View source for 3568 ASCII

{{Short description|Asteroid}}
{{Use dmy dates|date=May 2018}}
{{Infobox planet
 | minorplanet     = yes
 | name            = 3568 ASCII
 | background      = #D6D6D6
 | image           = 
 | image_size      = 
 | caption         = 
 | discovery_ref   = <ref name="MPC-object" />
 | discoverer      = [[Marguerite Laugier|M. Laugier]]
 | discovery_site  = [[Nice Observatory|Nice Obs.]]
 | discovered      = 17 October 1936
 | mpc_name        = (3568) ASCII
 | alt_names       = 1936 UB{{·}}{{mp|1975 WZ|1}}
 | pronounced      = 
 | named_after     = [[ASCII]] / [[ASCII (magazine)|''ASCII'' (magazine)]] {{nowrap|{{small|(character code and magazine)}}<ref name="MPC-object" />}}
 | mp_category     = [[main-belt]]<ref name="MPC-object" /><ref name="jpldata" />{{·}}{{small|([[Kirkwood gap|outer]])}}<br />[[Background asteroid|background]]<ref name="Ferret" />
 | orbit_ref       = <ref name="jpldata" />
 | epoch           = 23 March 2018 ([[Julian day|JD]] 2458200.5)
 | uncertainty     = 0
 | observation_arc = 81.52 [[Julian year (astronomy)|yr]] (29,776 d)
 | aphelion        = 3.8974 [[Astronomical unit|AU]]
 | perihelion      = 2.4073 AU
 | semimajor       = 3.1523 AU
 | eccentricity    = 0.2363
 | period          = 5.60 yr (2,044 d)
 | mean_anomaly    = 264.51[[Degree (angle)|°]]
 | mean_motion     = {{Deg2DMS|0.1761|sup=ms}} / day
 | inclination     = 19.454°
 | asc_node        = 58.210°
 | arg_peri        = 280.22°
 | tisserand       = 3.0770
 | mean_diameter   = {{val|23.752|0.211|ul=km}}<ref name="Masiero-2011" />
 | rotation        = 
 | albedo          = {{val|0.045|0.007}}<ref name="Masiero-2011" />
 | spectral_type   = [[D-type asteroid|D]] {{small|([[Sloan Digital Sky Survey|SDSS]]-MOC)}}<ref name="SDSS-Taxonomy" />
 | abs_magnitude   = 11.8<ref name="jpldata" />
}}

'''3568 ASCII''', provisional designation {{mp|1936 UB}}, is a dark background [[asteroid]] from the outer regions of the [[asteroid belt]], approximately {{convert|24|km|mi|abbr=off|sigfig=2|sp=us}} in diameter. It was discovered on 17 October 1936, by French astronomer [[Marguerite Laugier]] at the [[Nice Observatory]] in southwestern France. In 1988, the [[D-type asteroid]] was named after both the computer character code [[ASCII]] and the [[ASCII (magazine)|Japanese computer magazine]] with the same name.<ref name="MPC-object" />

== Orbit and classification ==

''ASCII'' is a non-[[Asteroid family|family]] asteroid from the main belt's [[Background asteroid|background population]].<ref name="Ferret" /> It orbits the Sun in the [[Kirkwood gap|outer]] main-belt at a distance of 2.4–3.9&nbsp;[[Astronomical unit|AU]] once every 5 years and 7 months (2,044 days; [[semi-major axis]] of 3.15&nbsp;AU). Its orbit has an [[orbital eccentricity|eccentricity]] of 0.24 and an [[orbital inclination|inclination]] of 19[[Degree (angle)|°]] with respect to the [[ecliptic]].<ref name="jpldata" />

The body's [[observation arc]] begins with its observation as {{mp|1975 WZ|1}} at the [[Karl Schwarzschild Observatory]] in November 1975, or more than 39 years after its official discovery observation at Nice.<ref name="MPC-object" />

== Physical characteristics ==

''ASCII'' has an [[absolute magnitude]] of 11.8.<ref name="jpldata" /> Based on the Moving Object Catalog (MOC) of the [[Sloan Digital Sky Survey]], the body has a [[Asteroid spectral type|spectral type]] of a very dark [[D-type asteroid]],<ref name="SDSS-Taxonomy" /> typically found in the outer main-belt and numerous among the [[Jupiter trojan]]s. As of 2018, no rotational [[lightcurve]] of this asteroid has been obtained from [[Photometry (astronomy)|photometric]] observations. The body's [[rotation period]], [[Poles of astronomical bodies|pole]] and shape remain unknown.<ref name="jpldata" />

=== Diameter and albedo ===

According to the survey carried out by the [[NEOWISE]] mission of NASA's [[Wide-field Infrared Survey Explorer]], ''ASCII'' measures 23.752 kilometers in diameter and its surface has an [[astronomical albedo|albedo]] of 0.045.<ref name="Masiero-2011" />

