11264 Claudiomaccone
{{Short description|Stony background asteroid and binary system}}
{{Infobox planet
| minorplanet = yes
| name = 11264 Claudiomaccone
| background = #D6D6D6
| image =
| image_size =
| caption =
| discovered = 16 October 1979
| discoverer = N. Chernykh
| discovery_site = {{nowrap|Crimean Astrophysical Obs.}}
| mpc_name = 11264 Claudiomaccone
| alt_names = {{mp|1979 UC|4}}{{·}}{{mp|1989 EC|10}}
{{mp|1991 PD|14}}
| pronounced =
| named_after = Claudio Maccone
{{small|(Italian astronomer)}}
| mp_category = main-belt{{·}}{{small|((central))}}
background
| epoch = 4 September 2017 (JD 2458000.5)
| uncertainty = 0
| observation_arc = 66.27 yr (24,204 days)
| aphelion = 3.1793 AU
| perihelion = 1.9775 AU
| semimajor = 2.5784 AU
| eccentricity = 0.2331
| period = 4.14 yr (1,512 days)
| mean_anomaly = 21.409°
| mean_motion = {{Deg2DMS|0.2381|sup=ms}} / day
| inclination = 3.5229°
| asc_node = 11.129°
| arg_peri = 57.936°
| dimensions = {{val|3.203|0.295}} km
4.30 km {{small|(calculated)}}
| rotation = {{val|3.18701|0.00005}} h
{{val|3.1872|0.0006}} h
{{val|3.1872}} h
{{val|3.1873|0.0001}} h
| albedo = 0.20 {{small|(assumed)}}
{{val|0.432|0.094}}
| spectral_type = V–R = {{val|0.520|0.035}}
S{{·}}S/Q
| abs_magnitude = 14.0{{·}}14.2{{·}}14.3{{·}}{{val|14.44|0.25}}
}}
11264 Claudiomaccone (provisional designation {{mp|1979 UC|4}}) is a stony background asteroid and binary system from the middle regions of the asteroid belt, approximately 3 kilometers in diameter. It was discovered 16 October 1979, by Nikolai Chernykh at Crimean Astrophysical Observatory in Nauchnyj, on the Crimean peninsula. It was named after the Italian astronomer Claudio Maccone.
Orbit and classification
Claudiomaccone orbits the Sun in the (central) main-belt at a distance of 2.0–3.2 AU once every 4 years and 2 months (1,512 days). Its orbit has an eccentricity of 0.23 and an inclination of 4° with respect to the ecliptic. Claudiomaccone comes closer to Mars than to the other planets, repeatedly approaching the Red Planet as close as {{convert|0.47|AU|km|abbr=on|lk=off|sigfig=3}}. In 2096 it makes a very rare approach to 65 Gm.{{citation needed|date=April 2017}}
A first precovery was taken at Palomar Observatory in 1950, extending the body's observation arc by 29 years prior to its official discovery observation.
Physical characteristics
= Diameter and albedo =
According to the survey carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Claudiomaccone measures 3.203 kilometers in diameter and its surface has a high albedo of 0.432, while the Collaborative Asteroid Lightcurve Link assumes a standard albedo for stony S-type asteroids of 0.20 and calculates a diameter of 4.30 kilometers with an absolute magnitude of 14.2.
= Photometry =
In November 2004, a rotational lightcurve of Claudiomaccone was obtained from photometric observations by Ukrainian astronomer Yurij N. Krugly, using the 0.7-meter telescope at Chuguev Observation Station ({{small|121}}) and the 1-meter telescope at Simeiz Observatory. Lightcurve analysis gave a rotation period of 3.1872 hours with a brightness amplitude of 0.15 magnitude ({{small|U=n.a.}}). An identical period with an amplitude of 0.12 magnitude, was also published by Petr Pravec in 2006.
