Related Research Articles
NEODyS is an Italian service that provides information on Near Earth Objects with a Web-based interface. It is based on a continually and (almost) automatically maintained database of near earth asteroid orbits. This site provides a number of services to the NEO community. The main service is an impact monitoring system (CLOMON2) of all near-Earth asteroids covering a period until the year 2100.
(292220) 2006 SU49, provisional designation 2006 SU49, is a sub-kilometer asteroid, classified as near-Earth object and potentially hazardous asteroid of the Apollo group that had a small chance of impacting Earth in 2029.
(417634) 2006 XG1 provisional designation 2006 XG1, is a sub-kilometer asteroid, classified as near-Earth object and potentially hazardous asteroid of the Apollo group, that had a low but non-zero probability of impacting Earth on 31 October 2041. The asteroid was discovered on 20 September 2006, by astronomers of the Catalina Sky Survey, using a dedicated 0.68-meter telescope at Mount Lemmon Observatory in Arizona, United States.
(276033) 2002 AJ129, provisional designation 2002 AJ129, is a Mercury-crossing asteroid. It has the ninth-smallest perihelion of all numbered asteroids, after asteroids such as 2000 BD19, 2004 UL, and 2008 XM. It makes close approaches to all of the inner planets and asteroid 4 Vesta. The asteroid is estimated to be between 0.5–1.2 kilometers (0.3–0.7 mi) across. In January 2018 there was much media hype about this asteroid being classified as a potentially hazardous asteroid, although there is no known threat of an impact for hundreds if not thousands of years. The media has compared the size of the asteroid to the Burj Khalifa in Dubai.
2003 BR47 is a sub-kilometer asteroid classified as near-Earth object and potentially hazardous asteroid of the Apollo group. It was discovered on 31 January 2003 by the LINEAR program. As of 19 March 2013, its orbit is based on 170 observations spanning a data-arc of 939 days.
2006 JY26 is a near-Earth object and potentially hazardous asteroid that is also horseshoe companion to the Earth like 3753 Cruithne.
2012 FN is an Apollo asteroid and a near-Earth object that has a 1 in 4 billion chance of impacting Earth on 7 March 2113. It is estimated to be 5 meters in diameter, which means that it poses no threat if it impacts Earth. An impact would have the kinetic energy of about 3 kt of TNT, and would probably result in an air burst in the upper atmosphere. It is the least threatening asteroid listed on the Sentry Risk Table. The very short observation arc of only 3 hours results in a very poorly constrained orbit, and it could just as easily be 2 AU from Earth on 7 March 2113.
2007 VE191 is a sub-kilometer asteroid, classified as near-Earth asteroid of the Apollo group that was listed on the Sentry Risk Table.
2014 XL7 (also written 2014 XL7) was the most dangerous potentially hazardous asteroid discovered in 2014 that remained on the Sentry Risk Table at the end of 2014. The Apollo near-Earth asteroid is estimated to be roughly 230 meters in diameter and had a cumulative 1 in 83000 chance of impacting Earth on 4–5 June between the years 2048 and 2084. It was removed from the Sentry Risk Table on 15 January 2015 using JPL solution 9 with an observation arc of 35 days.
2013 TX68 is an Apollo asteroid and near-Earth object discovered on 6 October 2013 by the Catalina Sky Survey, during which it was near a close approach of 5.4 Lunar distances (LD) from the Earth. The asteroid only has a 10-day observation arc which makes long-term predictions of its position less certain. It was observed for three days as it approached Earth in the night sky starting with the sixth of October, 2013. Then it became unobservable by being between the Earth and the Sun, then not recovered due to its small size and dimness. Precovery images by Pan-STARRS from 29 September 2013 were announced on 11 February 2016 that extended the observation arc to 10 days. It was removed from the Sentry Risk Table on 11 February 2016, so there is no risk of impact from this object for the next hundred years or more. The asteroid was last observed on 9 October 2013.
2017 DR109, is a micro-asteroid, classified as near-Earth object of the Apollo group and Aten group, respectively. It is currently trapped in a 1:1 mean motion resonance with the Earth of the horseshoe type. The object was first observed on 27 February 2017, by astronomers of the Catalina Sky Survey conducted at Mount Lemmon Observatory, Arizona, United States.
2018 LF16 is a small near-Earth asteroid of the Amor group, first observed by astronomers with the Pan-STARRS survey at Haleakala Observatory on 14 June 2018. Based on limited observations, early estimates of its size of 213 m (699 ft) would make it extremely destructive if it collided with Earth, but predicted orbits make a collision unlikely.
2006 QV89 (also written 2006 QV89) is an Apollo near-Earth asteroid roughly 30 meters (100 feet) in diameter. It was discovered on 29 August 2006 when the asteroid was about 0.03 AU (4,500,000 km; 2,800,000 mi) from Earth and had a solar elongation of 150 degrees.
