 km
16.08 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
23.04

Orbit Quality

RMS
0.58088
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.

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