Where is it now
- Distance from Sun
- 1.164 AU
- True anomaly
- 210.22°
- Distance from Earth
- 2.118 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
- 14h 04m 50s
- Declination
- +00° 12′ 06″
- Constellation
- Virgo
- Distance from Earth
- 2.12 AU
- Elongation from the Sun
- 12.16° — too close to the Sun to observe
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
- 0.88 AU
- Eccentricity
- 0.5052
- Inclination
- 28.58°
- Orbital period
- 301.8 days
- Perihelion
- 0.436 AU
- Aphelion
- 1.325 AU
- Longitude of ascending node
- 161.08°
- Argument of periapsis
- 202.43°
- Epoch · J2000
- 2461200.5
- Orbit class · ATE
- Aten
- Earth MOID · 65.3 LD
- 0.1677 AU
- Tisserand (Jupiter)
- 6.533
Orbit quality
Orbit very well determined (uncertainty code 0).
- Observations used
- 560
- Data arc
- 20.12 years
- First observed
- 6 March 2004
- Last observed
- 20 April 2024
- Residual RMS
- 0.5 ″
- Solution · Otto Matic
- 25 March 2025
Physical properties
- Mean radius
- 0.19 km
Visual & observation
- Geometric albedo
- 0.358
- Absolute magnitude (H)
- 19.02
Discovery & classification
- Discovered by
- LINEAR
- Discovery date
- 15 March 2004
- Discovery site
- Socorro
Also known as 2004 EU9
Close approaches 62 on record
Top-down view of the ecliptic, Earth at the centre, for the 2042-02-16 19:47 UTC close approach of 307918. Catalogue miss distance 65.1 LD · 2.5 × 10⁷ km. The curve is the geocentric path from 2042-02-13 to 2042-02-19, 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 |
|---|---|---|---|---|
| 2042-02-16 19:47:00 | Earth | 0.1673 AU | 65.1 LD | 18.5 km/s |
| 2050-03-05 00:48:00 | Merc | 0.0996 AU | 38.7 LD | 29.3 km/s |
| 2050-03-05 00:48:00 | Mercury | 0.0996 AU | 38.7 LD | 29.3 km/s |
| 2055-12-15 17:01:00 | Mercury | 0.0836 AU | 32.5 LD | 29.2 km/s |
| 2055-12-15 17:01:00 | Merc | 0.0836 AU | 32.5 LD | 29.2 km/s |
| 2061-02-16 15:16:00 | Earth | 0.1671 AU | 65.0 LD | 18.6 km/s |
| 2061-09-26 08:55:00 | Mercury | 0.0727 AU | 28.3 LD | 29.4 km/s |
| 2061-09-26 08:55:00 | Merc | 0.0727 AU | 28.3 LD | 29.4 km/s |
| 2067-07-09 00:07:00 | Merc | 0.0709 AU | 27.6 LD | 29.8 km/s |
| 2067-07-09 00:07:00 | Mercury | 0.0709 AU | 27.6 LD | 29.8 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)
- visual properties: JPL SBDB (lookup)
- orbital elements: JPL SBDB