== Naming ==

This [[minor planet]] was named after the acronym for ''American Standard Code for Information Interchange'', [[ASCII]], a computer character code and the name of a major [[ASCII (magazine)|Japanese magazine on microcomputers]].<ref name="MPC-object" /> The name was proposed by [[Syuichi Nakano]], who identified this asteroid during his stay at the [[Smithsonian Astrophysical Observatory]]; a stay which was partially funded by articles he wrote for the principal Japanese ASCII magazine. The official naming citation was published by the [[Minor Planet Center]] on 2 April 1988 ({{small|[[Minor Planet Circulars|M.P.C.]] 12973}}).<ref name="MPC-Circulars-Archive" />

== References ==
{{reflist|30em|refs=

<ref name="jpldata">{{cite web
  |type       = 2018-04-26 last obs.
  |title      = JPL Small-Body Database Browser: 3568 ASCII (1936 UB)
  |url        = https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2003568
  |publisher  = [[Jet Propulsion Laboratory]]
  |access-date = 23 May 2018}}</ref>

<ref name="MPC-object">{{cite web
  |title      = 3568 ASCII (1936 UB)
  |work       = Minor Planet Center
  |url        = https://www.minorplanetcenter.net/db_search/show_object?object_id=3568
  |access-date = 23 May 2018}}</ref>

<ref name="MPC-Circulars-Archive">{{cite web
  |title      = MPC/MPO/MPS Archive
  |work       = Minor Planet Center
  |url        = https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html
  |access-date = 23 May 2018}}</ref>

<ref name="Ferret">{{cite web
  |title      = Asteroid 3568 ASCII
  |work       = Small Bodies Data Ferret
  |url        = https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=3568+ASCII
  |access-date = 23 May 2018}}</ref>

<ref name="Masiero-2011">{{cite journal
  |display-authors = 6
  |first1     = Joseph R. |last1 = Masiero
  |first2     = A. K. |last2 = Mainzer
  |first3     = T. |last3 = Grav
  |first4     = J. M. |last4 = Bauer
  |first5     = R. M. |last5 = Cutri
  |first6     = J. |last6 = Dailey
  |first7     = P. R. M. |last7 = Eisenhardt
  |first8     = R. S. |last8 = McMillan
  |first9     = T. B. |last9 = Spahr
  |first10    = M. F. |last10 = Skrutskie
  |first11    = D. |last11 = Tholen
  |first12    = R. G. |last12 = Walker
  |first13    = E. L. |last13 = Wright
  |first14    = E. |last14 = DeBaun
  |first15    = D. |last15 = Elsbury
  |first16    = T. IV |last16 = Gautier
  |first17    = S. |last17 = Gomillion
  |first18    = A. |last18 = Wilkins
  |date       = November 2011
  |title      = Main Belt Asteroids with WISE/NEOWISE. I. Preliminary Albedos and Diameters
  |url        = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2011ApJ...741...68M
  |journal    = The Astrophysical Journal
  |volume     = 741
  |issue      = 2
  |page       = 20
  |bibcode    = 2011ApJ...741...68M
  |doi        = 10.1088/0004-637X/741/2/68
  |arxiv      = 1109.4096
  |s2cid = 118745497 |access-date= 23 May 2018}}</ref>

<ref name="SDSS-Taxonomy">{{Cite journal
  |first1     = J. M. |last1 = Carvano
  |first2     = P. H. |last2 = Hasselmann
  |first3     = D. |last3 = Lazzaro
  |first4     = T. |last4 = Mothé-Diniz
  |date       = February 2010
  |title      = SDSS-based taxonomic classification and orbital distribution of main belt asteroids
  |url        = https://sbnarchive.psi.edu/pds3/non_mission/EAR_A_I0035_5_SDSSTAX_V1_1/data/sdsstax_ast_table.tab
  |journal    = Astronomy and Astrophysics
  |volume     = 510
  |page       = 12
  |bibcode    = 2010A&A...510A..43C 
  |doi        = 10.1051/0004-6361/200913322
  |access-date= 30 October 2019|doi-access= free
  }} [https://sbn.psi.edu/pds/resource/sdsstax.html (PDS data set)]</ref>

}} <!-- end of reflist -->

== External links ==
* [https://books.google.com/books?id=aeAg1X7afOoC&pg Dictionary of Minor Planet Names], Google books
* [https://www.minorplanetcenter.net/iau/lists/NumberedMPs000001.html Discovery Circumstances: Numbered Minor Planets (1)-(5000)] – Minor Planet Center
* {{AstDys|3568}}
* {{JPL small body}}

{{Minor planets navigator |3567 Alvema | number=3568 |3569 Kumon}}
{{Small Solar System bodies}}
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{{DEFAULTSORT:ASCII}}
[[Category:Background asteroids|003568]]
[[Category:Discoveries by Marguerite Laugier]]
[[Category:Named minor planets]]
[[Category:Astronomical objects discovered in 1936|19361017]]