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2009 FD imaged by the Very Large Telescope in November 2013. 2009 FD was initially announced as discovered on 16 March 2009 by La Sagra Sky Survey. [14] Because there were previous observations found in images taken by the Spacewatch survey some 3 weeks prior, on 24 February 2009, the Minor Planet Center assigned the discovery credit to Spacewatch under the discovery assignment rules.
2009 JF 1 is a small near-Earth object that should have passed within 0.3 AU (45 million km) of Earth in 2022. [5] On 5 February 2022 the 2009 observations were remeasured greatly reducing the odds of an impact. On 5 January 2024 it had a 1-in-140,000 chance of impacting Earth. [2]
2009 DD 45 is a very small Apollo asteroid that passed near Earth at an altitude of 63,500 km (39,500 mi) on 2 March 2009 at 13:44 UTC.It was discovered by Australian astronomers with the Siding Spring Survey at the Siding Spring Observatory on 27 February 2009, only three days before its closest approach to the Earth.
Because 2009 BD is a very small multi-opposition near-Earth object, the effect of radiation pressure on the orbit caused by light from the Sun was able to be detected. [4] The radiation-related acceleration allowed the Area to Mass Ratio (AMR) to be estimated at (2.97 ± 0.33) × 10 −4 m 2 /kg.
[1] 2009 RR was the only asteroid discovered before 2014 that was predicted to potentially pass inside the orbit of the Moon during 2014. The asteroid has an estimated diameter of 26 meters (85 ft) and is listed on the Sentry Risk Table. [3] It is not large enough to qualify as a potentially hazardous object.
2009 RY 3 (~41 meters in diameter) passed 1.94 Lunar distances (745,000 km) from Earth on 11 September 2009. 2009 SH 1 (~5 meters in diameter) may have passed as close as 1.01 Lunar distances (390,000 km) from Earth on 14 September 2009, but the nominal orbit suggests an approach nearer to 2.40 LD (922,000 km).
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2009 SE was first observed on 16 September 2009 by the Catalina Sky Survey (CSS). [3] Its orbit is characterized by low eccentricity (0.065), moderate inclination (20.6°) and a semi-major axis of 1.52 AU. [3] Upon discovery, it was classified as Mars-crosser by the Minor Planet Center. Its orbit is well determined as it is currently (January ...