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(612358) 2002 JE₉ (also written 2002 JE9) is an Apollo near-Earth asteroid and potentially hazardous object. It has a well determined orbit with an observation arc of 10 years and an Uncertainty Parameter of 1. It was removed from the Sentry Risk Table on 10 May 2002. 2002 JE₉ was discovered on 6 May 2002 by the Lincoln Near-Earth Asteroid Research (LINEAR) project using a 1.0-metre (39 in) Reflecting telescope; at the time of discovery, the asteroid possessed an apparent magnitude of 19.1.

The asteroid has an estimated diameter of about 200 meters (660 ft) based on an absolute magnitude of 21.3. 2002 JE₉ is considered significant due to having previously passed closer to the Earth; on 11 April 1971, it passed Earth at a distance of 0.0015 AU (220,000 km; 140,000 mi). 2002 JE₉ is one of the largest objects known to have passed inside the orbit of the moon. During the close approach in 1971 the asteroid reached about apparent magnitude 10, about the same brightness as Saturn's moon Iapetus.

The asteroid will pass 0.0049 AU (730,000 km; 460,000 mi) from Venus on 25 November 2021.

References

1. ^ "MPEC 2002-J25 : 2002 JE9". IAU Minor Planet Center. 8 May 2002. Retrieved 8 November 2011. (K02J09E)
2. ^ "JPL Small-Body Database Browser: (2002 JE9)" (last observation: 2011-07-21; arc: 10.14 years). Jet Propulsion Laboratory. Retrieved 30 March 2016.
3. ^ "Near Earth Asteroids (NEAs)" (Version 20.1). International Astronomical Union. 13 October 2011. Retrieved 30 October 2011.
4. "Date/Time Removed". NASA/JPL Near-Earth Object Program Office. Archived from the original on 2 June 2002. Retrieved 19 March 2012.
5. ^ "JPL Close-Approach Data: (2002 JE9)" (last observation: 2011-07-21; arc: 10.14 years). Retrieved 8 November 2011.
6. ^ "NEODyS-2 Close Approaches for 2002JE9". Near Earth Objects - Dynamic Site. Retrieved 8 November 2011.
7. "2002JE9 Ephemerides for 11 April 1971". NEODyS (Near Earth Objects - Dynamic Site). Retrieved 8 November 2011.
8. "Classic Satellites of the Solar System". Observatorio ARVAL. Archived from the original on 31 July 2010. Retrieved 25 June 2010.

External links

• (612358) 2002 JE9 at NeoDyS-2, Near Earth Objects—Dynamic Site
  • Ephemerides · Observation prediction · Orbital info · MOID · Proper elements · Observational info · Close approaches · Physical info · Orbit animation
• (612358) 2002 JE9 at ESA–space situational awareness
  • Ephemerides · Observations · Orbit · Physical properties · Summary
• (612358) 2002 JE9 at the JPL Small-Body Database
  • Close approach · Discovery · Ephemeris · Orbit viewer · Orbit parameters · Physical parameters

• Minor planet object articles (numbered)
• Apollo asteroids
• Discoveries by LINEAR
• Potentially hazardous asteroids
• Near-Earth objects removed from the Sentry Risk Table
• Astronomical objects discovered in 2002