2018 VP1 is an Apollo near-Earth asteroid roughly 2 meters (7 feet) in diameter. It has a 0.41% chance (1 in 240) of impacting Earth on 2 November 2020 1:12 UT. It was discovered on 3 November 2018 when the asteroid was about 0.003 AU (450,000 km; 280,000 mi) from Earth and had a solar elongation of 165 degrees. The asteroid has a short 12.9 day observation arc and has not been detected since November 2018. The JPL Horizons 2 November 2020 nominal Earth approach is estimated to be roughly 0.0028 AU (420,000 km; 260,000 mi). The line of variations (LOV, uncertainty region) allows the asteroid to impact Earth or pass as far away as 0.025 AU (3,700,000 km; 2,300,000 mi). Its diameter of 2 – 4 meters makes it approximately 100–1000 times less massive than the 20-meter Chelyabinsk meteor. An Earth-impact by this asteroid, assuming it is a common primitive chondrite, might rattle some windows after an airburst and/or drop pebble-sized meteorites on roof tops after dark flight.
2019 UN13 is a small near-Earth asteroid roughly 1–2 meters in diameter. Even though the asteroid was in the night sky for months, it was fainter than the sky survey limit of apparent magnitude 24 until 29 October 2019 when the asteroid was two million km from Earth. It was discovered on October 31, 2019, passing 6,200 km above Earth's surface.
2015 ME131 (also written 2015 ME131) is a lost asteroid and a Near-Earth object (NEO). It is an Atira asteroid, which is by far the smallest group of near-Earth objects. This makes it an interior-Earth object (IEO), meaning that it has an orbit entirely confined within Earth's orbit. Because it has a short observation arc of 1.8 days, and has not been seen since 2015, it has an orbit that is only roughly calculated. It was first observed on June 23, 2015, when the asteroid was more than 1 AU from Earth and had a solar elongation of 68 degrees.
2016 NL56 (also written 2016 NL56) is a Near-Earth Object (NEO) and a Potentially Hazardous Asteroid (PHA), meaning that it has an orbit that can make close approaches to the Earth and large enough to cause significant regional damage in the event of impact. It is an Apollo asteroid, meaning that it is an Earth-crossing asteroid that has an orbit larger than the orbit of the Earth. It was first observed on July 12, 2016, when the asteroid was more than 1 AU from Earth and had a solar elongation of 163 degrees.
2017 QC36 is a near-Earth object and a potentially hazardous asteroid of the Aten group, It measures approximately 200 meters (660 feet) in diameter and was briefly observed by the Wide-field Infrared Survey Explorer on 18 August 2017 before it became a lost asteroid on the following day. As of 2020 the object has not been recovered.
2017 MZ8 (also written 2017 MZ8) is a near-Earth object and a potentially hazardous asteroid, meaning that it has an orbit that can make close approaches to the Earth and large enough to cause significant regional damage in the event of impact. It is an Apollo asteroid, meaning that it is an Earth-crossing asteroid that has an orbit larger than the orbit of the Earth. It was first observed on 22 June 2017, when the asteroid was about 1 AU from Earth and had a solar elongation of 131 degrees.
2017 SG33 (also written 2017 SG33) is a near-Earth object, meaning that it has an orbit which brings it into proximity with Earth. It is an Amor asteroid, meaning that its orbit does not cross Earth's orbit, but its perihelion is close to, but greater than, the aphelion of Earth. It was first observed on 25 September 2017, when the asteroid was less than 1 AU from Earth and had a solar elongation of 169°.
References
- 1 2 3 4 5 "IAU Minor Planet Center 2017 DB120". International Astronomical Union . Retrieved 6 September 2020.
- 1 2 3 4 5 "ESA space situational awareness 2017DB120". European Space Agency . Retrieved 6 September 2020.
- 1 2 3 "JPL Small-Body Database Browser (2017 DB120)". Jet Propulsion Laboratory . Retrieved 6 September 2020.
- 1 2 3 4 5 "Sentry: Earth Impact Monitoring - Object Details 2017 DB120". Jet Propulsion Laboratory . Retrieved 6 September 2020.
- ↑ "JPL HORIZONS Web-Interface (2017 DB120)". Jet Propulsion Laboratory . Retrieved 6 September 2020.
- ↑ "NEODyS-2 Risk List". SpaceDys . Retrieved 6 September 2020.
- ↑ "CNEOS - Asteroid Size Estimator". Jet Propulsion Laboratory . Retrieved 11 August 2020.
- ↑ "Sentry: Earth Impact Monitoring - Impact Risk Data". Jet Propulsion Laboratory . Retrieved 6 September 2020.
- ↑ "NEODyS-2 - Near Earth Objects - Dynamic Site - 2017DB120 - Close Approaches". SpaceDys . Retrieved 6 September 2020.
