7742 Altamira
{{Short description|Asteroid}}
{{Use dmy dates|date=October 2019}}
{{Infobox planet
| minorplanet = yes
| name = 7742 Altamira
| background = #D6D6D6
| image =
| image_size =
| caption =
| discovered = 20 October 1985
| discoverer = A. Mrkos
| discovery_site = Kleť Obs.
| mpc_name = (7742) Altamira
| alt_names = 1985 US{{·}}{{mp|1996 BP|2}}
| named_after = Cave of Altamira
{{small|(World Heritage Site)}}
| mp_category = main-belt{{·}}{{small|(middle)}}
Henan
| epoch = 4 September 2017 (JD 2458000.5)
| uncertainty = 0
| observation_arc = 31.07 yr (11,349 days)
| aphelion = 2.9419 AU
| perihelion = 2.4989 AU
| semimajor = 2.7204 AU
| eccentricity = 0.0814
| period = 4.49 yr (1,639 days)
| mean_anomaly = 8.9755°
| mean_motion = {{Deg2DMS|0.2197|sup=ms}} / day
| inclination = 4.1454°
| asc_node = 124.91°
| arg_peri = 293.48°
| dimensions = {{val|6.477|0.174}} km
8.74 km {{small|(calculated)}}
| rotation = {{val|2.700|0.010}} h
| albedo = 0.057 {{small|(assumed)}}
{{val|0.184|0.038}}
| spectral_type = L {{·}}C {{small|(assumed)}}
| abs_magnitude = 13.6{{·}}{{val|13.570|0.090}} {{small|(R)}}{{·}}{{val|13.64|0.22}}{{·}}13.4{{·}}14.02
}}
7742 Altamira, provisional designation {{mp|1985 US}}, is a Henan asteroid from the central region of the asteroid belt, approximately 7 kilometers in diameter. It was discovered by Czech astronomer Antonín Mrkos at the South Bohemian Kleť Observatory in the Czech Republic, on 20 October 1985. It was named for the Cave of Altamira in Spain.
Orbit and classification
Altamira is a member of the Henan family ({{small|532}}), a large asteroid family in the intermediate main-belt, named after 2085 Henan.{{rp|23}} It orbits the Sun in the central asteroid belt at a distance of 2.5–2.9 AU once every 4 years and 6 months (1,639 days; semi-major axis of 2.72 AU). Its orbit has an eccentricity of 0.08 and an inclination of 4° with respect to the ecliptic. The body's observation arc begins at Palomar Observatory in May 1988, two and a half years after its official discovery observation at Klet.
Physical characteristics
= Spectral type =
Altamira has been characterized as an L-type asteroid by Pan-STARRS photometric survey, which agrees with the overall spectral type for members of the Henan family.{{rp|23}}
= Rotation period =
In January 2014, a rotational lightcurve of Altamira was obtained from photometric observation by astronomers at the Palomar Transient Factory in California. Lightcurve analysis gave a short rotation period of {{val|2.7}} hours with a brightness amplitude of 0.11 magnitude ({{small|U=2}}).
= Diameter and albedo =
According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Altamira measures 6.5 kilometers in diameter, and its surface has an albedo of 0.184. The Collaborative Asteroid Lightcurve Link assumes a standard albedo for carbonaceous asteroids of 0.057 and consequently calculates a larger diameter of 8.7 kilometers.
Naming
This minor planet was named after the famous Cave of Altamira, located in northern Spain. Discovered in 1879, its prehistoric cave paintings feature drawings of wild bison, deer, horses and boar, as well as handprints of the artists who created them. The cave with its paintings has been declared a UNESCO World Heritage Site. The asteroid's name was proposed by Czech astronomer Miloš Tichý. The official naming citation was published by the Minor Planet Center on 24 June 2002 ({{small|M.P.C. 46008}}).
References
{{reflist|30em|refs=
|type = 2016-11-15 last obs.
|title = JPL Small-Body Database Browser: 7742 Altamira (1985 US)
|url = https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2007742
|publisher = Jet Propulsion Laboratory
|access-date = 22 June 2017}}
|last = Schmadel | first = Lutz D.
|title = Dictionary of Minor Planet Names |publisher = Springer Berlin Heidelberg
|page = 613
|date = 2007
|isbn = 978-3-540-00238-3
|doi = 10.1007/978-3-540-29925-7_6653 |chapter = (7742) Altamira }}
|title = 7742 Altamira (1985 US)
|work = Minor Planet Center
|url = https://www.minorplanetcenter.net/db_search/show_object?object_id=7742
|access-date = 13 May 2016}}
|title = MPC/MPO/MPS Archive
|work = Minor Planet Center
|url = https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html
|access-date = 13 May 2016}}
|title = Asteroid 7742 Altamira – Nesvorny HCM Asteroid Families V3.0
|work = Small Bodies Data Ferret
|url = https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=7742+Altamira#Asteroid%207742%20AltamiraEAR-A-VARGBDET-5-NESVORNYFAM-V3.0
|access-date = 27 October 2019}}
|first1 = D. |last1 = Nesvorný
|first2 = M. |last2 = Broz
|first3 = V. |last3 = Carruba
|date = December 2014
|chapter = Identification and Dynamical Properties of Asteroid Families
|title = Asteroids IV
|pages = 297–321
|bibcode = 2015aste.book..297N
|doi = 10.2458/azu_uapress_9780816532131-ch016
|arxiv = 1502.01628
|isbn = 978-0-8165-3213-1}}
|title = LCDB Data for (7742) Altamira
|publisher = Asteroid Lightcurve Database (LCDB)
|url = http://www.minorplanet.info/PHP/generateOneAsteroidInfo.php?AstInfo=7742%7CAltamira
|access-date = 13 May 2016}}
|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
|url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2011ApJ...741...90M
|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
|access-date= 13 May 2016}}
|display-authors = 6
|first1 = Chan-Kao |last1 = Chang
|first2 = Wing-Huen |last2 = Ip |author-link2= Ip Wing-huen
|first3 = Hsing-Wen |last3 = Lin
|first4 = Yu-Chi |last4 = Cheng
|first5 = Chow-Choong |last5 = Ngeow
|first6 = Ting-Chang |last6 = Yang
|first7 = Adam |last7 = Waszczak
|first8 = Shrinivas R. |last8 = Kulkarni
|first9 = David |last9 = Levitan
|first10 = Branimir |last10 = Sesar
|first11 = Russ |last11 = Laher
|first12 = Jason |last12 = Surace
|first13 = Thomas. A. |last13 = Prince
|date = August 2015
|title = Asteroid Spin-rate Study Using the Intermediate Palomar Transient Factory
|url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2015ApJS..219...27C
|journal = The Astrophysical Journal Supplement Series
|volume = 219
|issue = 2
|page = 19
|bibcode = 2015ApJS..219...27C
|doi = 10.1088/0067-0049/219/2/27
|arxiv = 1506.08493
|access-date= 13 May 2016}}
|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= 13 May 2016}}
|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
|access-date= 4 December 2016}}
}}
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://minorplanetcenter.net/iau/lists/NumberedMPs005001.html Discovery Circumstances: Numbered Minor Planets (5001)-(10000)] – Minor Planet Center
- {{AstDys|7742}}
- {{JPL small body}}
{{Minor planets navigator |7741 Fedoseev |number=7742 | }}
{{Small Solar System bodies}}
{{Authority control}}
{{DEFAULTSORT:Altamira}}