1036 Ganymed

Stony near-Earth asteroid the moon of Jupiter Ganymede (moon) April 2019 yes 1036 Ganymed #FFC2E0 1036 Ganymed.png A three-dimensional model of 1036 Ganymed based on its lightcurve on the top and an image of 1036 Ganymed on the bottom. W. Baade Bergedorf Obs. 23 October 1924 (1036) Ganymed 1924 TD1952 BF1954 HH ˈ ɡ æ n ə m ɛ d Ganymedean ɡ æ n ə ˈ m iː d i ə n Ganymede(Greek mythology) AmorNEO 21 November 2025 (JD 2461000.5) 0 100.96 yr (36,876 d) 4.0860 AU 1.2440 AU 2.6650 AU 0.5332 4.35 yr (1,589 d) 97.59° 0.2265 ms / day 26.681° 215.44° 132.50° 0.3433 AU (134 LD) 0.0310 AU 39.3 x 18.9 km 31.66 2.8 km35.01 0.78 km37.675 0.399 km 10.297 h 0.2380.2430.2926 Tholen SSMASS SSU–B 0.417B–V 0.882 0.008V–R 0.515 0.004V–I 0.981 0.005 9.459.50 1036 Ganymed, provisional designation 1924 TD, is a stony asteroid on a highly eccentric orbit, classified as a near-Earth object of the Amor group. It was discovered by German astronomer Walter Baade at the Bergedorf Observatory in Hamburg on 23 October 1924, and named after Ganymede from Greek mythology. With a diameter of approximately 35 km mi off us, Ganymed is the largest of all near-Earth objects but does not cross Earth's orbit. The S-type asteroid has a rotation period of 10.3 hours. Orbit and classification thumb|180px|Orbit of Ganymed (blue), with the inner planets and Jupiter (outermost). Ganymed is an Amor asteroid, a subgroup of the near-Earth asteroids that approach the orbit of Earth from beyond, but do not cross it. It orbits the Sun at a distance of 1.2–4.1 AU about once every 4 years and 4 months (i.e., 52 months or 1,589 days; semi-major axis of 2.66 AU). Its orbit has a high eccentricity of 0.53 and an inclination of 27° with respect to the ecliptic. Close approaches Earth approach Ganymed has a minimum orbit intersection distance with Earth of 0.343339 AU km 2 off on, or 134 lunar distance. Mars approach Due to the high eccentricity of its orbit, Ganymed is also a Mars-crosser, intersecting the orbit of the Red Planet. On 2176 12 16 y y, it will pass at a distance of 0.02868 AU km mi on 3 from Mars. Name The minor planet of Ganymed was named after Ganymede from Greek mythology, using the German spelling ("Ganymed"). Ganymede was a Trojan prince abducted by Zeus to serve as a cup-bearer to the Greek gods. The name had previously also been given to Jupiter's third moon, "Ganymede", which was discovered in 1610 by Italian astronomer Galileo Galilei. Physical characteristics Owing to its early discovery date, Ganymed has a rich observational history. A 1931 paper published the absolute magnitude, based on observations to date, as 9.24, slightly brighter than the present value of 9.45. Ganymed is a stony S-type asteroid, in the Tholen, SMASS and in the S3OS2 taxonomy. This means that it is relatively reflective and composed of iron and magnesium silicates. Spectral measurements put Ganymed in the S (VI) spectral subtype, indicating a surface rich in orthopyroxenes, and possibly metals (although if metals are present they are covered and not readily apparent in the spectra). Diameter and albedo According to the surveys carried out by the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer (WISE), Ganymed measures between 31.66 and 37.67 kilometers in diameter and its surface has an albedo between 0.238 and 0.293. The Collaborative Asteroid Lightcurve Link derives an albedo of 0.2809 and a mean-diameter of 31.57 kilometers based on an absolute magnitude of 9.50. Carry published a diameter 34.28 1.38 kilometers in 2012. An occultation of a star by Ganymed was observed from California on 22 August 1985. Additional observations in 2011 gave an occultation cross-section with a semi-major and minor axis of 39.3 and 18.9 kilometers, respectively. Rotation and poles A large number of rotational lightcurves of Ganymed have been obtained from photometric observations since 1985. Analysis of the best-rated lightcurves obtained by American photometrist Frederick Pilcher at his Organ Mesa Observatory G50 in New Mexico during 2011 gave a rotation period of 10.297 hours with a consolidated brightness amplitude between 0.28 and 0.31 magnitude (U=3-/3/3). Three studies using modeled photometric data from the Uppsala Asteroid Photometric Catalogue, WISE thermal infrared data and other sources, gave a concurring period of 10.313, 10.31284, and 10.31304 hours, respectively. Each modeled lightcurve also determined two spin axes of (214.0°, −73.0°), (190.0°, −78.0°), as well as (198.0°, −79.0°) in ecliptic coordinates (λ, β; L1/B1), respectively. In 1998, radar observations of Ganymed by the Arecibo radio telescope produced images of the asteroid, revealing a roughly spherical object. 