10208 Germanicus

Stony Florian asteroid and binary system from the inner regions of the asteroid belt October 2019 yes 10208 Germanicus #D6D6D6 30 August 1997 A. Vagnozzi Santa Lucia Obs. (10208) Germanicus 1997 QN 11987 QJ 71994 WP 12 dʒ ər ˈ m æ n ᵻ k ə sNoah Webster (1884) A Practical Dictionary of the English Language Germanicus(Ancient Roman general) main-beltFlora 4 September 2017 (JD 2458000.5) 0 28.69 yr (10,478 days) 2.6849 AU 1.7860 AU 2.2354 AU 0.2011 3.34 yr (1,221 days) 351.10° 0.2949 ms / day 4.5619° 223.63° 115.01° 1CBET-1716 2.87 0.62 km3.50 km (taken)3.503 km3.552 0.202 km 3.1291 0.0002 h3.3484 0.0001 h3.3493 0.0006 hLCDB-Pravec-2007 0.17470.267 0.0270.36 0.19 S 14.2 0.2 (R)14.314.4014.514.79 0.139 10208 Germanicus, provisional designation 1997 QN 1, is a stony Florian asteroid and binary system from the inner regions of the asteroid belt, approximately 3.5 kilometers in diameter. It was discovered on 30 August 1997, by Italian amateur astronomer Antonio Vagnozzi at the Santa Lucia Stroncone Astronomical Observatory in Stroncone, Italy, and named for ancient Roman general Germanicus. The asteroid's minor-planet moon was discovered in 2007. Orbit and classification Germanicus is a member of the Flora family, one of the largest families of stony asteroids. It orbits the Sun in the inner main-belt at a distance of 1.8–2.7 AU once every 3 years and 4 months (1,221 days). Its orbit has an eccentricity of 0.20 and an inclination of 5° with respect to the ecliptic. It was first observed at Crimea–Nauchnij and Brorfelde Observatory in August 1987, extending the body's observation arc by 10 years prior to its official discovery observation at Stroncone. Diameter and albedo According to the survey carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Germanicus measures 2.87 and 3.552 kilometers in diameter and its surface has an albedo of 0.36 and 0.267, respectively. The Collaborative Asteroid Lightcurve Link adopts Petr Pravec's revised WISE-data, that is, an albedo of 0.1747 and a diameter of 3.50 kilometers with an absolute magnitude of 14.79. Lightcurve and satellite In August 2007, a rotational lightcurve of Germanicus was obtained from photometric observations by an international group of astronomers. Lightcurve analysis gave a rotation period of 3.1291 hours with a brightness variation of 0.13 magnitude (U=n.a.). It was also revealed that Germanicus is orbited by a minor-planet moon every 58.55 hours. The system has a high secondary-to-primary mean-diameter ratio of 0.46.CBET-1716 This translates into a satellite diameter of 1.48 kilometers (based on a primary-diameter of 3.23 kilometers). Naming This minor planet was named for the ancient Roman general and poet Germanicus (15 BC – AD 19), who led several successful campaigns into Germania. Germanicus was also the nephew and designated heir of the Roman Emperor Tiberius. As a poet, he wrote "Aratea", an astronomical treatise, which illustrated copy is known as the Leiden Aratea. The approved naming citation was published by the Minor Planet Center on 27 May 2010 (M.P.C. 70407). Notes LCDB-Pravec-2007 Pravec (2007) web: rotation period 3.3493 0.0006 hours with a brightness amplitude of 0.12 mag. Summary figures at Collaborative Asteroid Lightcurve Link (CALL) for (10208) Germanicus CBET-1716 CBET No. 1087, 25 September 2007 – Central Bureau for Astronomical Telegrams for (10208) Germanicus:Photometric observations obtained between 6 August and 18 September 2007, show that 10208 Germanicus is a binary system with an orbital period of 58.55 0.02 hours. The primary has a period of 3.3484 0.0001 hours, and it has a lightcurve brightness variation of 0.13 magnitude. Mutual eclipse/occultation events with a depth 0.21 magnitude suggest a secondary-to-primary mean-diameter ratio of 0.46 0.02.Central Bureau for Astronomical Telegrams No. 1716Julian Oey, Leura Observatory, Australia; Petr Pravec and Peter Kusnirak, Ondrejov Observatory; Yu. Krugly and Vasilij Chiorny, Kharkiv Observatory, Ukraine; and John. Ries, McDonald Observatory References 30em 2016-05-03 last obs. JPL Small-Body Database Browser: 10208 Germanicus (1997 QN1) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2010208 Jet Propulsion Laboratory 5 July 2017 10208 Germanicus (1997 QN1) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=10208 31 March 2017 MPC/MPO/MPS Archive Minor Planet Center https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html 31 March 2017 Johnston Robert (10208) Germanicus johnstonsarchive.net 21 September 2014 http://www.johnstonsarchive.net/astro/astmoons/am-10208.html 31 March 2017 10208 31 March 2017 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 Petr Pravec Alan W. Harris Peter Kusnirák Adrián Galád Kamil Hornoch September 2012 Absolute magnitudes of asteroids and a revision of asteroid albedo estimates from WISE thermal observations Icarus 221 1 365–387 2012Icar..221..365P 10.1016/j.icarus.2012.07.026 6 C. R. Nugent A. Mainzer J. Masiero J. Bauer R. M. Cutri T. Grav E. Kramer S. Sonnett R. Stevenson E. L. Wright December 2015 NEOWISE Reactivation Mission Year One: Preliminary Asteroid Diameters and Albedos The Astrophysical Journal 814 2 13 2015ApJ...814..117N 10.1088/0004-637X/814/2/117 1509.02522 J. Oey P. Pravec P. Kusnirak Yu. Krugly V. Chiorny J. Ries September 2007 (10208) 1997 QN1 Central Bureau Electronic Telegrams 1087 1 2007CBET.1087....1O Oey, Julian January 2016 Lightcurve Analysis of Asteroids from Blue Mountains Observatory in 2014 The Minor Planet Bulletin 43 1 45–51 1052-8091 2016MPBu...43...45O 6 Joseph R. Masiero A. K. Mainzer T. Grav J. M. Bauer R. M. Cutri J. Dailey P. R. M. Eisenhardt R. S. McMillan T. B. Spahr M. F. Skrutskie D. Tholen R. G. Walker E. L. Wright E. DeBaun D. Elsbury T. IV Gautier S. Gomillion A. Wilkins November 2011 Main Belt Asteroids with WISE/NEOWISE. I. Preliminary Albedos and Diameters The Astrophysical Journal 741 2 20 2011ApJ...741...68M 10.1088/0004-637X/741/2/68 1109.4096 External links Asteroids with Satellites, Robert Johnston, johnstonsarchive.net 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 (10001)-(15000) – Minor Planet Center 10208 10207 Comeniana 10208 10209 Izanaki 010208 010208 Category:Discoveries by Antonio Vagnozzi Category:Named minor planets 010208 19970830 Category:Germanicus