Asteroid
Near-Earth
2010 ES4
(2010 ES4)
Where is it now
- Distance from Sun
- 1.529 AU
- True anomaly
- 98.9°
- As of
- 17 September 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
- 05h 06m 10s
- Declination
- -16° 20′ 38″
- Constellation
- Lepus
- Distance from Earth
- 1 AU
- Elongation from the Sun
- 99.51° — well clear of the Sun
Favours the southern hemisphere; low or below the horizon from far north.
From your location
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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
- 1.534 AU
- Eccentricity
- 0.1702
- Inclination
- 25.13°
- Orbital period
- 693.7 days
- Perihelion
- 1.273 AU
- Aphelion
- 1.795 AU
- Longitude of ascending node
- 102.88°
- Argument of periapsis
- 184.99°
- Epoch · J2000
- 2455257.5
- Orbit class · AMO
- Amor
- Earth MOID · 100.3 LD
- 0.2577 AU
- Tisserand (Jupiter)
- 4.362
Orbit quality
Orbit very uncertain — the object may be effectively lost (uncertainty code 9).
- Observations used
- 11
- Data arc
- 2 days
- First observed
- 1 March 2010
- Last observed
- 3 March 2010
- Residual RMS
- 0.37 ″
- Solution · Otto Matic
- 11 February 2025
Physical properties
- Mean radius
- 0.79 km
Discovery & classification
Amor
Near-Earth Object
Sources
- orbital elements: JPL SBDB