{{Short description|Main-belt asteroid}} {{Use dmy dates|date=October 2019}} {{Infobox planet | minorplanet = yes | name = 1619 Ueta | background = #D6D6D6 | image = 001619-asteroid shape model (1619) Ueta.png | image_scale = | caption = Shape model of ''Ueta'' from its lightcurve | discovery_ref = <ref name="jpldata" /> | discovered = 11 October 1953 | discoverer = T. Mitani | discovery_site = Kwasan Obs. ({{small|377}}) | mpc_name = (1619) Ueta | alt_names = 1953 TA{{·}}1926 RR<br />1931 AO{{·}}1940 YJ<br />{{mp|1951 AG|1}}{{·}}1978 GM | named_after = Mr Ueta<br />{{small|(observatory's director)}}<ref name="springer" /> | mp_category = main-belt{{·}}{{small|(inner)}}<ref name="lcdb" /> | orbit_ref = <ref name="jpldata" /> | epoch = 4 September 2017 (JD 2458000.5) | uncertainty = 0 | observation_arc = 85.68 yr (31,293 days) | aphelion = 2.6368 AU | perihelion = 1.8454 AU | semimajor = 2.2411 AU | eccentricity = 0.1766 | period = 3.35 yr (1,225 days) | mean_anomaly = 5.9446° | mean_motion = {{Deg2DMS|0.2938|sup=ms}} / day | inclination = 6.2142° | asc_node = 61.494° | arg_peri = 328.18° | dimensions = {{val|7.13|0.40}} km<ref name="Masiero-2012" /><br />{{val|8.965|0.124}} km<ref name="Masiero-2014" /><br />{{val|9.927|0.066}} km<ref name="WISE" /><br />11.04 km {{small|(calculated)}}<ref name="lcdb" /> | rotation = {{val|2.717943|0.000005}} h<ref name="Hanus-2013c" /><br />{{val|2.7180|0.0005}} h<ref name="Kryszczynska-2012b" /><br />{{val|2.718238|0.000001}} h<ref name="Durech-2016" /><br />{{val|2.720|0.002}} h<ref name="Higgins-2011a" /><br />{{val|2.720|0.005}} h<ref name="Stephens-2011b" /><br />{{val|2.94}} h {{small|(dated)}}<ref name="Almeida-2004" /> | albedo = 0.20 {{small|(assumed)}}<ref name="lcdb" /><br />{{val|0.2517|0.0317}}<ref name="WISE" /><br />{{val|0.479|0.056}}<ref name="Masiero-2012" /> | spectral_type = Tholen = S<ref name="jpldata" />{{·}}S<ref name="lcdb" /><ref name="Veres-2015" /><br />B–V = 0.900<ref name="jpldata" /><br />U–B = 0.546<ref name="jpldata" /> | abs_magnitude = {{val|12.48|0.28}}<ref name="Veres-2015" />{{·}}12.15<ref name="jpldata" /><ref name="lcdb" /><ref name="Masiero-2012" /><ref name="WISE" /> }}
'''1619 Ueta''', provisional designation {{mp|1953 TA}}, is a stony asteroid from the inner regions of the asteroid belt, approximately 11 kilometers in diameter. It was discovered on 11 October 1953, by Japanese astronomer Tetsuyasu Mitani at Kyoto University's Kwasan Observatory ({{small|377}}), near Kyoto, Japan.<ref name="MPC-Ueta" /> It was named after the former director of the discovering observatory.<ref name="springer" />
== Classification and orbit ==
''Ueta'' is a S-type asteroid, that orbits the Sun in the inner main-belt at a distance of 1.8–2.6 AU once every 3 years and 4 months (1,225 days). Its orbit has an eccentricity of 0.18 and an inclination of 6° with respect to the ecliptic.<ref name="jpldata" />
It was first identified as {{mp|1926 RR}} at Johannesburg in 1926. ''Ueta''{{'}}s observation arc begins 22 years prior to its official discovery observation with a precovery taken at Lowell Observatory in 1931.<ref name="MPC-Ueta" />
== Rotation period and pole ==
Several rotational lightcurves of ''Ueta'' were obtained from photometric observations. Best rated lightcurves were obtained by astronomers Robert Stephens and David Higgins in September 2009, securing an identical rotation period of 2.720 hours with a brightness variation of 0.35 and 0.39 magnitude, respectively ({{small|U=3/3}}).<ref name="Higgins-2011a" /><ref name="Stephens-2011b" /> Modeled lightcurves from various photometric data sources also gave a similar period of 2.717943 and 2.718238 hours ({{small|U=n.a.}}).<ref name="Hanus-2013c" /><ref name="Durech-2016" />
