SpaceAtlas Space Object Data
NASA JPL SBDB · 2008 GS3

2008 GS3

2008 GS3 is an Aten-type near-Earth asteroid whose orbit lies mostly inside that of Earth, with a semi-major axis of 0.855 AU and a period of 0.79 yr.

Aten Observations: 92
Orbital Period · P
0.79 yr
v(q)
47.8 km/s
v(Q)
21.7 km/s
Diameter · ≈
0.12 km
TJ
6.75
Eccentricity · e
0.3747

Orbit and dynamics

Between its closest point (0.534 AU) and its farthest (1.175 AU), the heliocentric distance changes by 0.641 AU over every revolution.

One full revolution takes 0.79 yr (289 days), computed from the semi-major axis of 0.855 AU.

An eccentricity of 0.375 makes the orbit moderately elongated.

A steep inclination of 28.78° carries it well above and below the ecliptic plane.

By the vis-viva equation its orbital speed rises to 47.8 km/s at perihelion and falls to 21.7 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 = 22.27 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.12 km.

Observation record and orbit quality

Astrometry from 92 individual observations underpins this orbit; the fit leaves an RMS residual of 0.4539 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
0.8546 AU
Eccentricity
0.3747
Perihelion
0.534 AU
Aphelion
1.174819 AU
Inclination
28.78°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
167.01°

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
2026-Nov-22 06:57 0.494500 AU
73976187 km
22.97 km/s
2027-Apr-17 22:01 0.227803 AU
34078835 km
15.28 km/s
2030-Mar-25 00:34 0.494124 AU
73919874 km
24.61 km/s
2030-Oct-25 06:25 0.468047 AU
70018873 km
25.65 km/s
2031-Apr-29 15:29 0.359858 AU
53834032 km
17.80 km/s
2034-Mar-23 02:22 0.281058 AU
42045727 km
18.00 km/s
2034-Sep-28 15:37 0.465398 AU
69622501 km
25.53 km/s
2038-Mar-31 21:53 0.168296 AU
25176675 km
15.20 km/s
2038-Aug-31 20:23 0.488925 AU
73142121 km
22.89 km/s
2042-Apr-14 17:40 0.207252 AU
31004528 km
15.11 km/s
2045-Oct-30 20:46 0.472303 AU
70655536 km
25.37 km/s
2046-Apr-27 14:35 0.326856 AU
48896971 km
16.97 km/s
2049-Mar-22 11:18 0.320978 AU
48017595 km
19.13 km/s
2049-Oct-04 04:29 0.463403 AU
69324152 km
25.74 km/s
2053-Mar-29 03:32 0.179135 AU
26798188 km
15.48 km/s
2053-Sep-06 21:10 0.482399 AU
72165935 km
23.71 km/s
2057-Apr-11 10:28 0.189625 AU
28367547 km
14.99 km/s
2060-Nov-05 14:10 0.477635 AU
71453248 km
24.93 km/s
2061-Apr-25 02:28 0.296694 AU
44384836 km
16.30 km/s
2064-Mar-22 07:42 0.364876 AU
54584721 km
20.49 km/s
2064-Oct-09 16:59 0.462920 AU
69251885 km
25.86 km/s
2065-May-01 11:58 0.462019 AU
69117014 km
21.03 km/s
2068-Mar-26 16:19 0.197988 AU
29618548 km
15.91 km/s
2068-Sep-12 18:52 0.476359 AU
71262332 km
24.38 km/s
2072-Apr-08 05:14 0.175930 AU
26318787 km
14.94 km/s
2075-Nov-12 10:54 0.483890 AU
72388937 km
24.34 km/s
2076-Apr-22 05:45 0.268849 AU
40219247 km
15.81 km/s
2079-Mar-23 17:07 0.412097 AU
61648908 km
21.96 km/s
2079-Oct-16 07:10 0.463735 AU
69373836 km
25.87 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
22.27

Orbit Quality

RMS
0.45393
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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