Main-belt asteroid binary
702 Alauda /ə ˈ l ɔː d ə 1910 KQ , is a carbonaceousasteroid andbinary system from the outerasteroid belt , approximately 190 kilometers in diameter.[ 2] parent body of theAlauda family . Discovered on 16 July 1910 by German astronomerJoseph Helffrich atHeidelberg Observatory , it was named after thelark (alauda ).[ 3] [ 6] moon , namedPichi üñëm , was discovered in 2007.[ 10] [ 21]
Alauda's satellitePichi üñëm , provisionally known asS/2007 (702) 1 , was discovered on 26 July 2007 from observations usingadaptive-optics imaging with theEuropean Southern Observatory (ESO) 8-mVery Large Telescope (VLT) on Cerro Paranal, Chile.[ 10] albedo as the primary) and orbits Alauda in a nearly circular orbit at a distance of226 .5± 24 km[ 19] [ 21] [ 22] Pichi üñëm (Mapudungun: [ˈpɪtʃi approximately /ˈ p ɪ tʃ i ɪ ˈ n j ʌ m Mapuche language ofChile , the country from which the moon was discovered.[ 23]
Orbital characteristics [ edit ] Alauda has been identified as the largest member of theAlauda family , adynamical family of bright carbonaceous asteroids with more than a thousand known members.[ 24] : 23 581 Tauntonia ,1101 Clematis ,1838 Ursa ,3139 Shantou ,3325 TARDIS ,4368 Pillmore ,5360 Rozhdestvenskij ,5815 Shinsengumi , and many others.[ 25] asteroid family .[ 10]
Physical characteristics [ edit ] The discovery and tracking of Alauda's moon enabled Alauda'smass to be determined. The discoverers of the moon, Patricio Rojo andJean-Luc Margot , estimated Alauda's mass to be± 0.36)× 1018 kg± 0.5 g/cm3 [ 19]
Alauda has been observed tooccult stars on several occasions, providing important information on its size and shape. It produced occultations on 2001-07-12 and 2004-04-21.[ 26] apparent magnitude 9.5 star in the constellation ofGemini on 2009-10-17 at 08:18 UT.[ 1] [ 1]
^a b c Steve Preston."(702) Alauda / TYC 1920-00620-1 event on 2009 Oct 17, 08:18 UT" . Asteroid Occultation Updates. Retrieved5 October 2009 . [permanent dead link ^a b c d e f g "JPL Small-Body Database Browser: 702 Alauda (1910 KQ)" (2017-06-05 last obs.).Jet Propulsion Laboratory . Retrieved6 November 2017 .^a b "702 Alauda (1910 KQ)" .Minor Planet Center . Retrieved6 November 2017 .^ "Alauda" .Merriam-Webster.com Dictionary ^ 'Alaude' in Noah Webster (1884)A Practical Dictionary of the English Language ^a b Schmadel, Lutz D. (2007). "(702) Alauda".Dictionary of Minor Planet Names . Springer Berlin Heidelberg. p. 68.doi :10.1007/978-3-540-29925-7_703 .ISBN 978-3-540-00238-3 ^a b "LCDB Data for (702) Alauda" . Asteroid Lightcurve Database (LCDB). Retrieved6 November 2017 .^ "Asteroid 702 Alauda – Nesvorny HCM Asteroid Families V3.0" .Small Bodies Data Ferret . Retrieved24 October 2019 .^ Johnston, Robert (21 September 2014)."(702) Alauda" . johnstonsarchive.net. Retrieved6 November 2017 . ^a b c d Margot, Jean-Luc; Rojo, P. (October 2007)."Discovery of a Satellite to Asteroid Family Member (702) Alauda" .American Astronomical Society .39 : 440.Bibcode :2007DPS....39.1608M . Retrieved27 February 2018 . ^ Nugent, C. R.; Mainzer, A.; Masiero, J.; Bauer, J.; Cutri, R. M.; Grav, T.; et al. (December 2015)."NEOWISE Reactivation Mission Year One: Preliminary Asteroid Diameters and Albedos" .The Astrophysical Journal .814 (2): 13.arXiv :1509.02522 Bibcode :2015ApJ...814..117N .doi :10.1088/0004-637X/814/2/117 .S2CID 9341381 . Retrieved6 November 2017 . ^ Nugent, C. R.; Mainzer, A.; Bauer, J.; Cutri, R. M.; Kramer, E. A.; Grav, T.; et al. (September 2016)."NEOWISE Reactivation Mission Year Two: Asteroid Diameters and Albedos" .The Astronomical Journal .152 (3): 12.arXiv :1606.08923 Bibcode :2016AJ....152...63N .doi :10.3847/0004-6256/152/3/63 S2CID 119289027 . ^ Marchis, F.; Kaasalainen, M.; Hom, E. F. Y.; Berthier, J.; Enriquez, J.; Hestroffer, D.; et al. (November 2006)."Shape, size and multiplicity of main-belt asteroids. I. Keck Adaptive Optics survey" .Icarus .185 (1):39– 63.Bibcode :2006Icar..185...39M .doi :10.1016/j.icarus.2006.06.001 .PMC 2600456 PMID 19081813 . ^ Usui, Fumihiko; Kuroda, Daisuke; Müller, Thomas G.; Hasegawa, Sunao; Ishiguro, Masateru; Ootsubo, Takafumi; et al. (October 2011)."Asteroid Catalog Using Akari: AKARI/IRC Mid-Infrared Asteroid Survey" .Publications of the Astronomical Society of Japan .63 (5):1117– 1138.Bibcode :2011PASJ...63.1117U .doi :10.1093/pasj/63.5.1117 . Retrieved17 October 2019 . online ,AcuA catalog p. 153 )^ Masiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; Nugent, C.; et al. (November 2012)."Preliminary Analysis of WISE/NEOWISE 3-Band Cryogenic and Post-cryogenic Observations of Main Belt Asteroids" .The Astrophysical Journal Letters .759 (1): 5.arXiv :1209.5794 Bibcode :2012ApJ...759L...8M .doi :10.1088/2041-8205/759/1/L8 .S2CID 46350317 . Retrieved6 November 2017 . ^ Tedesco, E. F.; Noah, P. V.; Noah, M.; Price, S. D. (October 2004)."IRAS Minor Planet Survey V6.0" .NASA Planetary Data System .12 : IRAS-A-FPA-3-RDR-IMPS-V6.0.Bibcode :2004PDSS...12.....T . Retrieved22 October 2019 . ^ Mainzer, A.; Grav, T.; Masiero, J.; Hand, E.; Bauer, J.; Tholen, D.; et al. (November 2011). "NEOWISE Studies of Spectrophotometrically Classified Asteroids: Preliminary Results".The Astrophysical Journal .741 (2): 25.arXiv :1109.6407 Bibcode :2011ApJ...741...90M .doi :10.1088/0004-637X/741/2/90 .S2CID 118700974 . ^ Alí-Lagoa, V.; de León, J.; Licandro, J.; Delbó, M.; Campins, H.; Pinilla-Alonso, N.; et al. (June 2013)."Physical properties of B-type asteroids from WISE data" .Astronomy and Astrophysics .554 : 16.arXiv :1303.5487 Bibcode :2013A&A...554A..71A .doi :10.1051/0004-6361/201220680 .S2CID 119214002 . Retrieved6 November 2017 . ^a b c d Rojo, P.; Margot, J. L. (February 2011). "Mass and Density of the B-type Asteroid (702) Alauda".The Astrophysical Journal .727 (2): 5.arXiv :1011.6577 Bibcode :2011ApJ...727...69R .doi :10.1088/0004-637X/727/2/69 .S2CID 59449907 . ^ Magnitudes generated with JPL Horizons for the year 1950 through 2100 ^a b P. Rojo and J.L. Margot (2 August 2007)."Electronic Telegram No. 1016: S/2007 (702) 1" . IAU Central Bureau for Astronomical Telegrams. Retrieved5 July 2011 . ^ "Asteroid and Dwarf Planet News" . Retrieved6 October 2009 .^ "New Names of Minor Planets" (PDF) .(2.19 MB) ^ Nesvorný, D.; Broz, M.; Carruba, V. (December 2014). "Identification and Dynamical Properties of Asteroid Families".Asteroids IV . pp. 297– 321.arXiv :1502.01628 Bibcode :2015aste.book..297N .doi :10.2458/azu_uapress_9780816532131-ch016 .ISBN 9780816532131 S2CID 119280014 . ^ "Opposition dates and magnitudes for 702 family members (2004–2008)" . Italian organization of minor planet observers. Archived fromthe original on 7 February 2012. Retrieved5 October 2009 .^ David Dunham."Observed asteroidal occultation list" . Retrieved27 January 2011 .
