1041 Asta

{{Short description|Carbonaceous background asteroid}} {{Use dmy dates|date=October 2019}} {{Infobox planet | minorplanet = yes | name = 1041 Asta | background = #D6D6D6 | image = | image_size = | caption = | discovery_ref = <ref name="jpldata" /> | discoverer = K. Reinmuth | discovery_site = Heidelberg Obs. | discovered = 22 March 1925 | mpc_name = (1041) Asta | alt_names = 1925 FA{{·}}{{mp|1938 SJ|1}} 1949 UQ{{·}}1949 UX {{mp|1951 CQ|1}}{{·}}1956 AT A906 VA{{·}}A917 YB | pronounced = | named_after = Asta Nielsen<ref name="springer" /> {{small|(Danish actress)}} | mp_category = main-belt{{·}}{{small|(outer)}}<ref name="lcdb" /> background<ref name="Ferret" /> | orbit_ref = <ref name="jpldata" /> | epoch = 4 September 2017 (JD 2458000.5) | uncertainty = 0 | observation_arc = 110.65 yr (40,416 days) | aphelion = 3.5142 AU | perihelion = 2.6335 AU | semimajor = 3.0738 AU | eccentricity = 0.1433 | period = 5.39 yr (1,968 days) | mean_anomaly = 203.59° | mean_motion = {{Deg2DMS|0.1829|sup=ms}} / day | inclination = 13.934° | asc_node = 60.001° | arg_peri = 343.95° | dimensions = {{val|43.46|10.89}} km<ref name="Nugent-2015" /> {{val|44.05|11.20}} km<ref name="Nugent-2016" /> {{val|49.43|0.78}} km<ref name="Masiero-2012" /> 57.16 km {{small|(derived)}}<ref name="lcdb" /> {{val|58.88|0.87}} km<ref name="AKARI" /> {{val|60.571|0.199}} km<ref name="Masiero-2014" /> {{val|61.852|1.162}} km<ref name="WISE" /> | rotation = {{val|7.554|0.001}} h<ref name="geneva-obs" /> {{val|7.99|0.02}} h<ref name="Carbo-2009a" /> | albedo = {{val|0.0421|0.0028}}<ref name="WISE" /> {{val|0.047|0.002}}<ref name="AKARI" /> {{val|0.047|0.006}}<ref name="Masiero-2014" /> 0.0493 {{small|(derived)}}<ref name="lcdb" /> {{val|0.066|0.010}}<ref name="Masiero-2012" /> {{val|0.07|0.04}}<ref name="Nugent-2015" /> {{val|0.08|0.06}}<ref name="Nugent-2016" /> | spectral_type = SMASS {{=}} C<ref name="jpldata" /><ref name="lcdb" />{{·}}C<ref name="Veres-2015" /> | abs_magnitude = {{val|10.08|0.31}}<ref name="Veres-2015" />{{·}}10.10<ref name="jpldata" /><ref name="lcdb" /><ref name="Nugent-2015" /><ref name="AKARI" /><ref name="Masiero-2012" /><ref name="WISE" />{{·}}10.17<ref name="Nugent-2016" /> }}

'''1041 Asta''', provisional designation {{mp|1925 FA}}, is a carbonaceous background asteroid from the outer regions of the asteroid belt, approximately 57 kilometers in diameter. It was discovered on 22 March 1925, by German astronomer Karl Reinmuth at the Heidelberg Observatory in southwest Germany.<ref name="MPC-object" /> The asteroid was likely named after Danish actress Asta Nielsen.

