SpaceAtlas Space Object Data
NASA JPL SBDB · 2023 GA

2023 GA

2023 GA belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.079 AU it takes 1.12 yr to circle the Sun.

Apollo Observations: 45
Orbital Period · P
1.12 yr
v(q)
33.5 km/s
v(Q)
24.5 km/s
Diameter · ≈
0.12 km
TJ
5.7
Eccentricity · e
0.1554

Orbit and dynamics

Between its closest point (0.911 AU) and its farthest (1.247 AU), the heliocentric distance changes by 0.336 AU over every revolution.

One full revolution takes 1.12 yr (409 days), computed from the semi-major axis of 1.079 AU.

An eccentricity of 0.155 makes the orbit moderately elongated.

The orbital plane is tilted 13.88° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 33.5 km/s at perihelion and falls to 24.5 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 = 22.39 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.12 km.

Observation record and orbit quality

Astrometry from 45 individual observations underpins this orbit; the fit leaves an RMS residual of 0.3252 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
1.079 AU
Eccentricity
0.1554
Perihelion
0.911 AU
Aphelion
1.246677 AU
Inclination
13.88°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
43.52°

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-Sep-08 22:16 0.125819 AU
18822266 km
10.08 km/s
2032-Apr-29 08:20 0.339051 AU
50721243 km
5.36 km/s
2033-Mar-08 00:34 0.358910 AU
53692181 km
16.46 km/s
2040-Sep-01 05:29 0.373138 AU
55820675 km
16.45 km/s
2041-Jul-26 15:35 0.297678 AU
44532024 km
6.73 km/s
2042-Feb-26 06:02 0.091228 AU
13647529 km
9.92 km/s
2050-Sep-01 19:51 0.136514 AU
20422173 km
7.17 km/s
2051-Feb-24 04:50 0.133023 AU
19899886 km
7.23 km/s
2059-Sep-09 06:03 0.107644 AU
16103297 km
9.63 km/s
2060-Apr-19 21:44 0.329636 AU
49312894 km
5.78 km/s
2061-Mar-09 03:26 0.381959 AU
57140287 km
17.05 km/s
2068-Sep-02 08:22 0.351375 AU
52564994 km
15.72 km/s
2069-Jul-20 06:37 0.314060 AU
46982674 km
6.52 km/s
2070-Feb-27 06:27 0.123806 AU
18521181 km
10.49 km/s
2078-Aug-30 18:27 0.155402 AU
23247740 km
7.15 km/s
2079-Feb-23 16:11 0.115633 AU
17298467 km
7.27 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
22.39

Orbit Quality

RMS
0.32522
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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