2007 VK184

Small near-Earth asteroid February 2018 #FFC2E0 2007 VK 184 2008VK184-year2014.png The 2014 close approach of 2007 VK 184 Catalina Sky Survey (703) 12 November 2007 Apollo NEO 2025-Nov-21 (JD 2461000.5) 0 15.58 years 0.00054 AU km on 0.055 AU km on 0.033 AU km on 1.7258 AU 0.74297 AU 2.7087 AU 0.56950 828.1 d (2.27 yr) 1.2211° 253.52° 73.666° 3.6569° 22.8 km/sspeed ~130 m us 3.3e9 kg (assumed) 22.06 2007 VK 184 is a sub-kilometer asteroid, classified as a near-Earth object of the Apollo group, and estimated to be approximately 130 m us in diameter. It was listed on the Sentry Risk Table with a Torino Scale rating of 1 for a potential impactor in June 2048. It was removed from the Sentry Risk Table on 28 March 2014. 2023 The asteroid came to opposition on 24 April 2023 when it had a solar elongation of 177 degrees and an apparent magnitude of 22. Then on 15 July 2023 the asteroid harmlessly passed 0.2275 AU e6km unit on from Earth. Description 2007 VK 184 was discovered on 12 November 2007 by the Catalina Sky Survey. It was recovered on 26 March 2014 by Mauna Kea, and removed from the Sentry Risk Table on 28 March 2014. By 4 January 2008, with an observation arc of 52 days, there was a 1 in 2700 chance of an impact with Earth on 3 June 2048. The Sentry Risk Table, using an observation arc of 60 days, showed the asteroid had a 1 in 1820 chance (0.055%) of impacting Earth on 3 June 2048. Since the March 2014 recovery, it is known that the asteroid will pass 0.013 AU km mi on on from Earth on 2 June 2048. 2014 passage Before the 2014 close approach, the asteroid had a modest observation arc of 60 days, and the imprecise trajectory of this asteroid was complicated by close approaches to Earth, Venus and Mars. On 23 May 2014, the asteroid passed 0.17 AU km mi on off from Earth and reached an apparent magnitude of ~20.8. As expected the close approach allowed astronomers to recover the asteroid on 26 March 2014 and refine the odds of a future collision. As the asteroid gets closer to Earth, the positional uncertainty becomes larger. By recovering the asteroid well before closest approach you can avoid searching a larger region of the sky. Most asteroids rated 1 on the Torino Scale are later downgraded to 0 after more observations come in. Risk assessments were calculated based on a diameter of 130 meters. It was estimated that, if it were ever to impact Earth, it would enter the atmosphere at a speed of 19.2 km/s and would have a kinetic energy equivalent to 150 megatons of TNT. Assuming the target surface is sedimentary rock, the asteroid would impact the ground with the equivalent of 40 megatons of TNT and create a 2.1 km us impact crater. Asteroids of approximately 130 meters in diameter are expected to impact Earth once every 11000 years or so. 2048 On 26–27 March 2014, additional observations were made which ruled out the chance of an impact in 2048. On 2 June 2048 the asteroid will pass 5 lunar distances from Earth with a 3-sigma uncertainty region of ±20000 km. 2118 By the Earth approach of June 2118 the known approaches become more divergent. +2118 Earth approach Date Minimumpossibleapproach Maximumpossibleapproach2118-Jun-06 ± 2 days 0.00089 AU e3km unit on 0.041 AU e6km unit See also 99942 Apophis, a NEO that, for a few days, was thought to have a slight probability of striking the Earth in 2029. But the likelihood that would happen was quickly determined to be zero. Notes speed v = 42.1219 1/r − 0.5/a, where r is the distance from the Sun, and a is the major semi-axis. Average velocity is at