2002 AT4

Near-Earth asteroid February 2018 yes 2002 AT 4 #FFC2E0 LINEAR Lincoln Lab's ETS 8 January 2002(first observed only) 2002 AT 4 NEOAmorPHA 21 November 2025 (JD 2461000.5) 0 23.05 yr (8,420 d) 2.7001 AU 1.0328 AU 1.8665 AU 0.4467 2.55 yr (931 d) 107.876° 0.3865 ms / day 1.4981° 323.36° 203.17° 0.041 AU (16 LD) 350 m (est. at 0.047) SMASS D 21.38 2002 AT 4 is a near-Earth object and potentially hazardous asteroid of the Amor group, approximately 350 m ft off 2 us in diameter. It has an eccentric orbit that brings it sometimes close to Earth's orbit, and sometimes halfway between Mars and Jupiter. It is a dark D-type asteroidObserved spectral properties of near-Earth objects: results for population distribution, source regions, and space weathering processes Binzel Richard P. August 2004 Icarus 170 2 10.1016/j.icarus.2004.04.004 http://abacus.bates.edu/~tburbine/binzel.2004.pdf https://www.webcitation.org/5glwslK30?url=http://www.mtholyoke.edu/courses/tburbine/tomburbine/binzel.2004.pdf 2009-05-14 dead 2009-04-20 259–294 2004Icar..170..259B etal which means that it may be reddish in color. Due to its relatively low transfer cost of ~5.5 km/s, NEA delta_v for spacecraft rendezvous missions http://echo.jpl.nasa.gov/~lance/delta_v/delta_v.rendezvous.html https://web.archive.org/web/20010603042837/http://echo.jpl.nasa.gov/~lance/delta_v/delta_v.rendezvous.html dead 2001-06-03 2002 AT 4 was under consideration by the European Space Agency as a candidate target for the Don Quijote mission to study the effects of impacting a spacecraft into an asteroid; however, it is no longer under consideration.http://www.esa.int/SPECIALS/NEO/SEMVXVB1S6F_0.html ESA 5 November 2009 17 October 2011 https://web.archive.org/web/20111017205713/http://www.esa.int/SPECIALS/NEO/SEMVXVB1S6F_0.html dead 2002 AT 4 orbits the Sun at a distance of 1.0–2.7 AU once every 2 years and 7 months (932 days; semi-major axis of 1.87 AU). Its orbit has an eccentricity of 0.45 and an inclination of 1° with respect to the ecliptic. T. M. Ribeiro et al. proposed a conceptual sample return mission named CARINA to 2002 AT 4. The goal of CARINA would be to return for the first time a sample from a D-type asteroid for an in-depth characterisation in Earth-based laboratories. Among other things, CARINA aims to: (i) explore the relationship between dark asteroids and comets; (ii) investigate the role of dark asteroids in the origin of life; (iii) improve our understanding of early Solar System evolution.Ribeiro Tânia M. D’Ambrosio Andrea Dominguez Calabuig Guillermo J. Athanasopoulos Dimitrios Bates Helena Riegler Clemens Gassot Oriane Gerig Selina-Barbara Gómez-González Juan L. Huber Nikolaus Seton Ragnar Magalhães Tiago E.C. November 2023 CARINA: A near-Earth D-type asteroid sample return mission https://doi.org/10.1016/j.actaastro.2023.07.035 Acta Astronautica 212 213–225 10.1016/j.actaastro.2023.07.035 0094-5765 10150/674533 free References 30em 2006-11-27 last obs. JPL Small-Body Database Browser: (2002 AT4) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=3102743 Jet Propulsion Laboratory 8 November 2018 2002 AT4 Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=2002+AT4 8 November 2018 External links MPEC 2002-A53, Minor Planet Electronic Circular List of the Potentially Hazardous Asteroids (PHAs), Minor Planet Center PHA Close Approaches To The Earth, Minor Planet Center List Of Amor Minor Planets (by designation), Minor Planet Center 2002AT4 2002AT4 # Category:Minor planet object articles (unnumbered) # # 20020108