(454101) 2013 BP73

Sub-kilometer asteroid February 2018 yes (454101) 2013 BP 73 #FFC2E0 Mount Lemmon Srvy. Mount Lemmon Obs. 22 January 2013 (454101) 2013 BP 73 NEOApolloPHA 23 March 2018 (JD 2458200.5) 0 12.72 yr (4,645 days) 2.1631 AU 0.4931 AU 1.3281 AU 0.6287 1.53 yr (559 days) 218.36° 0.6440 ms / day 6.8507° 80.062° 251.84° 0.0021 AU (0.82 LD) 0.31 km (estimate) 4.010 kg (assumed) 20.4 (454101) 2013 BP 73 is a sub-kilometer asteroid, classified as a near-Earth object and potentially hazardous asteroid of the Apollo group, approximately 310 m ft us in diameter. Description From discovery until August 2013 when Sentry updated to planetary ephemeris (DE431), it had the 4th highest impact threat on the Palermo Technical Impact Hazard Scale. It was discovered on 22 January 2013 by the Mount Lemmon Survey at an apparent magnitude of 21 using a 1.5 m in on us reflecting telescope. It has an estimated diameter of 310 m us. Six Precovery images from April 2003 have been located. It was removed from the Sentry Risk Table on 3 January 2014. It has an observation arc of 10 years with an uncertainty parameter of 2. Perturbations by Earth, Venus, and Mercury will increase the orbital uncertainty over time. When the asteroid only had an observation arc of 52 days, virtual clones of the asteroid that fit the uncertainty region in the known trajectory showed a 1 in 588,000 chance that the asteroid could impact Earth on 11 December 2096. With a 2096 Palermo Technical Scale of −3.42, the odds of impact by 2013 BP 73 in 2096 were about 2630 times less than the background hazard level of Earth impacts which is defined as the average risk posed by objects of the same size or larger over the years until the date of the potential impact. Using the nominal orbit, JPL Horizons shows that the asteroid will be 0.9 AU km mi on off from Earth on 11 December 2096. 2013 BP 73 made a close approach to Earth around 17 December 2018 that allowed a refinement to the known trajectory. Numbering and naming This minor planet was numbered by the Minor Planet Center on 25 December 2015 (M.P.C. 97517). As of 2018, it has not been named. References 2015-12-19 last obs. JPL Small-Body Database Browser: 454101 (2013 BP73) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2454101;cad=1 Jet Propulsion Laboratory 27 February 2018 454101 (2013 BP73) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=454101 27 February 2018 MPC/MPO/MPS Archive Minor Planet Center https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html 27 February 2018 MPEC 2013-B98 : 2011 BP73 IAU Minor Planet Center 2013-01-31 https://www.minorplanetcenter.net/mpec/K13/K13B98.html 2013-07-28 (K13B73P) Earth Impact Risk Summary: 2013 BP73 Wayback Machine: NASA/JPL Near-Earth Object Program Office http://neo.jpl.nasa.gov/risk/2013bp73.html 2013-07-28 dead https://web.archive.org/web/20131009045708/http://neo.jpl.nasa.gov/risk/2013bp73.html October 9, 2013 2013-05-29 Sentry Risk Table Wayback Machine: NASA/JPL Near-Earth Object Program Office http://neo.jpl.nasa.gov/risk/ 2013-08-11 dead https://web.archive.org/web/20130529175100/http://neo.jpl.nasa.gov/risk/ May 29, 2013 Math: 103.42 = 2630 31 Aug 2005 The Palermo Technical Impact Hazard Scale NASA/JPL Near-Earth Object Program Office http://neo.jpl.nasa.gov/risk/doc/palermo.html https://web.archive.org/web/20020321092747/http://neo.jpl.nasa.gov/risk/doc/palermo.html dead 21 March 2002 2013-07-28 Horizons output http://ssd.jpl.nasa.gov/horizons.cgi?find_body=1&body_group=sb&sstr=2013BP73 Horizon Online Ephemeris System 2013-07-28 (Geocentric Solution) last observation: 2013-04-12; arc: 10 years JPL Close-Approach Data: (2013 BP73) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2013BP73;cad=1#cad 2014-01-23 Orbit 2013 BP73 IAU Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=2013+BP73 2014-01-23 Date/Time Removed NASA/JPL Near-Earth Object Program Office http://neo.jpl.nasa.gov/risk/removed.html https://web.archive.org/web/20020602101400/http://neo.jpl.nasa.gov/risk/removed.html dead 2002-06-02 2014-01-23 External links List of the Potentially Hazardous Asteroids (PHAs), Minor Planet Center PHA Close Approaches To The Earth, Minor Planet Center List Of Apollo Minor Planets (by designation), Minor Planet Center Asteroid Lightcurve Database (LCDB), query form (info https://web.archive.org/web/20171216050541/http://www.minorplanet.info/lightcurvedatabase.html 16 December 2017 ) 454101 454101 2013BP73 454101 (454101) 2013 BP 73 454101 454101 454101 Category:Near-Earth objects removed from the Sentry Risk Table 20130122