1036 Ganymed Radar Images http://naic.edu/~nolan/radar/R1150/ 27 April 2009 22 February 2012 https://web.archive.org/web/20120222223839/http://naic.edu/~nolan/radar/R1150/ dead Polarimetric observations conducted by Japanese astronomers concluded that there was a weak correlation between the object's light- and polarimetry curve as a function of rotation angle. Because polarization is dependent on surface terrain and composition, rather than the observed size of the object like the lightcurve, this suggests that the surface features of the asteroid are roughly uniform over its observed surface. References 2025-10-09 last obs. JPL Small-Body Database Browser: 1036 Ganymed (1924 TD) https://ssd.jpl.nasa.gov/tools/sbdb_lookup.html#/?sstr=1036 Jet Propulsion Laboratory 2025-10-14 last observation: 2025-10-09 JPL Close-Approach Data: 1036 Ganymed (1924 TD) https://ssd.jpl.nasa.gov/tools/sbdb_lookup.html#/?sstr=Ganymed&view=OPC 2012-12-13 https://archive.today/20121213205728/http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=Ganymed;cad=1%23cad live 2025-10-14 Dictionary of Minor Planet Names – (1036) Ganymed Schmadel Lutz D. Springer Berlin Heidelberg (1036) Ganymed 89 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_1037 1036 Ganymed (1924 TD) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=1036 29 August 2018 Asteroids and comets rotation curves – (1036) Ganymed Behrend Raoul Geneva Observatory http://obswww.unige.ch/~behrend/page3cou.html#001036 29 August 2018 3 December 2002 https://web.archive.org/web/20021203214643/http://obswww.unige.ch/~behrend/page3cou.html#001036 dead Putilin J. May 1931 Brightness of the minor planet 1036 Ganymed Astronomische Nachrichten 242 11 213–216 1931AN....242..213P 10.1002/asna.19312421104 S. K. Fieber-Beyer M. J. Gaffey P. A. Abell V. Reddy March 2007 Mineralogical Characterization of Near Earth Amor Asteroid 1036 Ganymed https://www.lpi.usra.edu/meetings/lpsc2007/pdf/1695.pdf 38th Lunar and Planetary Science Conference 1388 1338 1695 2007LPI....38.1695F 29 August 2018 6 Hiroyuki Nakayama Yasumasa Fujii Masateru Ishiguro Ryosuke Nakamura Sozo Yokogawa Fumi Yoshida Tadashi Mukai July 2000 Observations of Polarization and Brightness Variations with the Rotation for Asteroids 9 Metis, 52 Europa, and 1036 Ganymed Icarus 146 1 220–231 2000Icar..146..220N 10.1006/icar.2000.6396 6 A. Mainzer T. Grav J. Bauer J. Masiero R. S. McMillan R. M. Cutri R. Walker E. Wright P. Eisenhardt D. J. Tholen T. Spahr R. Jedicke L. Denneau E. DeBaun D. Elsbury T. Gautier S. Gomillion E. Hand W. Mo J. Watkins A. Wilkins G. L. Bryngelson A. Del Pino Molina S. Desai M. Gómez Camus S. L. Hidalgo I. Konstantopoulos J. A. Larsen C. Maleszewski M. A. Malkan J.-C. Mauduit B. L. Mullan E. W. Olszewski J. Pforr A. Saro J. V. Scotti L. H. Wasserman December 2011 NEOWISE Observations of Near-Earth Objects: Preliminary Results The Astrophysical Journal 743 2 17 2011ApJ...743..156M 10.1088/0004-637X/743/2/156 1109.6400 239991 B. Carry December 2012 Density of asteroids Planetary and Space Science 73 1 98–118 10.1016/j.pss.2012.03.009 2012P&SS...73...98C 1203.4336 119226456 See Table 1. Asteroid 1036 Ganymed Small Bodies Data Ferret https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=1036+Ganymed 29 August 2018 https://web.archive.org/web/20201107042619/https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=1036+Ganymed 7 November 2020 dead 1036 29 August 2018 6 A. K. Mainzer J. M. Bauer R. M. Cutri T. Grav E. A. Kramer J. R. Masiero C. R. Nugent S. M. Sonnett R. A. Stevenson E. L. Wright June 2016 NEOWISE Diameters and Albedos V1.0 https://sbnarchive.psi.edu/pds3/non_mission/EAR_A_COMPIL_5_NEOWISEDIAM_V1_0/data/neowise_neos.tab NASA Planetary