{{Short description|Main-belt asteroid}} {{Use dmy dates|date=October 2019}} {{Infobox planet | minorplanet = yes | name = 1544 Vinterhansenia | background = #D6D6D6 | image = | image_size = | caption = | discovery_ref = <ref name="jpldata" /> | discovered = 15 October 1941 | discoverer = L. Oterma | discovery_site = Turku Obs. | mpc_name = (1544) Vinterhansenia | alt_names = 1941 UK{{·}}1928 DO<br />1937 RK{{·}}1939 CL<br />1948 QT{{·}}1974 YB<br />A906 DB{{·}}A919 UB | named_after = Julie Vinter Hansen<br />{{small|(astronomer)}}<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 = 111.12 yr (40,586 days) | aphelion = 2.6230 AU | perihelion = 2.1227 AU | semimajor = 2.3729 AU | eccentricity = 0.1054 | period = 3.66 yr (1,335 days) | mean_anomaly = 251.35° | mean_motion = {{Deg2DMS|0.2696|sup=ms}} / day | inclination = 3.3342° | asc_node = 59.973° | arg_peri = 356.51° | dimensions = {{val|20.76|2.50}} km<ref name="Nugent-2016" /><br />21.63 km {{small|(derived)}}<ref name="lcdb" /><br />{{val|21.71|1.5}} km<ref name="SIMPS" /><br />{{val|24.29|6.90}} km<ref name="Masiero-2012" /><br />{{val|24.561|0.080}} km<ref name="Masiero-2014" /><br />{{val|26.230|0.201}} km<ref name="WISE" /> | rotation = {{val|13.7|0.1}} h<ref name="Ivarsen-2004" /><br />{{val|13.77|0.01}} h<ref name="geneva-obs" /> | albedo = {{val|0.0404|0.0052}}<ref name="WISE" /><br />{{val|0.046|0.041}}<ref name="Masiero-2012" /><br />{{val|0.058|0.007}}<ref name="Masiero-2014" /><br />0.0599 {{small|(derived)}}<ref name="lcdb" /><br />{{val|0.06|0.01}}<ref name="Nugent-2016" /><br />{{val|0.0784|0.012}}<ref name="SIMPS" /> | spectral_type = X<ref name="Veres-2015" />{{·}}C<ref name="lcdb" /> | abs_magnitude = 11.7<ref name="SIMPS" /><ref name="WISE" />{{·}}12.0<ref name="jpldata" /><ref name="lcdb" />{{·}}12.02<ref name="Nugent-2016" />{{·}}12.05<ref name="Masiero-2012" />{{·}}{{val|12.06|0.25}}<ref name="Veres-2015" /> }}
'''1544 Vinterhansenia''' (provisional designation '''{{mp|1941 UK}}''') is a dark asteroid from the inner regions of the asteroid belt, approximately 22 kilometers in diameter. It was discovered on 15 October 1941, by Finnish astronomer Liisi Oterma at Turku Observatory in Southwest Finland, and named for Danish astronomer Julie Vinter Hansen.<ref name="springer" /><ref name="MPC-Vinterhansenia" />
== Orbit and classification ==
Vinterhansenia is classified as both C-type and X-type asteroid.<ref name="lcdb" /><ref name="Veres-2015" /> It orbits the Sun in the inner main-belt at a distance of 2.1–2.6 AU once every 3 years and 8 months (1,335 days). Its orbit has an eccentricity of 0.11 and an inclination of 3° with respect to the ecliptic.<ref name="jpldata" /> Vinterhansenia was first identified as {{mp|A906 DB}} at Heidelberg Observatory in 1906. Its first used observation, {{mp|1928 DO}}, was also taken at Heidelberg in 1928, and extends the body's observation arc by 13 years prior to its official discovery observation at Turku in 1941.
