1145 Robelmonte

{{Short description|Main-belt asteroid}} {{Use dmy dates|date=July 2018}} {{Infobox planet | minorplanet = yes | name = 1145 Robelmonte | background = #D6D6D6 | image = | image_size = | caption = | discovery_ref = <ref name="jpldata" /> | discoverer = E. Delporte | discovery_site = Uccle Obs. | discovered = 3 February 1929 | mpc_name = (1145) Robelmonte | alt_names = 1929 CC{{·}}A915 RN | pronounced = | named_after = Robelmont<ref name="springer" /> {{small|(birthplace of Sylvain Arend)}} | mp_category = main-belt{{·}}Vestian<ref name="lcdb" /><ref name="Ferret" /> | orbit_ref = <ref name="jpldata" /> | epoch = 4 September 2017 (JD 2458000.5) | uncertainty = 0 | observation_arc = 86.87 yr (31,730 days) | aphelion = 2.7112 AU | perihelion = 2.1363 AU | semimajor = 2.4238 AU | eccentricity = 0.1186 | period = 3.77 yr (1,378 days) | mean_anomaly = 68.012° | mean_motion = {{Deg2DMS|0.2612|sup=ms}} / day | inclination = 6.2071° | asc_node = 346.82° | arg_peri = 267.51° | dimensions = {{val|18.85|5.08}} km<ref name="Nugent-2015" /> {{val|19.13|5.00}} km<ref name="Nugent-2016" /> {{val|22.23|0.39}} km<ref name="Masiero-2012" /> 23.16 km {{small|(derived)}}<ref name="lcdb" /> {{val|24.029|0.129}} km<ref name="Masiero-2012" /> {{val|24.07|0.37}} km<ref name="AKARI" /> {{val|24.757|0.541}} km<ref name="WISE" /> | rotation = {{val|7.582|0.0027}} h<ref name="Waszczak-2015" /> {{val|8.002|0.002}} h<ref name="Mansego-2016" /> {{val|9.01|0.01}} h<ref name="Gartrelle-2012" /> {{val|21|}} h<ref name="geneva-obs" /> | albedo = 0.0994 {{small|(derived)}}<ref name="lcdb" /> {{val|0.1046|0.0175}}<ref name="WISE" /> {{val|0.108|0.020}}<ref name="Masiero-2012" /> {{val|0.113|0.004}}<ref name="AKARI" /> {{val|0.128|0.006}}<ref name="Masiero-2014" /> {{val|0.15|0.09}}<ref name="Nugent-2016" /> {{val|0.16|0.08}}<ref name="Nugent-2015" /> | spectral_type = S<ref name="lcdb" /> | abs_magnitude = 11.10<ref name="AKARI" /><ref name="WISE" />{{·}}{{val|11.157|0.001}} {{small|(R)}}<ref name="Waszczak-2015" />{{·}}11.30<ref name="lcdb" /><ref name="Nugent-2015" /><ref name="Masiero-2012" />{{·}}{{val|11.37|0.27}}<ref name="Veres-2015" />{{·}}11.4<ref name="jpldata" />{{·}}11.44<ref name="Nugent-2016" /> }}

'''1145 Robelmonte''', provisional designation {{mp|1929 CC}}, is a Vestian asteroid from the inner regions of the asteroid belt, approximately 23 kilometers in diameter.

It was discovered on 3 February 1929, by Belgian astronomer Eugène Delporte at the Royal Observatory of Belgium in Uccle.<ref name="MPC-object" /> Through a glitch in the naming process, the asteroid received the name "Robelmonte" instead of "Mimi" as originally intended by the discoverer.<ref name="springer" />

== Orbit and classification ==

''Robelmonte'' is a member of the Vesta family ({{small|401}}),<ref name="lcdb" /><ref name="Ferret" /> the main-belt's second-largest asteroid family by number of members.<ref name="Nesvorny-2014" />{{rp|23}} Vestian asteroids have a composition akin to the HED meteorites and are thought to have originated deep within 4 Vesta's crust, possibly from Rheasilvia, a large impact crater on its southern hemisphere near the South pole, formed as a result of a subcatastrophic collision.<ref name="Kelley-2003" /> Vesta is the main belt's second-largest and second-most-massive body after Ceres.