== Orbit and classification ==

''Asta'' is a non-family asteroid from the main belt's background population.<ref name="Ferret" /> It orbits the Sun in the outer main-belt at a distance of 2.6–3.5 AU once every 5 years and 5 months (1,968 days; semi-major axis of 3.07 AU). Its orbit has an eccentricity of 0.14 and an inclination of 14° with respect to the ecliptic.<ref name="jpldata" /> The asteroid was first observed as {{mp|A906 VA}} at Heidelberg in November 1906, where the body's observation arc begins one month later in December 1906.<ref name="MPC-object" />

== Physical characteristics ==

In the SMASS classification, ''Asta'' is a carbonaceous C-type asteroid.<ref name="jpldata" /> Pan-STARRS photometric survey also characterizes the asteroid as a C-type.<ref name="Veres-2015" />

=== Rotation period ===

Photometric observations of ''Asta'' collected at the Australian Oakley Southern Sky Observatory and the U.S. Oakley Observatory in October 2008 show a rotation period of 7.99 hours with a brightness variation of 0.22 magnitude ({{small|U=2+}}).<ref name="Carbo-2009a" /> In February 2010, a refined lightcurve with a period of 7.554 hours and an amplitude of 0.14 magnitude was obtained by French amateur astronomer Pierre Antonini, who also mentioned the possibility of an alternative period solution ({{small|U=3-}}).<ref name="geneva-obs" />

=== Diameter and albedo ===

According to the surveys carried out by the Japanese Akari satellite and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, ''Asta'' measures between 43.46 and 61.852 kilometers in diameter and its surface has an albedo between 0.0421 and 0.08.<ref name="Nugent-2015" /><ref name="Nugent-2016" /><ref name="Masiero-2012" /><ref name="AKARI" /><ref name="Masiero-2014" /><ref name="WISE" />

The ''Collaborative Asteroid Lightcurve Link'' derives an albedo of 0.0493 and a diameter of 57.16 kilometers based on an absolute magnitude of 10.1.<ref name="lcdb" />

== Naming ==

This minor planet was likely named after Danish actress Asta Nielsen (1881–1972), according to research by the author of the ''Dictionary of Minor Planet Names'', Lutz Schmadel (LDS). The naming was proposed by ARI-astronomer Gustav Stracke.<ref name="springer" />

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

<ref name="jpldata">{{cite web |type = 2017-07-05 last obs. |title = JPL Small-Body Database Browser: 1041 Asta (1925 FA) |url = https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001041 |publisher = Jet Propulsion Laboratory |accessdate = 10 January 2018}}</ref>

<ref name="springer">{{cite book |title = Dictionary of Minor Planet Names – (1041) Asta |last = Schmadel | first = Lutz D. |publisher = Springer Berlin Heidelberg |page = 89 |date = 2007 |isbn = 978-3-540-00238-3 |doi = 10.1007/978-3-540-29925-7_1042 |chapter = (1041) Asta }}</ref>

<ref name="MPC-object">{{cite web |title = 1041 Asta (1925 FA) |work = Minor Planet Center |url = https://www.minorplanetcenter.net/db_search/show_object?object_id=1041 |accessdate = 10 January 2018}}</ref>

<ref name="geneva-obs">{{cite web |title = Asteroids and comets rotation curves – (1041) Asta |last = Behrend |first = Raoul |publisher = Geneva Observatory |url = http://obswww.unige.ch/~behrend/page3cou.html#001041 |accessdate = 10 January 2018}}</ref>

<ref name="Masiero-2014">{{cite journal |display-authors = 6 |first1 = Joseph R. |last1 = Masiero |first2 = T. |last2 = Grav |first3 = A. K. |last3 = Mainzer |first4 = C. R. |last4 = Nugent |first5 = J. M. |last5 = Bauer |first6 = R. |last6 = Stevenson |first7 = S. |last7 = Sonnett |date = August 2014 |title = Main-belt Asteroids with WISE/NEOWISE: Near-infrared Albedos |journal = The Astrophysical Journal |volume = 791 |issue = 2 |page = 11 |bibcode = 2014ApJ...791..121M |doi = 10.1088/0004-637X/791/2/121 |arxiv = 1406.6645|s2cid = 119293330 }}</ref>

<ref name="Ferret">{{cite web |title = Asteroid 1041 Asta – Nesvorny HCM Asteroid Families V3.0 |work = Small Bodies Data Ferret |url = https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=1041+Asta |accessdate = 24 October 2019}}</ref>