After the binary nature of Claudiomaccone was announced (see below), follow-up observations by a group of French, Swiss and Italian astronomers (including Claudio Maccone) in 2008 and 2012, gave a period 3.1873 and 3.18701 hours with an amplitude of 0.16 and 0.12 magnitude, respectively ({{small|U=2/2+}}).
= Satellite =
The obtained photometric observations from 2004, also revealed that Claudiomaccone is an asynchronous binary system with a minor-planet moon orbiting it every 15.11 hours. An identical orbital period is also given by Pravec. The discovery was announced in December 2005
Based on a secondary to primary mean-diameter ratio of larger than 0.31, the moon's diameter is estimated to be at least 1.24 kilometers. Its orbit around Claudiomaccone has an estimated semi-major axis of 6 kilometers.
Naming
This minor planet was named after Claudio Maccone (born 1948), an Italian SETI astronomer and space scientist at Thales Alenia Space in Turin, Italy. In his book The Sun as a Gravitational Lens: Proposed Space Missions he proposed the construction and launch of a spacecraft–antenna, called the FOCAL space mission. Outside the Solar System, at a distance of 550 AU, FOCAL could have a significantly better sensitivity detecting radio signals due to the Sun's magnifying gravitational lensing effect, as predicted by general relativity. The official naming citation was published on 2 September 2001 ({{small|M.P.C. {{MoMP|11264|43382; 54279 and *35557}}}}). In 2012, he succeed American astronomer Seth Shostak as chairman of the SETI Permanent Committee at the International Academy of Astronautics.
References
{{reflist|30em|refs=
|type = 2016-11-19 last obs.
|title = JPL Small-Body Database Browser: 11264 Claudiomaccone (1979 UC4)
|url = https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2011264
|archive-url = https://web.archive.org/web/20170413154010/https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2011264
|archive-date = 13 April 2017
|publisher = Jet Propulsion Laboratory
|access-date = 5 July 2017}}
|title = Dictionary of Minor Planet Names – (11264) Claudiomaccone, Addendum to Fifth Edition: 2003–2005
|last = Schmadel | first = Lutz D.
|publisher = Springer Berlin Heidelberg
|page = 61
|date = 2006
|isbn = 978-3-540-34361-5
|doi = 10.1007/978-3-540-34361-5_551 |chapter = (11264) Claudiomaccone [2.58, 0.23, 3.5] }}
|title = 11264 Claudiomaccone (1979 UC4)
|work = Minor Planet Center
|url = https://www.minorplanetcenter.net/db_search/show_object?object_id=11264
|access-date = 12 April 2017}}
|title = MPC/MPO/MPS Archive
|work = Minor Planet Center
|url = https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html
|access-date = 12 April 2017}}
|title = Asteroids and comets rotation curves – (11264) Claudiomaccone
|last = Behrend |first = Raoul
|publisher = Geneva Observatory
|url = http://obswww.unige.ch/~behrend/page5cou.html#011264
|access-date = 12 April 2017}}
|first1 = Robert |last1 = Johnston
|title = (11264) Claudiomaccone
|publisher = johnstonsarchive.net
|date = 21 September 2014
|url = http://www.johnstonsarchive.net/astro/astmoons/am-11264.html
|access-date = 12 April 2017}}
|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= 12 April 2017}}
|title = LCDB Data for (11264) Claudiomaccone
|publisher = Asteroid Lightcurve Database (LCDB)
|url = http://www.minorplanet.info/PHP/generateOneAsteroidInfo.php?AstInfo=11264%7CClaudiomaccone
|access-date = 12 April 2017}}
|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}}
