1247 Memoria

Asteroid October 2019 yes 1247 Memoria #D6D6D6 M. Laugier Uccle Obs. 30 August 1932 (1247) Memoria 1932 QA1927 UL1931 JU1936 FNA905 WA m ᵻ ˈ m ɔər i əmemoria technica memoria(Latin for memory; remembrance) main-belt(outer)Themis 4 September 2017 (JD 2458000.5) 0 112.03 yr (40,920 days) 3.6792 AU 2.5851 AU 3.1321 AU 0.1747 5.54 yr (2,025 days) 130.45° 0.1778 ms / day 1.7780° 161.73° 139.43° 35.97 1.9 km38.906 0.174 km 0.078 0.0140.0846 0.009 Tholen CXFB–V 0.680U–B 0.290 10.52 1247 Memoria, provisional designation 1932 QA, is a dark Themistian asteroid from the outer regions of the asteroid belt, approximately 37 kilometers in diameter. It was discovered by Marguerite Laugier at Uccle Observatory in 1932, who later named it Memoria in memory of her pleasant stay at the discovering observatory. Discovery Memoria was discovered on 30 August 1932, by French astronomer Marguerite Laugier at the Royal Observatory of Belgium in Uccle. On the same night, it was independently discovered by Soviet astronomer Grigory Neujmin at the Simeiz Observatory on the Crimean peninsula. One week later, on 6 September 1932, it was again independently discovered by German astronomer Karl Reinmuth at Heidelberg Observatory. The Minor Planet Center only recognizes the first discoverer. Orbit and classification Memoria belongs to the Themis family (602), a very large family of typically carbonaceous asteroids, named after 24 Themis.23 It orbits the Sun in the outer main-belt at a distance of 2.6–3.7 AU once every 5 years and 6 months (2,025 days; semi-major axis of 3.13 AU). Its orbit has an eccentricity of 0.17 and an inclination of 2° with respect to the ecliptic. The asteroid was first observed as A905 WA at Heidelberg Observatory in November 1905. The body's observation arc begins as 1931 JU at Johannesburg Observatory in May 1931, or 15 months prior to its official discovery observation at Uccle. Physical characteristics In the Tholen classification, Memorias spectral type is ambiguous, closest to a carbonaceous C-type, and somewhat similar to an X- and F-type asteroid (CXF). The overall spectral type for members of the Themis family is that of a C-type.23 Rotation period As of 2018, no rotational lightcurve of Memoria has been obtained from photometric observations. The asteroid's rotation period, shape and poles remain unknown. Diameter and albedo According to the surveys carried out by the Infrared Astronomical Satellite IRAS and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Memoria measures 35.97 and 38.906 kilometers in diameter and its surface has an albedo of 0.0846 and 0.078, respectively. Naming This minor planet was named "memoria" (Latin for memory or remembrance) by the French discoverer Marguerite Laugier who remembered the pleasant relationships she had during her stay at the discovering Uccle Observatory, Belgium, in 1932. The official naming citation was mentioned in The Names of the Minor Planets by Paul Herget in 1955 (H 115). References 30em 2017-12-02 last obs. JPL Small-Body Database Browser: 1247 Memoria (1932 QA) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001247 https://web.archive.org/web/20200918035620/https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001247 dead 18 September 2020 Jet Propulsion Laboratory 3 January 2018 Schmadel Lutz D. Dictionary of Minor Planet Names Springer Berlin Heidelberg 103 2006 978-3-540-00238-3 10.1007/978-3-540-29925-7_1248 (1247) Memoria 1247 Memoria (1932 QA) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=1247 3 January 2018 6 Joseph R. Masiero T. Grav A. K. Mainzer C. R. Nugent J. M. Bauer R. Stevenson S. Sonnett August 2014 Main-belt Asteroids with WISE/NEOWISE: Near-infrared Albedos The Astrophysical Journal 791 2 11 2014ApJ...791..121M 10.1088/0004-637X/791/2/121 1406.6645 6 Joseph R. Masiero A. K. Mainzer T. Grav J. M. Bauer R. M. Cutri C. Nugent M. S. Cabrera November 2012 Preliminary Analysis of WISE/NEOWISE 3-Band Cryogenic and Post-cryogenic Observations of Main Belt Asteroids http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2012ApJ...759L...8M The Astrophysical Journal Letters 759 1 5 2012ApJ...759L...8M 10.1088/2041-8205/759/1/L8 1209.5794 3 January 2018 E. F. Tedesco P. V. Noah M. Noah S. D. Price October 2004 IRAS Minor Planet Survey V6.0 https://sbnarchive.psi.edu/pds3/iras/IRAS_A_FPA_3_RDR_IMPS_V6_0/data/diamalb.tab NASA Planetary Data System 12 IRAS-A-FPA-3-RDR-IMPS-V6.0 2004PDSS...12.....T 22 October 2019 Asteroid 1247 Memoria – Nesvorny HCM Asteroid Families V3.0 Small Bodies Data Ferret https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=1247+Memoria#Asteroid%201247%20MemoriaEAR-A-VARGBDET-5-NESVORNYFAM-V3.0 26 October 2019 https://web.archive.org/web/20201004033934/https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=1247+Memoria#Asteroid%201247%20MemoriaEAR-A-VARGBDET-5-NESVORNYFAM-V3.0 4 October 2020 dead D. Nesvorný M. Broz V. Carruba December 2014 Identification and Dynamical Properties of Asteroid Families Asteroids IV 297–321 2015aste.book..297N 10.2458/azu_uapress_9780816532131-ch016 1502.01628 9780816532131 1247 3 January 2018 External links Asteroid Lightcurve Database (LCDB), query form (info https://web.archive.org/web/20171216050541/http://www.minorplanet.info/lightcurvedatabase.html 16 December 2017 ) Dictionary of Minor Planet Names, Google books Asteroids and comets rotation curves, CdR https://web.archive.org/web/20160729213840/http://obswww.unige.ch/~behrend/page_cou.html 29 July 2016 – Observatoire de Genève, Raoul Behrend Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center 1247 1246 Chaka 1247 1248 Jugurtha 001247 Category:Discoveries by Marguerite Laugier Category:Named minor planets 001247 19320830