<ref name="lcdb">{{cite LCDB|number = 1041 |accessdate = 10 January 2018}}</ref>

<ref name="AKARI">{{cite journal |display-authors = 6 |first1 = Fumihiko |last1 = Usui |first2 = Daisuke |last2 = Kuroda |first3 = Thomas G. |last3 = Müller |first4 = Sunao |last4 = Hasegawa |first5 = Masateru |last5 = Ishiguro |first6 = Takafumi |last6 = Ootsubo |first7 = Daisuke |last7 = Ishihara |first8 = Hirokazu |last8 = Kataza |first9 = Satoshi |last9 = Takita |first10 = Shinki |last10 = Oyabu |first11 = Munetaka |last11 = Ueno |first12 = Hideo |last12 = Matsuhara |first13 = Takashi |last13 = Onaka |date = October 2011 |title = Asteroid Catalog Using Akari: AKARI/IRC Mid-Infrared Asteroid Survey |journal = Publications of the Astronomical Society of Japan |volume = 63 |issue = 5 |pages = 1117–1138 |bibcode = 2011PASJ...63.1117U |doi = 10.1093/pasj/63.5.1117 |doi-access= free }} ([http://vizier.cfa.harvard.edu/viz-bin/VizieR-5?-source=J/PASJ/63/1117/acua_v1&Num=1041 online], [https://core.ac.uk/download/pdf/43545172.pdf AcuA catalog p. 153])</ref>

<ref name="WISE">{{cite journal |display-authors = 6 |first1 = A. |last1 = Mainzer |first2 = T. |last2 = Grav |first3 = J. |last3 = Masiero |first4 = E. |last4 = Hand |first5 = J. |last5 = Bauer |first6 = D. |last6 = Tholen |first7 = R. S. |last7 = McMillan |first8 = T. |last8 = Spahr |first9 = R. M. |last9 = Cutri |first10 = E. |last10 = Wright |first11 = J. |last11 = Watkins |first12 = W. |last12 = Mo |first13 = C. |last13 = Maleszewski |date = November 2011 |title = NEOWISE Studies of Spectrophotometrically Classified Asteroids: Preliminary Results |journal = The Astrophysical Journal |volume = 741 |issue = 2 |page = 25 |bibcode = 2011ApJ...741...90M |doi = 10.1088/0004-637X/741/2/90 |arxiv = 1109.6407|s2cid = 35447010 }}</ref>

<ref name="Masiero-2012">{{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 = C. |last6 = Nugent |first7 = M. S. |last7 = Cabrera |date = November 2012 |title = Preliminary Analysis of WISE/NEOWISE 3-Band Cryogenic and Post-cryogenic Observations of Main Belt Asteroids |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2012ApJ...759L...8M |journal = The Astrophysical Journal Letters |volume = 759 |issue = 1 |page = 5 |bibcode = 2012ApJ...759L...8M |doi = 10.1088/2041-8205/759/1/L8 |arxiv = 1209.5794 |s2cid = 46350317 |access-date= 10 January 2018}}</ref>

<ref name="Nugent-2015">{{cite journal |display-authors = 6 |first1 = C. R. |last1 = Nugent |first2 = A. |last2 = Mainzer |first3 = J. |last3 = Masiero |first4 = J. |last4 = Bauer |first5 = R. M. |last5 = Cutri |first6 = T. |last6 = Grav |first7 = E. |last7 = Kramer |first8 = S. |last8 = Sonnett |first9 = R. |last9 = Stevenson |first10 = E. L. |last10 = Wright |date = December 2015 |title = NEOWISE Reactivation Mission Year One: Preliminary Asteroid Diameters and Albedos |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2015ApJ...814..117N |journal = The Astrophysical Journal |volume = 814 |issue = 2 |page = 13 |bibcode = 2015ApJ...814..117N |doi = 10.1088/0004-637X/814/2/117 |arxiv = 1509.02522 |s2cid = 9341381 |access-date= 10 January 2018}}</ref>

