astro.wikisort.org - Asteroid

2010 RX₃₀ is a micro-asteroid, classified as near-Earth object of the Aten group. On 8 September 2010 at 09:51 UTC, it passed between the Earth and the Moon approaching Earth within 248000kilometres above Japan.[4]

2010 RX₃₀

Discovery[1]
Discovered by	Mt. Lemmon Survey
Discovery site	Summerhaven, Arizona, USA
Discovery date	5 September 2010
Designations
MPC designation	2010 RX30
Alternative designations	MPO 279189
Minor planet category	NEO · Aten[2]
Orbital characteristics[2]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 3[1]
Observation arc	1073[1] d
Aphelion	1.15342 AU (172.549 Gm)
Perihelion	0.50803 AU (76.000 Gm)
Semi-major axis	0.83073 AU (124.275 Gm)
Eccentricity	0.38845
Orbital period (sidereal)	0.76 yr (276.558 d) 0.76 yr
Mean anomaly	338.78°
Mean motion	1° 18m 7.56s /day
Inclination	5.05966°
Longitude of ascending node	166.154°
Argument of perihelion	319.80°
Earth MOID	0.00108035 AU (161,618 km)[2]
Mercury MOID	0.17834 AU (26,679,000 km)[1]
Jupiter MOID	3.91055 AU (585.010 Gm)[2]
Physical characteristics
Dimensions	12 m[3]
Mass	2.5×106 kg[3]
Absolute magnitude (H)	27.1[2]

NASA estimated its size to be 12 metres in diameter with a mass of around 2500 tonnes.[3]

The asteroid was discovered by the Catalina Sky Survey near Tucson, Arizona on 5 September 2010, along with 2010 RF12.[5]

See also

• 2010 RF12, another asteroid that passed Earth the same day
• List of asteroid close approaches to Earth

References

External links

• Grossman, Lisa (8 September 2010). "Close-Shave Asteroid Caught on Camera". WIRED Science.
• 2010 RX30 at NeoDyS-2, Near Earth Objects—Dynamic Site
  • Ephemeris · Obs prediction · Orbital info · MOID · Proper elements · Obs info · Close · Physical info · NEOCC
• 2010 RX30 at ESA–space situational awareness
  • Ephemerides · Observations · Orbit · Physical Properties · Summary
• 2010 RX30 at the JPL Small-Body Database
  • Close approach · Discovery · Ephemeris · Orbit diagram · Orbital elements · Physical parameters

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