1150 Achaia

Main-belt asteroid October 2019 yes 1150 Achaia #D6D6D6 File:001150-asteroid shape model (1150) Achaia.png Shape model of Achaia from its lightcurve 2 September 1929 K. Reinmuth Heidelberg Obs. (1150) Achaia 1929 RB1955 SZ 1 ə ˈ k aɪ ə,Achaia ə ˈ k eɪ əAchaia Achaea (Greek region) main-belt(inner) background 16 February 2017 (JD 2457800.5) 0 86.78 yr (31,696 days) 2.6392 AU 1.7424 AU 2.1908 AU 0.2047 3.24 yr (1,184 days) 348.01° 0.3039 ms / day 2.3929° 206.54° 139.58° 0.7366 AU 7.689 0.020 km7.82 km (calculated)7.928 0.036 km7.96 0.25 km8.16 0.25 km 60.99 0.05 hLCDB-Pravec-2007 (5.0°, −65.0°) (λ1/β1) (20.0°, −69.0°) (λ2/β2) 0.2343 0.04790.239 0.0170.24 (assumed)0.242 0.0290.251 0.017 S (S3OS2-TH) Sl (S3OS2-BB) 12.6012.7 1150 Achaia (ə ˈ k aɪ ə); prov. designation: 1929 RB) is a stony background asteroid from the inner regions of the asteroid belt. It was discovered by Karl Reinmuth at Heidelberg Observatory on 2 September 1929. The S-type asteroid has a notably long rotation period of hours 61 hours and measures approximately 7.8 km mi off us in diameter. It is named for the Greek region of Achaia. Discovery Achaia was discovered on 2 September 1929, by German astronomer Karl Reinmuth at Heidelberg Observatory in southwest Germany. Ten nights later, it was independently discovered by Friedrich Schwassmann and Arno Wachmann at Bergedorf. The body's observation arc begins at Heidelberg, five days after its first and official discovery observation. Orbit and classification Located in the orbital region of the Flora family, one of the largest, yet disputed families of the main-belt, Achaia is a non-family asteroid of the main belt's background population when applying the hierarchical clustering method to its proper orbital elements. It orbits the Sun at a distance of 1.7–2.6 AU once every 3 years and 3 months (1,184 days). Its orbit has an eccentricity of 0.20 and an inclination of 2° with respect to the ecliptic. Naming This minor planet is named for the region Achaea (or "Achaia") in Western Greece. It is located in the northern part of the Peloponnese peninsula and borders on the gulfs of Patras and Corinth. Naming citation was first mentioned in The Names of the Minor Planets by Paul Herget in 1955 (H 107). Physical characteristics In the Tholen-like taxonomy of the Small Solar System Objects Spectroscopic Survey (S3OS2), Achaia is a common, stony S-type asteroid, while in the survey's SMASS (Bus–Binzel)-like taxonomic variant, it is an Sl-subtype, which transitions from the S-type to the uncommon L-type asteroid. Photometry A rotational lightcurve of Achaia was obtained from photometric observations by Czech astronomer Petr Pravec at Ondřejov Observatory in October 2007.Lightcurve-Plot It gave a well-defined rotation period of 60.99 hours with a brightness variation of 0.72 magnitude (U=3).LCDB-Pravec-2007 Published in 2016, two additional lightcurves were derived from modeled photometric data using various sources. They gave a sidereal rotation period of 61.071 0.001 and 61.072 0.005 hours, as well as a spin axis of (5.0°, −65.0°) and (20.0°, −69.0°) in ecliptic coordinates, respectively. While not being a slow rotator, Achaia has a notably longer period than the vast majority of asteroids, which typically rotate every 2 to 20 hours once around their axis. Also, the body's changes in brightness are relatively high and indicate that it has a non-spheroidal shape. Diameter and albedo According to the surveys carried out by the Japanese Akari satellite and NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Achaia measures between 7.689 and 8.16 kilometers in diameter, and its surface has an albedo between 0.234 and 0.251. The Collaborative Asteroid Lightcurve Link assumes an albedo of 0.24 – taken from 8 Flora, the Flora family's principal body and namesake – and calculates a diameter of 7.82 kilometers based on an absolute magnitude of 12.7. Notes LCDB-Pravec-2007 Pravec (2007) web: rotation period 60.99 0.05 hours with a brightness amplitude of 0.72 mag. Quality code of 3. Summary figures at http://www.minorplanet.info/PHP/generateOneAsteroidInfo.php?AstInfo=1150 Collaborative Asteroid Lightcurve Link (CALL) for (1150) Achaia and http://www.asu.cas.cz/~ppravec/neo.htm Pravec, P.; Wolf, M.; Sarounova, L. (2007) Lightcurve-Plot (1150) Achaia: http://www.asu.cas.cz/~asteroid/01150.png Lightcurve Plot analysis on 23 October 2007 by Pravec and Galad. ProjectID: Modra, Kharkiv. Comment: Error of 0.02 h is formal, real error perhaps a couple times greater. References 30em 2016-06-13 last obs. JPL Small-Body Database Browser: 1150 Achaia (1929 RB) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001150 Jet Propulsion Laboratory 2 February 2017 Dictionary of Minor Planet Names https://archive.org/details/dictionaryminorp00schm limited Schmadel Lutz D. Springer Berlin Heidelberg (1150) Achaia 97 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_1151 1150 Achaia (1929 RB) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=1150 2 February 2017 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 http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2014ApJ...791..121M The Astrophysical Journal 791 2 11 2014ApJ...791..121M 10.1088/0004-637X/791/2/121 1406.6645 2 February 2017 1150 2 February 2017 6 Fumihiko Usui Daisuke Kuroda Thomas G. Müller Sunao Hasegawa Masateru Ishiguro Takafumi Ootsubo Daisuke Ishihara Hirokazu Kataza Satoshi Takita Shinki Oyabu Munetaka Ueno Hideo Matsuhara Takashi Onaka October 2011 Asteroid Catalog Using Akari: AKARI/IRC Mid-Infrared Asteroid Survey Publications of the Astronomical Society of Japan 63 5 1117–1138 2011PASJ...63.1117U 10.1093/pasj/63.5.1117 (online, AcuA catalog p. 153) 6 A. Mainzer T. Grav J. Masiero E. Hand J. Bauer D. Tholen R. S. McMillan T. Spahr R. M. Cutri E. Wright J. Watkins W. Mo C. Maleszewski November 2011 NEOWISE Studies of Spectrophotometrically Classified Asteroids: Preliminary Results The Astrophysical Journal 741 2 25 2011ApJ...741...90M 10.1088/0004-637X/741/2/90 1109.6407 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 2 February 2017 6 Hanuš J. Ďurech J. Oszkiewicz D. A. Behrend R. Carry B. Delbo M. Adam O. Afonina V. Anquetin R. Antonini P. Arnold L. Audejean M. Aurard P. Bachschmidt M. Baduel B. Barbotin E. Barroy P. Baudouin P. Berard L. Berger N. Bernasconi L. Bosch J. -G. Bouley S. Bozhinova I. Brinsfield J. Brunetto L. Canaud G. Caron J. Carrier F. Casalnuovo G. Casulli S. Cerda M. Chalamet L. Charbonnel S. 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Peyrot A. Pilcher F. Pirenne J. -F. Piron P. Polińska M. Polotto M. Poncy R. Previt J. P. Reignier F. Renauld D. Ricci D. Richard F. Rinner C. Risoldi V. Robilliard D. Romeuf D. Rousseau G. Roy R. Ruthroff J. Salom P. A. Salvador L. Sanchez S. Santana-Ros T. Scholz A. Séné G. Skiff B. Sobkowiak K. Sogorb P. Soldán F. Spiridakis A. Splanska E. Sposetti S. Starkey D. Stephens R. Stiepen A. Stoss R. Strajnic J. Teng J. -P. Tumolo G. Vagnozzi A. Vanoutryve B. Vugnon J. M. Warner B. D. Waucomont M. Wertz O. Winiarski M. Wolf M. February 2016 New and updated convex shape models of asteroids based on optical data from a large collaboration network Astronomy and Astrophysics 586 A108 2016A&A...586A.108H 0004-6361 10.1051/0004-6361/201527441 1510.07422 J. Durech J. Hanus D. Oszkiewicz R. Vanco March 2016 Asteroid models from the Lowell photometric database http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2016A&A...587A..48D Astronomy and Astrophysics 587 6 2016A&A...587A..48D 10.1051/0004-6361/201527573 1601.02909 2 February 2017 Asteroid 1150 Achaia Small Bodies Data Ferret https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=1150+Achaia 14 March 2020 October 2026 InternetArchiveBot Asteroid 1150 Achaia – Proper Elements AstDyS-2, Asteroids – Dynamic Site https://newton.spacedys.com/astdys/index.php?pc=1.1.6&n=1150 14 March 2020 D. Lazzaro C. A. Angeli J. M. Carvano T. Mothé-Diniz R. Duffard M. Florczak November 2004 S3OS2: the visible spectroscopic survey of 820 asteroids http://sirrah.troja.mff.cuni.cz/yarko-site/tmp/eos/NEW/spectral_type_figure/s3os2.pdf Icarus 172 1 179–220 2004Icar..172..179L 10.1016/j.icarus.2004.06.006 14 March 2020 External links Lightcurve Database Query (LCDB), at www.minorplanet.info 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 – Geneva Observatory, Raoul Behrend Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center 1150 1149 Volga 1150 1151 Ithaka 001150 Category:Discoveries by Karl Wilhelm Reinmuth Category:Named minor planets 19290902