== Diameter and albedo ==
According to the survey carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, ''Ueta'' measures between 7.13 and 9.93 kilometers in diameter, and its surface has an albedo between 0.251 and 0.479.<ref name="Masiero-2012" /><ref name="Masiero-2014" /><ref name="WISE" /> The ''Collaborative Asteroid Lightcurve Link'' assumes a standard albedo for stony asteroids of 0.20 and calculates a diameter of 11.04 kilometers with an absolute magnitude of 12.15.<ref name="lcdb" />
== Naming ==
''Ueta'' was named by the discoverer for the former Director of Kwasan Observatory ''(also see {{section link||External links}})'' who encouraged him to keep on with his observations of minor planets and comets.<ref name="springer" /> The official {{MoMP|1619|naming citation}} was published by the Minor Planet Center on 1 February 1965 ({{small|M.P.C. 2347}}).<ref name="DoMP-Circular-dates" />
== References == <references>
<ref name="jpldata">{{cite web |type = 2016-09-14 last obs. |title = JPL Small-Body Database Browser: 1619 Ueta (1953 TA) |url = https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001619 |publisher = Jet Propulsion Laboratory |accessdate = 30 June 2017}}</ref>
<ref name="springer">{{cite book |title = Dictionary of Minor Planet Names – (1619) Ueta |last = Schmadel | first = Lutz D. |publisher = Springer Berlin Heidelberg |page = 128 |date = 2007 |isbn = 978-3-540-00238-3 |doi = 10.1007/978-3-540-29925-7_1620 |chapter = (1619) Ueta }}</ref>
<ref name="MPC-Ueta">{{cite web |title = 1619 Ueta (1953 TA) |work = Minor Planet Center |url = https://www.minorplanetcenter.net/db_search/show_object?object_id=1619 |accessdate = 28 December 2016}}</ref>
<ref name="DoMP-Circular-dates">{{cite book |title = Dictionary of Minor Planet Names – Addendum to Fifth Edition (2006–2008) |chapter = Appendix – Publication Dates of the MPCs |last = Schmadel |first=Lutz D. |publisher = Springer Berlin Heidelberg |page = 221 |isbn = 978-3-642-01964-7 |doi = 10.1007/978-3-642-01965-4}}</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 |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2014ApJ...791..121M |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 |access-date= 28 December 2016}}</ref>
<ref name="lcdb">{{cite LCDB|number = 1619 |accessdate = 28 December 2016}}</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}}</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 |access-date= 28 December 2016}}</ref>
<ref name="Almeida-2004">{{Cite journal |first1 = R. |last1 = Almeida |first2 = C. A. |last2 = Angeli |first3 = R. |last3 = Duffard |first4 = D. |last4 = Lazzaro |date = February 2004 |title = Rotation periods for small main-belt asteroids |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2004A&A...415..403A |journal = Astronomy and Astrophysics |volume = 415 |pages = 403–406 |bibcode = 2004A&A...415..403A |doi = 10.1051/0004-6361:20034585 |access-date= 28 December 2016|doi-access= free }}</ref>
<ref name="Stephens-2011b">{{Cite journal |author = Stephens, Robert D. |date = January 2011 |title = Asteroids Observed from GMARS and Santana Observatories: 2010 July - September |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2011MPBu...38...23S |journal = The Minor Planet Bulletin |volume = 38 |issue = 1 |pages = 23–24 |issn = 1052-8091 |bibcode = 2011MPBu...38...23S |access-date= 28 December 2016}}</ref>
<ref name="Higgins-2011a">{{Cite journal |author = Higgins, David |date = January 2011 |title = Period Determination of Asteroid Targets Observed at Hunters Hill Observatory: May 2009 - September 2010 |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2011MPBu...38...41H |journal = The Minor Planet Bulletin |volume = 38 |issue = 1 |pages = 41–46 |issn = 1052-8091 |bibcode = 2011MPBu...38...41H |access-date= 28 December 2016}}</ref>