''Robelmonte'' orbits the Sun in the inner main-belt at a distance of 2.1–2.7 AU once every 3 years and 9 months (1,378 days). Its orbit has an eccentricity of 0.12 and an inclination of 6° with respect to the ecliptic.<ref name="jpldata" /> The asteroid was first identified as {{mp|A915 RN}} at Simeiz Observatory in September 1915. Its observation arc begins at Algiers Observatory in August 1930, more than a year after its official discovery observation at Uccle.<ref name="MPC-object" />

== Physical characteristics ==

''Robelmonte'' is an assumed stony S-type asteroid,<ref name="lcdb" /> despite its relatively low albedo.

=== Rotation period ===

In March 2016, the best-rated rotational lightcurve of ''Robelmonte'' was obtained from photometric observations by the Spanish amateur astronomer group OBAS (Observadores de Asteroides – Asteroid Observers). Lightcurve analysis gave a rotation period of 8.002 hours with a brightness variation of 0.13 magnitude ({{small|U=3-}}).<ref name="Mansego-2016" /> Previous observations gave a divergent period of 7.582, 9.01 and 21 hours, respectively ({{small|U=2/2/1}}).<ref name="Waszczak-2015" /><ref name="Gartrelle-2012" /><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, ''Robelmonte'' measures between 18.85 and 24.757 kilometers in diameter and its surface has an albedo between 0.1046 and 0.16.<ref name="Nugent-2015" /><ref name="Nugent-2016" /><ref name="Masiero-2012" /><ref name="AKARI" /><ref name="WISE" /><ref name="Masiero-2014" />

The ''Collaborative Asteroid Lightcurve Link'' derives a low albedo of 0.0994 and a diameter of 23.16 kilometers based on an absolute magnitude of 11.3.<ref name="lcdb" />

== Naming ==

This minor planet was named after Robelmont, the birthplace of Belgian astronomer Sylvain Arend (Robelmonte is the feminine form). Through an error, the names intended for 1127 Mimi (wife of Delporte) and 1145 Robelmonte (birthplace of Arend) had been switched, and each name had been proposed by the discoverer of the other asteroid. The official naming citation was mentioned in ''The Names of the Minor Planets'' by Paul Herget in 1955 ({{small|H 107}}).<ref name="springer" />

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

<ref name="jpldata">{{cite web |type = 2017-07-05 last obs. |title = JPL Small-Body Database Browser: 1145 Robelmonte (1929 CC) |url = https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001145 |publisher = Jet Propulsion Laboratory |accessdate = 8 September 2017}}</ref>

<ref name="springer">{{cite book |last = Schmadel | first = Lutz D. |title = Dictionary of Minor Planet Names |publisher = Springer Berlin Heidelberg |page = 97 |date = 2007 |isbn = 978-3-540-00238-3 |doi = 10.1007/978-3-540-29925-7_1146 |chapter = (1145) Robelmonte }}</ref>

<ref name="MPC-object">{{cite web |title = 1145 Robelmonte (1929 CC) |work = Minor Planet Center |url = https://www.minorplanetcenter.net/db_search/show_object?object_id=1145 |accessdate = 8 September 2017}}</ref>

<ref name="geneva-obs">{{cite web |title = Asteroids and comets rotation curves – (1145) Robelmonte |last = Behrend |first = Raoul |publisher = Geneva Observatory |url = http://obswww.unige.ch/~behrend/page3cou.html#001145 |accessdate = 8 September 2017}}</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= 8 September 2017}}</ref>

<ref name="lcdb">{{cite LCDB|number = 1145 |accessdate = 8 September 2017}}</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= 8 September 2017}}</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 |access-date= 8 September 2017}}</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="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= }} ([http://vizier.cfa.harvard.edu/viz-bin/VizieR-5?-source=J/PASJ/63/1117/acua_v1&Num=1145 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}}</ref>