|first1 = Yu. N. |last1 = Krugly
|first2 = C. |last2 = Maccone
|first3 = N. M. |last3 = Gaftonyuk
|first4 = D. F. |last4 = Lupishko
|first5 = V. G. |last5 = Shevchenko
|first6 = F. P. |last6 = Velichko
|date = March 2007
|title = 11 264 Claudiomaccone: Small binary main-belt asteroid
|url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2007P&SS...55..449K
|journal = Planetary and Space Science
|volume = 55
|issue = 4
|pages = 449–454
|bibcode = 2007P&SS...55..449K
|doi = 10.1016/j.pss.2006.09.006
|access-date= 12 April 2017}}
|display-authors = 6
|first1 = P. |last1 = Pravec
|first2 = P. |last2 = Scheirich
|first3 = P. |last3 = Kusnirák
|first4 = L. |last4 = Sarounová
|first5 = S. |last5 = Mottola
|first6 = G. |last6 = Hahn
|first7 = P. |last7 = Brown
|first8 = G. |last8 = Esquerdo
|first9 = N. |last9 = Kaiser
|first10 = Z. |last10 = Krzeminski
|first11 = D. P. |last11 = Pray
|first12 = B. D. |last12 = Warner
|first13 = A. W. |last13 = Harris
|first14 = M. C. |last14 = Nolan
|first15 = E. S. |last15 = Howell
|first16 = L. A. M. |last16 = Benner
|first17 = J.-L. |last17 = Margot
|first18 = A. |last18 = Galád
|first19 = W. |last19 = Holliday
|first20 = M. D. |last20 = Hicks
|first21 = Yu. N. |last21 = Krugly
|first22 = D. |last22 = Tholen
|first23 = R. |last23 = Whiteley
|first24 = F. |last24 = Marchis
|first25 = D. R. |last25 = DeGraff
|first26 = A. |last26 = Grauer
|first27 = S. |last27 = Larson
|first28 = F. P. |last28 = Velichko
|first29 = W. R. |last29 = Cooney
|first30 = R. |last30 = Stephens
|first31 = J. |last31 = Zhu
|first32 = K. |last32 = Kirsch
|first33 = R. |last33 = Dyvig
|first34 = L. |last34 = Snyder
|first35 = V. |last35 = Reddy
|first36 = S. |last36 = Moore
|first37 = S. |last37 = Gajdos
|first38 = J. |last38 = Világi
|first39 = G. |last39 = Masi
|first40 = D. |last40 = Higgins
|first41 = G. |last41 = Funkhouser
|first42 = B. |last42 = Knight
|first43 = S. |last43 = Slivan
|first44 = R. |last44 = Behrend
|first45 = M. |last45 = Grenon
|first46 = G. |last46 = Burki
|first47 = R. |last47 = Roy
|first48 = C. |last48 = Demeautis
|first49 = D. |last49 = Matter
|first50 = N. |last50 = Waelchli
|first51 = Y. |last51 = Revaz
|first52 = A. |last52 = Klotz
|first53 = M. |last53 = Rieugné
|first54 = P. |last54 = Thierry
|first55 = V. |last55 = Cotrez
|first56 = L. |last56 = Brunetto
|first57 = G. |last57 = Kober
|date = March 2006
|title = Photometric survey of binary near-Earth asteroids
|url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2006Icar..181...63P
|journal = Icarus
|volume = 181
|issue = 1
|pages = 63–93
|bibcode = 2006Icar..181...63P
|doi = 10.1016/j.icarus.2005.10.014
|access-date= 12 April 2017}}
|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= 12 April 2017}}
}}
External links
- [http://www.maccone.com/ Dr. Claudio MACCONE], homepage
- {{YouTube|id=iB6d27oLAnc|title=Claudio Maccone: Breakthrough Discuss Workshop – FOCAL Missions to 550 AU Insuring Interstellar LINKS}} {{small|(time 20:18 min.)}}, Stanford University, April 2016
- [http://www.johnstonsarchive.net/astro/asteroidmoons.html Asteroids with Satellites], Robert Johnston, johnstonsarchive.net
- [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=2017-12-16 }})
- [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/NumberedMPs010001.html Discovery Circumstances: Numbered Minor Planets (10001)-(15000)] – Minor Planet Center
- {{JPL small body|id=11264}}
{{Minor planets navigator |11263 Pesonen |number=11264 |11265 Hasselmann }}
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