<ref name="Kryszczynska-2012b">{{Cite journal |display-authors = 6 |first1 = A. |last1 = Kryszczynska |first2 = F. |last2 = Colas |first3 = M. |last3 = Polinska |first4 = R. |last4 = Hirsch |first5 = V. |last5 = Ivanova |first6 = G. |last6 = Apostolovska |first7 = B. |last7 = Bilkina |first8 = F. P. |last8 = Velichko |first9 = T. |last9 = Kwiatkowski |first10 = P. |last10 = Kankiewicz |first11 = F. |last11 = Vachier |first12 = V. |last12 = Umlenski |first13 = T. |last13 = Michalowski |first14 = A. |last14 = Marciniak |first15 = A. |last15 = Maury |first16 = K. |last16 = Kaminski |first17 = M. |last17 = Fagas |first18 = W. |last18 = Dimitrov |first19 = W. |last19 = Borczyk |first20 = K. |last20 = Sobkowiak |first21 = J. |last21 = Lecacheux |first22 = R. |last22 = Behrend |first23 = A. |last23 = Klotz |first24 = L. |last24 = Bernasconi |first25 = R. |last25 = Crippa |first26 = F. |last26 = Manzini |first27 = R. |last27 = Poncy |first28 = P. |last28 = Antonini |first29 = D. |last29 = Oszkiewicz |first30 = T. |last30 = Santana-Ros |date = October 2012 |title = Do Slivan states exist in the Flora family?. I. Photometric survey of the Flora region |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2012A&A...546A..72K |journal = Astronomy and Astrophysics |volume = 546 |page = 51 |bibcode = 2012A&A...546A..72K |doi = 10.1051/0004-6361/201219199 |access-date= 28 December 2016|doi-access= free }}</ref>
<ref name="Hanus-2013c">{{cite journal |display-authors = 6 |first1 = J. |last1 = Hanus |first2 = M. |last2 = Broz |first3 = J. |last3 = Durech |first4 = B. D. |last4 = Warner |first5 = J. |last5 = Brinsfield |first6 = R. |last6 = Durkee |first7 = D. |last7 = Higgins |first8 = R. A. |last8 = Koff |first9 = J. |last9 = Oey |first10 = F. |last10 = Pilcher |first11 = R. |last11 = Stephens |first12 = L. P. |last12 = Strabla |first13 = Q. |last13 = Ulisse |first14 = R. |last14 = Girelli |date = November 2013 |title = An anisotropic distribution of spin vectors in asteroid families |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2013A&A...559A.134H |journal = Astronomy and Astrophysics |volume = 559 |page = 19 |bibcode = 2013A&A...559A.134H |doi = 10.1051/0004-6361/201321993 |arxiv = 1309.4296 |access-date= 28 December 2016}}</ref>
<ref name="Durech-2016">{{cite journal |first1 = J. |last1 = Durech |first2 = J. |last2 = Hanus |first3 = D. |last3 = Oszkiewicz |first4 = R. |last4 = Vanco |date = March 2016 |title = Asteroid models from the Lowell photometric database |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2016A&A...587A..48D |journal = Astronomy and Astrophysics |volume = 587 |page = 6 |bibcode = 2016A&A...587A..48D |doi = 10.1051/0004-6361/201527573 |arxiv = 1601.02909 |access-date= 28 December 2016}}</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 |access-date= 28 December 2016}}</ref>
</references> <!-- end of reflist -->
== External links == * [http://www.kwasan.kyoto-u.ac.jp/old_pages/Kwasan/Kwasan-e.html Kwasan Observatory] – Kyoto University * [https://web.archive.org/web/20190329105408/https://www.kwasan.kyoto-u.ac.jp/index_en.html Kwasan and Hida observatories] * [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 * [https://www.minorplanetcenter.net/iau/lists/NumberedMPs000001.html Discovery Circumstances: Numbered Minor Planets (1)-(5000)] – Minor Planet Center * {{AstDys|1619}} * {{JPL small body}}
{{Minor planets navigator |1618 Dawn |number=1619 |1620 Geographos}} {{Small Solar System bodies}} {{Authority control}}
{{DEFAULTSORT:Ueta}} 001619 Category:Discoveries by Tetsuyasu Mitani Category:Named minor planets 001619 19531011