Where is it now
- Distance from Sun
- 1.04 AU
- True anomaly
- 146.6°
- Distance from Earth
- 1.897 AU
- As of
- 20 October 2026
Two-body Kepler propagation — accurate to ~0.1% for major planets over decades, less so for highly-perturbed bodies. Use JPL Horizons for high precision.
In the sky
- Right ascension
- 12h 17m 58s
- Declination
- -05° 37′ 39″
- Constellation
- Virgo
- Distance from Earth
- 1.9 AU
- Elongation from the Sun
- 21.78° — near the Sun — look low at dusk or dawn
Visible from both hemispheres.
From your location
See how high it is right now, whether it is up after civil twilight, and when it rises and sets where you are.
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Two-body approximation, good to about a degree for the planets — enough to find the constellation and know whether it is up.
Orbital elements
- Semi-major axis
- 0.893 AU
- Eccentricity
- 0.2186
- Inclination
- 12.03°
- Orbital period
- 308.1 days
- Perihelion
- 0.698 AU
- Aphelion
- 1.088 AU
- Longitude of ascending node
- 196.18°
- Argument of periapsis
- 181.9°
- Epoch · J2000
- 2461200.5
- Orbit class · ATE
- Aten
- Earth MOID · 34.0 LD
- 0.0873 AU
- Tisserand (Jupiter)
- 6.619
Orbit quality
Orbit very well determined (uncertainty code 0).
- Observations used
- 933
- Data arc
- 22.18 years
- First observed
- 4 April 2003
- Last observed
- 8 June 2025
- Residual RMS
- 0.34 ″
- Solution · Otto Matic
- 8 July 2025
Physical properties
- Mean radius
- 0.17 km
- Rotation period
- 2.47 hours
Visual & observation
- Geometric albedo
- 0.411
- Absolute magnitude (H)
- 18.93
Discovery & classification
- Discovered by
- LONEOS
- Discovery date
- 4 April 2003
- Discovery site
- Anderson Mesa
Also known as 2003 GS
Close approaches 64 on record
Top-down view of the ecliptic, Earth at the centre, for the 2030-03-18 08:23 UTC close approach of 387733. Catalogue miss distance 42.2 LD · 1.62 × 10⁷ km. The curve is the geocentric path from 2030-03-15 to 2030-03-21, with a mark at UTC midnights and an arrow for the direction of motion. The circle is the Moon’s mean orbit; the Moon is plotted at closest approach. A ray shows the Sun’s direction. The labelled distance is the full separation. The drawn radius is the part that lies in the ecliptic plane. At closest approach the object is south of the ecliptic. The path is a geocentric ecliptic ephemeris from JPL Horizons. The inset is a heliocentric view and is approximate.
| When (UTC) | Body | Distance | Lunar distances | Relative speed |
|---|---|---|---|---|
| 2029-11-19 16:22:00 | Venus | 0.0247 AU | 9.6 LD | 10.1 km/s |
| 2030-03-18 08:23:00 | Earth | 0.1084 AU | 42.2 LD | 7.6 km/s |
| 2036-08-09 05:03:00 | Venus | 0.1198 AU | 46.6 LD | 11.1 km/s |
| 2041-04-17 15:24:00 | Earth | 0.0923 AU | 35.9 LD | 7.4 km/s |
| 2046-03-02 19:52:00 | Earth | 0.1841 AU | 71.7 LD | 9.8 km/s |
| 2052-05-08 21:02:00 | Earth | 0.1953 AU | 76.0 LD | 10.4 km/s |
| 2052-09-02 07:36:00 | Venus | 0.0731 AU | 28.5 LD | 11.2 km/s |
| 2057-03-25 08:55:00 | Earth | 0.0959 AU | 37.3 LD | 7.4 km/s |
| 2059-05-26 17:52:00 | Venus | 0.0482 AU | 18.8 LD | 10 km/s |
| 2068-04-25 15:37:00 | Earth | 0.1075 AU | 41.8 LD | 7.7 km/s |
Next ten from today. 1 lunar distance = 384,400 km. Source: JPL close-approach data.
Sources
- visual properties: JPL SBDB (lookup)
- physical properties: JPL SBDB (lookup)
- physical properties: JPL SBDB (lookup)
- visual properties: JPL SBDB (lookup)
- orbital elements: JPL SBDB