SpaceAtlas Space Object Data
NASA JPL SBDB · 2020 GS1

2020 GS1

2020 GS1 belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.187 AU it takes 1.29 yr to circle the Sun.

Apollo Observations: 37
Orbital Period · P
1.29 yr
v(q)
35.6 km/s
v(Q)
21 km/s
Diameter · ≈
0.13 km
TJ
5.27
Eccentricity · e
0.2588

Orbit and dynamics

Between its closest point (0.88 AU) and its farthest (1.494 AU), the heliocentric distance changes by 0.614 AU over every revolution.

One full revolution takes 1.29 yr (472 days), computed from the semi-major axis of 1.187 AU.

An eccentricity of 0.259 makes the orbit moderately elongated.

The orbital plane is tilted 16.85° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 35.6 km/s at perihelion and falls to 21 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 = 22.2 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.13 km.

Observation record and orbit quality

Astrometry from 37 individual observations underpins this orbit; the fit leaves an RMS residual of 0.4151 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
1.187 AU
Eccentricity
0.2588
Perihelion
0.88 AU
Aphelion
1.494196 AU
Inclination
16.85°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
175.96°

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-Mar-25 17:10 0.438670 AU
65624084 km
10.70 km/s
2029-Oct-22 00:45 0.162211 AU
24266408 km
14.53 km/s
2033-May-09 15:10 0.253753 AU
37960929 km
12.40 km/s
2042-Apr-21 12:43 0.289055 AU
43242026 km
9.75 km/s
2042-Sep-10 02:37 0.195797 AU
29290803 km
10.18 km/s
2051-Mar-28 01:28 0.427407 AU
63939179 km
10.65 km/s
2051-Oct-20 20:59 0.132648 AU
19843822 km
13.96 km/s
2055-May-10 08:52 0.261180 AU
39071900 km
12.88 km/s
2060-Nov-10 09:20 0.483991 AU
72404062 km
23.26 km/s
2064-Apr-22 08:20 0.281793 AU
42155695 km
9.72 km/s
2064-Sep-06 12:54 0.209019 AU
31268748 km
10.20 km/s
2073-Mar-28 06:53 0.423767 AU
63394689 km
10.64 km/s
2073-Oct-19 20:38 0.124198 AU
18579798 km
13.78 km/s
2077-May-10 01:59 0.263987 AU
39491930 km
12.99 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
22.2

Orbit Quality

RMS
0.41514
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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