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--(93) Minerva, Aegis, and Gorgoneion --discovery and notes:

Primary discovered1867 Aug 24from Ann Arbor, Michigan, USAby J. C. Watson.Alternate designation(s): 1949 QN2, A902 DA.Permanent number assigned 1867.

Named 1867 for the mythological Roman goddess of wisdom.

Second component discovered2009 Aug 16 by F. Marchis and B. Macomberusingadaptive optics telescope observations from W. M. Keck II Telescope, Mauna Kea, Hawaii, USA.Announced2009 Aug 31 [M09c].Provisional designation S/2009 (93) 1.Permanent designation I Aegis, assigned 2013 Dec 17; named for the Roman mythological shield [MPC85917].

Third component discovered2009 Aug 16 by F. Marchis and B. Macomberusingadaptive optics telescope observations from W. M. Keck II Telescope, Mauna Kea, Hawaii, USA.Announced2009 Aug 31 [M09c].Provisional designation S/2009 (93) 2.Permanent designation II Gorgoneion, assigned 2013 Dec 17; named for the Roman mythological amulet [MPC85917].

Shape model published [M13c].

--Links, more technical:

• IAUC 9069.
• CBET 1986.

--Links, less technical:

--Links to ADS abstracts:

• Marchis, F., Vachier, F., Ďurech, J., Enriquez, J. E., Harris, A. W., Dalba, P. A., Berthier, J., Emery, J. P., Bouy, H., Melbourne, J., Stockton, A., Fassnacht, C. D., Dupuy, T. J., & Strajnic, J. 2013, IcarusCharacteristics and large bulk density of the C-type main-belt triple asteroid (93) Minerva
• Marchis, F., Emery, J. P., Enriquez, J. E., Descamps, P., Berthier, J., Vachier, F., & Durech, J. 2011, AGU Fall Meeting AbstractsDetailed Pictures of Multiple Asteroid Systems in the Main-Belt
• Timerson, Brad, Durech, J., Abramson, H., Brooks, J., Caton, D., Clark, D., Conard, S., Cooke, B., Dunham, D. W., Dunham, J., Edberg, S., Ellington, C., Faircloth, J., Herchak, S., Iverson, E., Jones, R., Lucas, G., Lyzenga, G., Maley, P., Martinez, L., Menke, J., Mroz, G., Nolan, P., Peterson, R., Preston, S., Rattley, G., Ray, J., Scheck, A., Stamm, J., Stanton, R., Suggs, R., Tatum, R., & Thomas, W. 2011, Minor Planet BulletinSeveral Well-observed Asteroidal Occultations in 2010
• Marchis, F., Descamps, P., Dalba, P., Enriquez, J. E., Durech, J., Emery, J. P., Berthier, J., Vachier, F., Merlbourne, J., Stockton, A. N., Fassnacht, C. D., & Dupuy, T. J. 2011, EPSC-DPS Joint Meeting 2011A Detailed Picture of the (93) Minerva Triple System
• Alton, Kevin B. 2011, Minor Planet BulletinCCD Lightcurves for 4 Main Belt Asteroids
• Marchis, Franck, Berthier, J., Burns, K. J., Descamps, P., Durech, J., Emery, J. P., Enriquez, J. E., Lainey, V., Reiss, A. E., & Vachier, F. 2010, Bulletin of the American Astronomical SocietyCharacteristics of Known Triple Asteroid Systems in the Main Belt
• Marchis, F., Descamps, P., Berthier, J., Colas, F., Melbourne, J., Stockton, A. N., Fassnacht, C. D., & Dupuy, T. J. 2009, Central Bureau Electronic TelegramsOccultations of the (93) Minerva System
• Marchis, F., Macomber, B., Berthier, J., Vachier, F., & Emery, J. P. 2009, International Astronomical Union CircularS/2009 (93) 1 and S/2009 (93) 2
• López-González, M. J. & Rodríguez, E. 2009, Revista Mexicana de Astronomia y Astrofisica Conference SeriesPhotometry of six asteroids
• Torppa, J., Hentunen, V.-P., Pääkkönen, P., Kehusmaa, P., & Muinonen, K. 2008, IcarusAsteroid shape and spin statistics from convex models
• Bus, S. & Binzel, R. P. 2004, NASA Planetary Data System93 Minerva CCD Spectrum
• Tungalag, N., Shevchenko, V. G., & Lupishko, D. F. 2002, Kinematika i Fizika Nebesnykh TelRotation parameters and shapes of 15 asteroids
• Denchev, P. 2000, Planetary and Space SciencePhotometry of 11 asteroids during their 1998 and 1999 apparitions
• Millis, R. L., Wasserman, L. H., Bowell, E., Franz, O. G., Nye, R., Osborn, W., & Klemola, A. 1985, IcarusThe occultation of AG + 29 deg 398 by 93 Minerva
• Wasserman, L. H., Millis, R. L., Bowell, E., Franz, O. G., & Osborn, W. 1983, Bulletin of the American Astronomical SocietyThe Occultation Diameters of 375 Ursula and 93 Minerva
• Sicardy, B., Laques, P., Lecacheux, J., Vedere, J. J., Le Borgne, J. F., Baroni, S., Cavagna, M., & Gualdoni, C. 1982, International Astronomical Union CircularOccultation of BD +29 579 by (93) Minerva
• Debehogne, H., Lagerkvist, C.-I., & Zappala, V. 1982, Astronomy and Astrophysics Supplement SeriesPhysical studies of asteroids. VIII - Photoelectric photometry of the asteroids 42, 48, 93, 105, 145 and 245
• Lagerkvist, C.-I. 1981, Astronomy and Astrophysics Supplement SeriesPhysical studies of asteroids II - Photoelectric observations of the asteroids 63, 93, 135 and 409
• 1978, The AstronomerAsteroidal notes
• 1977, The AstronomerAsteroid notes
• Millosevich, Elia 1902, Astronomische NachrichtenBeobachtungen des Planeten 1902 HQ = (93) Minerva
• Eichelberger, W. S. 1897, The Astronomical JournalEphemeris of asteroid (93) Minerva

©2009, 2014by Wm. Robert Johnston.
Last modified21 September 2014.
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