<ref name="Nugent-2016">{{cite journal |display-authors = 6 |first1 = C. R. |last1 = Nugent |first2 = A. |last2 = Mainzer |first3 = J. |last3 = Bauer |first4 = R. M. |last4 = Cutri |first5 = E. A. |last5 = Kramer |first6 = T. |last6 = Grav |first7 = J. |last7 = Masiero |first8 = S. |last8 = Sonnett |first9 = E. L. |last9 = Wright |date = September 2016 |title = NEOWISE Reactivation Mission Year Two: Asteroid Diameters and Albedos |journal = The Astronomical Journal |volume = 152 |issue = 3 |page = 12 |bibcode = 2016AJ....152...63N |doi = 10.3847/0004-6256/152/3/63 |arxiv = 1606.08923 |doi-access = free }}</ref>

<ref name="Carbo-2009a">{{Cite journal |display-authors = 6 |first1 = Landy |last1 = Carbo |first2 = Katherine |last2 = Kragh |first3 = Jonathan |last3 = Krotz |first4 = Andrew |last4 = Meiers |first5 = Nelson |last5 = Shaffer |first6 = Steven |last6 = Torno |first7 = Jason |last7 = Sauppe |first8 = Richard |last8 = Ditteon |date = July 2009 |title = Asteroid Lightcurve Analysis at the Oakley Southern Sky Observatory and Oakley Observatory: 2008 September and October |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2009MPBu...36...91C |journal = The Minor Planet Bulletin |volume = 36 |issue = 3 |pages = 91–94 |issn = 1052-8091 |bibcode = 2009MPBu...36...91C |access-date= 10 January 2018}}</ref>

<ref name="Veres-2015">{{cite journal |display-authors = 6 |first1 = Peter |last1 = Veres |first2 = Robert |last2 = Jedicke |first3 = Alan |last3 = Fitzsimmons |first4 = Larry |last4 = Denneau |first5 = Mikael |last5 = Granvik |first6 = Bryce |last6 = Bolin |first7 = Serge |last7 = Chastel |first8 = Richard J. |last8 = Wainscoat |first9 = William S. |last9 = Burgett |first10 = Kenneth C. |last10 = Chambers |first11 = Heather |last11 = Flewelling |first12 = Nick |last12 = Kaiser |first13 = Eugen A. |last13 = Magnier |first14 = Jeff S. |last14 = Morgan |first15 = Paul A. |last15 = Price |first16 = John L. |last16 = Tonry |first17 = Christopher |last17 = Waters |date = November 2015 |title = Absolute magnitudes and slope parameters for 250,000 asteroids observed by Pan-STARRS PS1 - Preliminary results |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2015Icar..261...34V |journal = Icarus |volume = 261 |pages = 34–47 |bibcode = 2015Icar..261...34V |doi = 10.1016/j.icarus.2015.08.007 |arxiv = 1506.00762 |s2cid = 53493339 |access-date= 10 January 2018}}</ref>

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== External links == * [http://www.minorplanet.info/PHP/lcdbsummaryquery.php Asteroid Lightcurve Database (LCDB)], query form ([http://www.minorplanet.info/lightcurvedatabase.html info] {{Webarchive|url=https://web.archive.org/web/20171216050541/http://www.minorplanet.info/lightcurvedatabase.html |date=16 December 2017 }}) * [https://books.google.com/books?id=aeAg1X7afOoC&pg Dictionary of Minor Planet Names], Google books * [http://obswww.unige.ch/~behrend/page_cou.html Asteroids and comets rotation curves, CdR] – Observatoire de Genève, Raoul Behrend * [https://www.minorplanetcenter.net/iau/lists/NumberedMPs000001.html Discovery Circumstances: Numbered Minor Planets (1)-(5000)] – Minor Planet Center * {{AstDys|1041}} * {{JPL small body}}

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{{DEFAULTSORT:Asta}} 001041 Category:Discoveries by Karl Wilhelm Reinmuth Category:Named minor planets 001041 19250322