Data System EAR-A-COMPIL-5-NEOWISEDIAM-V1.0 2016PDSS..247.....M 29 August 2018 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 free (online, AcuA catalog p. 153) 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 12 March 2020 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 118700974 (catalog) A. W. Harris J. W. Young June 1985 Photometric Results for Earth Approaching Asteroids. Bulletin of the American Astronomical Society 17 726 1985BAAS...17R.726H D. F. Lupishko F. P. Velichko V. V. Kazakov V. G. Shevchenko February 1987 The asteroid 1036 Ganymede - Light curves, period, and sense of rotation Kinematika I Fizika Nebesnykh Tel 3 92 0233-7665 1987KFNT....3...92L D. F. Lupishko F. P. Velichko V. G. Shevchenko June 1988 Photometry of the AMOR type asteroids 1036 Ganymede and 1139 Atami Astronomicheskii Vestnik 22 167–173.InRussian 0320-930X 1988AVest..22..167L 6 G. Hahn P. Magnusson A. W. Harris J. W. Young L. A. Belkora N. J. Fico D. F. Lupishko V. G. Shevchenko F. P. Velichko R. Burchi G. Ciunci M. di Martino H. Debehogne April 1989 Physical studies of Apollo-Amor asteroids - UBVRI photometry of 1036 Ganymed and 1627 Ivar Icarus 78 2 363–381 0019-1035 1989Icar...78..363H 10.1016/0019-1035(89)90184-X M. Kaasalainen J. Torppa J. Piironen October 2002 Models of Twenty Asteroids from Photometric Data Icarus 159 2 369–395 2002Icar..159..369K 10.1006/icar.2002.6907 Frederick Pilcher Vladimir Benishek John W. Briggs Andrea Ferrero Daniel A. III Klinglesmith Curtis Alan Warren July 2012 Eight Months of Lightcurves of 1036 Ganymed https://stellafane.org/misc/activities/publications/1036-Ganymed.pdf The Minor Planet Bulletin 39 3 141–144 1052-8091 2012MPBu...39..141P 29 August 2018 Brian A. Skiff Edward Bowell Bruce W. Koehn Jason J. Sanborn Kyle P. McLelland Brian D. Warner July 2012 Lowell Observatory Near-Earth Asteroid Photometric Survey (NEAPS) - 2008 May through 2008 December The Minor Planet Bulletin 39 3 111–130 1052-8091 2012MPBu...39..111S F. P. Velichko P. Magnusson March 2012 Photometry and Polarimetry of the Largest NEA 1036 Ganymed Astronomicheskii Tsirkulyar 1575 1–2 2012ATsir1575....1V F. P. Velichko V. A. Psarev N. N. Kiselev S. V. Zaitsev S. F. Velichko R. Yu. Krymsaljuk March 2013 Photometry and Polarimetry of Largest NEA 1036 Ganymed https://www.lpi.usra.edu/meetings/lpsc2013/pdf/2372.pdf 44th Lunar and Planetary Science Conference 1719 2372 2013LPI....44.2372V 29 August 2018 J. Hanus M. Delbo' J. Durech V. Alí-Lagoa August 2015 Thermophysical modeling of asteroids from WISE thermal infrared data - Significance of the shape model and the pole orientation uncertainties Icarus 256 101–116 2015Icar..256..101H 10.1016/j.icarus.2015.04.014 1504.04199 118480799 Warner, Brian D. October 2015 Near-Earth Asteroid Lightcurve Analysis at CS3-Palmer Divide Station: 2015 March–June The Minor Planet Bulletin 42 4 256–266 32455361 7244091 1052-8091 2015MPBu...42..256W M. Viikinkoski J. Hanus M. Kaasalainen F. Marchis J. Durech November 2017 Adaptive optics and lightcurve data of asteroids: twenty shape models and information content analysis Astronomy and Astrophysics 607 14 2017A&A...607A.117V 10.1051/0004-6361/201731456 1708.05191 67813915 Chien-Hsien Lin Wing-Huen Ip Zhong-Yi Lin Yu-Chi Cheng Hsing-Wen Lin Chan-Kao Chang March 2018 Photometric survey and taxonomic identifications of 92 near-Earth asteroids Planetary and Space Science 152 116–135 2018P&SS..152..116L 10.1016/j.pss.2017.12.019 Further reading Spectral observations of 19 weathered and 23 fresh NEAs and their correlations with orbital parameters Fevig Ronald A. May 2007 Icarus 188 1 175–188 10.1016/j.icarus.2006.11.023 Fink U 2007Icar..188..175F External links Radar Images https://web.archive.org/web/20120222223839/http://naic.edu/~nolan/radar/R1150/ 22 February 2012 of 1036 Ganymed, Arecibo Observatory project R1150 Frederick Pilcher – lightcurves https://web.archive.org/web/20181211081452/http://aslc-nm.org/Pilcher.html 11 December 2018 , Astronomical Society of Las Cruzes 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 1036 1036 Ganymed 1035 Amata 1036 1037 Davidweilla 001036 Category:Discoveries by Walter Baade Category:Named minor planets 001036 001036 19241023