<ref name="Gartrelle-2012">{{Cite journal |author = Gartrelle, Gordon M. |date = April 2012 |title = Lightcurve Results for Eleven Asteroids |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2012MPBu...39...40G |journal = The Minor Planet Bulletin |volume = 39 |issue = 2 |pages = 40%–46 |issn = 1052-8091 |bibcode = 2012MPBu...39...40G |access-date= 8 September 2017}}</ref>

<ref name="Waszczak-2015">{{cite journal |display-authors = 6 |first1 = Adam |last1 = Waszczak |first2 = Chan-Kao |last2 = Chang |first3 = Eran O. |last3 = Ofek |first4 = Russ |last4 = Laher |first5 = Frank |last5 = Masci |first6 = David |last6 = Levitan |first7 = Jason |last7 = Surace |first8 = Yu-Chi |last8 = Cheng |first9 = Wing-Huen |last9 = Ip |first10 = Daisuke |last10 = Kinoshita |first11 = George |last11 = Helou |first12 = Thomas A. |last12 = Prince |first13 = Shrinivas |last13 = Kulkarni |date = September 2015 |title = Asteroid Light Curves from the Palomar Transient Factory Survey: Rotation Periods and Phase Functions from Sparse Photometry |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2015AJ....150...75W |journal = The Astronomical Journal |volume = 150 |issue = 3 |page = 35 |bibcode = 2015AJ....150...75W |doi = 10.1088/0004-6256/150/3/75 |arxiv = 1504.04041 |access-date= 8 September 2017}}</ref>

<ref name="Mansego-2016">{{Cite journal |display-authors = 6 |first1 = Enrique Arce |last1 = Mansego |first2 = Pedro Brines |last2 = Rodriguez |first3 = Juan Lozano |last3 = de Haro |first4 = Onofre Rodrigo |last4 = Chiner |first5 = Alvaro Fornas |last5 = Silva |first6 = David Herrero |last6 = Porta |first7 = Vicente Mas |last7 = Martinez |first8 = Gonzalo Fornas |last8 = Silva |first9 = Alfonso Carreno |last9 = Garceran |date = October 2016 |title = Eighteen Asteroids Lightcurves at Asteroides Observers (OBAS) - MPPD: 2016 March–May |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2016MPBu...43..332M |journal = The Minor Planet Bulletin |volume = 43 |issue = 4 |pages = 332–336 |issn = 1052-8091 |bibcode = 2016MPBu...43..332M |access-date= 8 September 2017}}</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= 8 September 2017}}</ref>

<ref name="Ferret">{{cite web |title = Asteroid 1145 Robelmonte – Nesvorny HCM Asteroid Families V3.0 |work = Small Bodies Data Ferret |url = https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=1145+Robelmonte#Asteroid%201145%20RobelmonteEAR-A-VARGBDET-5-NESVORNYFAM-V3.0 |accessdate = 26 October 2019}}</ref>

<ref name="Nesvorny-2014">{{Cite book |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 = 9780816532131}}</ref>

<ref name="Kelley-2003">{{cite journal |first1 = Michael S. |last1 = Kelley |first2 = Faith |last2 = Vilas |first3 = Michael J. |last3 = Gaffey |first4 = Paul A. |last4 = Abell |date = September 2003 |title = Quantified mineralogical evidence for a common origin of 1929 Kollaa with 4 Vesta and the HED meteorites |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2003Icar..165..215K |journal = Icarus |volume = 165 |issue = 1 |pages = 215–218 |bibcode = 2003Icar..165..215K |doi = 10.1016/S0019-1035(03)00149-0 |accessdate = 8 September 2017}}</ref>

}}

== 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|1145}} * {{JPL small body}}

{{DEFAULTSORT:Robelmonte}} 001145 Category:Discoveries by Eugène Joseph Delporte Category:Named minor planets 19290203