r=a=1.7 AU. References MPEC 2007-V94 : 2007 VK184 IAU Minor Planet Center 2007-11-13 http://www.minorplanetcenter.org/mpec/K07/K07V94.html 2010-10-27 MPEC 2014-F50 : 2007 VK184 IAU Minor Planet Center 2014-03-28 https://www.minorplanetcenter.net/mpec/K14/K14F50.html 2014-04-01 last observation: 2014-03-27; arc: 6.37 years JPL Small-Body Database Browser: (2007 VK184) Jet Propulsion Laboratory https://ssd.jpl.nasa.gov/tools/sbdb_lookup.html#/?sstr=2007VK184&view=OPC https://web.archive.org/web/20161026013608/http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2007VK184;cad=1 2016-10-26 live 2014-04-01 2013-10-17 2007 VK184 Earth Impact Risk Summary Wayback Machine:NASA/JPL Near-Earth Object Program Office http://neo.jpl.nasa.gov/risk/2007vk184.html 2014-04-01 dead https://web.archive.org/web/20131017014439/http://neo.jpl.nasa.gov/risk/2007vk184.html October 17, 2013 Horizons Batch for 24 Apr 2023 Opposition JPL Horizons https://ssd.jpl.nasa.gov/horizons_batch.cgi?batch=1&COMMAND=%272007+VK184%27&START_TIME=%272023-04-01%27&STOP_TIME=%272023-04-30%27&STEP_SIZE=%271%20day%27&QUANTITIES=%279,20,23,29%27 2022-07-29 2008-01-10 WayBack Machine archive from 10 Jan 2008 Wayback Machine http://neo.jpl.nasa.gov/risk/2007vk184.html 2013-02-20 dead https://web.archive.org/web/20080110092256/http://neo.jpl.nasa.gov/risk/2007vk184.html January 10, 2008 2012 VK 184 Ephemerides for 23 May 2014 NEODyS (Near Earth Objects Dynamic Site) https://newton.spacedys.com/neodys/index.php?pc=1.1.3.1&n=2007VK184&oc=500&y0=2014&m0=5&d0=1&h0=0&mi0=0&y1=2014&m1=6&d1=1&h1=0&mi1=0&ti=1.0&tiu=days 2013-02-21 2010 Earth Impact Effects Program Imperial College London / Purdue University Robert Marcus H. Jay Melosh Gareth Collins amp https://impact.ese.ic.ac.uk/ImpactEffects/ 2013-02-20 (solution using 130 meters, 2600 kg/m3, 19.2 km/s, 45 degrees, target: sedimentary rock) 2007 VK184 Orbit IAU Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=2007+VK184 2014-04-01 Date/Time Removed NASA/JPL Near-Earth Object Program Office http://neo.jpl.nasa.gov/risk/removed.html https://web.archive.org/web/20140403151020/http://neo.jpl.nasa.gov/risk/removed.html dead 2014-04-03 2014-04-01 2014-04-02 Asteroid 2007 VK184 Eliminated as Impact Risk to Earth https://www.nasa.gov/jpl/asteroid/2007vk184-20140403/ NASA/JPL Near-Earth Object Program Office 2014-04-03 live https://web.archive.org/web/20151108094215/http://neo.jpl.nasa.gov/news/news183.html 2015-11-08 Horizons Batch for 2048-Jun-02 JPL Horizons https://ssd.jpl.nasa.gov/horizons_batch.cgi?batch=1&COMMAND=%272007+VK184%27&START_TIME=%272048-Jun-02%27&STOP_TIME=%272048-Jun-03%27&STEP_SIZE=%272%20day%27&QUANTITIES=%2720,39%27 https://web.archive.org/web/20220729174108/https://ssd.jpl.nasa.gov/horizons_batch.cgi?batch=1&COMMAND=%272007+VK184%27&START_TIME=%272048-Jun-02%27&STOP_TIME=%272048-Jun-03%27&STEP_SIZE=%272+day%27&QUANTITIES=%2720%2C39%27 2022-07-29 live 2022-07-29 RNG_3sigma = uncertainty range in km. (JPL#25/Soln.date: 2021-Apr-15 generates RNG_3sigma = 18862 km for 2048-Jun-02.) Close approaches for 2007VK184 from 1950 to 2122 European Space Agency https://neo.ssa.esa.int/search-for-asteroids?tab=closeapp&des=2007VK184 https://web.archive.org/web/20220730113213/https://neo.ssa.esa.int/search-for-asteroids?tab=closeapp&des=2007VK184 2022-07-30 live 2022-07-30 External links List Of The Potentially Hazardous Asteroids (PHAs), Minor Planet Center 2007+VK184 2007VK184 3394541 # Category:Minor planet object articles (unnumbered) Category:Discoveries by the Catalina Sky Survey # 20140523 20071112