== Lightcurves ==
Two rotational lightcurves of Vinterhansenia were obtained from photometric observations taken by Kevin Ivarsen in October 2003, and Laurent Bernasconi in March 2005. Lightcurve analysis gave a rotation period of 13.7 and 13.77 hours with a brightness variation of 0.15 and 0.18 magnitude, respectively ({{small|U=2/2}}).<ref name="Ivarsen-2004" /><ref name="geneva-obs" />
== Diameter and albedo ==
According to the space-based surveys carried out by the Infrared Astronomical Satellite IRAS, and NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Vinterhansenia measures between 20.76 and 26.23 kilometers in diameter, and its surface has an albedo between 0.040 and 0.078.<ref name="Nugent-2016" /><ref name="SIMPS" /><ref name="Masiero-2012" /><ref name="Masiero-2014" /><ref name="WISE" /> The ''Collaborative Asteroid Lightcurve Link'' assumes an albedo of 0.0599 and a diameter of 21.63 kilometers with an absolute magnitude of 12.0.<ref name="lcdb" />
== Naming ==
This minor planet was named for Danish astronomer Julie Vinter Hansen (1890–1960), who worked at the Copenhagen Observatory and was director of the International Astronomical Union's telegram bureau and Editor of its Circulars ''(also see Central Bureau for Astronomical Telegrams)''<ref name="springer" /> The official {{MoMP|1544|naming citation}} was published by the Minor Planet Center in January 1956 ({{small|M.P.C. 1350}}).<ref name="DoMP-Circular-dates" />
== References == <references>
<ref name="jpldata">{{cite web |type = 2017-03-31 last obs. |title = JPL Small-Body Database Browser: 1544 Vinterhansenia (1941 UK) |url = https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001544 |publisher = Jet Propulsion Laboratory |accessdate = 30 June 2017}}</ref>
<ref name="springer">{{cite book |title = Dictionary of Minor Planet Names – (1544) Vinterhansenia |last = Schmadel | first = Lutz D. |publisher = Springer Berlin Heidelberg |page = 122 |date = 2007 |isbn = 978-3-540-00238-3 |doi = 10.1007/978-3-540-29925-7_1545 |chapter = (1544) Vinterhansenia }}</ref>
<ref name="MPC-Vinterhansenia">{{cite web |title = 1544 Vinterhansenia (1941 UK) |work = Minor Planet Center |url = https://www.minorplanetcenter.net/db_search/show_object?object_id=1544 |accessdate = 30 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. |date = 2009 |publisher = Springer Berlin Heidelberg |page = 221 |isbn = 978-3-642-01964-7 |doi = 10.1007/978-3-642-01965-4|bibcode = 2009dmpn.book.....S }}</ref>
<ref name="geneva-obs">{{cite web |title = Asteroids and comets rotation curves – (1544) Vinterhansenia |last = Behrend |first = Raoul |publisher = Geneva Observatory |url = http://obswww.unige.ch/~behrend/page4cou.html#001544 |accessdate = 30 December 2016}}</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 |s2cid = 119293330 |access-date= 30 December 2016}}</ref>
<ref name="lcdb">{{cite LCDB|number = 1544 |accessdate = 30 December 2016}}</ref>
<ref name="SIMPS">{{cite journal |first1 = E. F. |last1 = Tedesco |first2 = P. V. |last2 = Noah |first3 = M. |last3 = Noah |first4 = S. D. |last4 = Price |date = October 2004 |title = IRAS Minor Planet Survey V6.0 |url = https://sbnarchive.psi.edu/pds3/iras/IRAS_A_FPA_3_RDR_IMPS_V6_0/data/diamalb.tab |journal = NASA Planetary Data System |volume = 12 |pages = IRAS-A-FPA-3-RDR-IMPS-V6.0 |bibcode = 2004PDSS...12.....T |accessdate = 22 October 2019}}</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= 30 December 2016}}</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="Ivarsen-2004">{{Cite journal |first1 = Kevin |last1 = Ivarsen |first2 = Sarah |last2 = Willis |first3 = Laura |last3 = Ingleby |first4 = Dan |last4 = Matthews |first5 = Melanie |last5 = Simet |date = June 2004 |title = CCD observations and period determination of fifteen minor planets |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2004MPBu...31...29I |journal = The Minor Planet Bulletin |volume = 31 |issue = 2 |pages = 29–33 |issn = 1052-8091 |bibcode = 2004MPBu...31...29I |access-date= 30 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 |s2cid = 53493339 |access-date= 30 December 2016}}</ref>
</references> <!-- end of reflist -->
== 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|1544}} * {{JPL small body}}
{{Minor planets navigator |1543 Bourgeois |number=1544 |1545 Thernöe}} {{Small Solar System bodies}} {{Authority control}}
{{DEFAULTSORT:Vinterhansenia}} 001544 Category:Discoveries by Liisi Oterma Category:Named minor planets 19411015