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Historical Data
Prehistoric - 17th - 18th - 19th - 20th - Space Age - 21st Go to the bottom of the page
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A small graphic for informations   Prehistoric
From the dawn of history until the beginning of the 17th century the known. universe consisted of only eight bodies. These are the celestial bodies. that can be seen easily without any optical instruments.
  Mercury  
  Venus  
  Earth  
  Moon  
  Mars  
  Jupiter  
  Saturn  
  Sun  

17th Century
The invention of the telescope by Hans Lippershey allowed a better observation of the heaven. Galileo Galilei first turned a telescope on the heaven and the so far known celestial bodies and so started discovery of new celestial bodies.
1610  Io   Simon Marius, Galileo Galilei
1610  Europe   Simon Marius, Galileo Galilei
1610  Ganymede   Simon Marius, Galileo Galilei
1610  Callisto   Simon Marius, Galileo Galilei
1655  Titan   Christiaan Huygens
1671  Iapetus   Giovanni Domenico Cassini
1672  Rhea   Giovanni Domenico Cassini
1684  Tethys   Giovanni Domenico Cassini
1684  Dione   Giovanni Domenico Cassini

18th Century
Just a fistful of new celestial bodies were discovered in the 18th 18th century, not counting many new discovered comets.
1781  Uranus   Sir Friedrich William Herschel
1787  Titania   Sir Friedrich William Herschel
1787  Oberon   Sir Friedrich William Herschel
1789  Mimas   Sir Friedrich William Herschel
1789  Enceladus   Sir Friedrich William Herschel

19th Century
The number of celestial bodies in the solar system increased in the 19th century with the discovery of the asteroids (more than 400 alone during the 19th century). Additionally, some larger celestial bodies were discovered, too.
1801  Ceres   Giuseppe Piazzi
1802  Pallas   Heinrich Wilhelm Olbers
1804  Juno   Karl Ludwig Harding
1807  Vesta   Heinrich Wilhelm Olbers
1846  Neptune   Johann Gottfried Galle
1846  Triton   William Lassell
1848  Hyperion   William Cranch Bond, William Lassell
1851  Ariel   William Lassell
1851  Umbriel   William Lassell
1877  Phobos   Asaph Hall
1877  Deimos   Asaph Hall
1884  Ida   Johann Palisa
1885  Mathilde   Johann Palisa
1892  Amalthea   Edward Emerson Barnard
1898  Eros   Gustav Witt, August Honoré Pierre Charlois
1898  Phoebe   William Henry Pickering

Early 20th Century
In the early 20th century, before sending space probes to the planets, were some additional celestial bodies discovered. The numbers of known asteroids and comets increased dramatically.
1904  Himalia   Charles Dillon Perrine
1905  Elara   Charles Dillon Perrine
1908  Pasiphae   Philibert Jacques Melotte
1914  Sinope   Seth Barnes Nicholson
1916  Gaspra   Grigoriy Nikolajewitsch Neujmin
1930  Pluto   Clyde William Tombaugh
1938  Lysithea   Seth Barnes Nicholson
1938  Carme   Seth Barnes Nicholson
1948  Miranda   Gerard Peter Kuiper
1949  Nereid   Gerard Peter Kuiper
1951  Ananke   Seth Barnes Nicholson
1966  Janus   Audouin Charles Dollfus
1966  Epimetheus   Richard L. Walker, Stephen M. Larson, John W. Fountain
1974  Leda   Charles Thomas Kowal
1975  Themisto   Charles Thomas Kowal, Elizabeth Roemer
1978  Charon   James Christy

Late 20th Century (Space Age)
In the late 20th century, using space probes to explore the planets, the number of known moons increased dramatically.
1979  Thebe   Stephen P. Synnott, Voyager 1 Team
1979  Adrastea   David C. Jewitt, G. Edward Danielson
1979  Metis   Stephen P. Synnott, Voyager 1 Team
1980  Helene   Pierre Laques, Jean Lecacheux
1980  Telesto   Bradford A. Smith, Harold J. Reitsema, Stephen M. Larson, John W. Fountain
1980  Calypso   Dan Pascu, P. Kenneth Seidelmann, William Baum, Douglas Currie
1980  Atlas   Richard John Terrile
1980  Prometheus   Stewart A. Collins
1980  Pandora   Stewart A. Collins
1985  Puck   Stephen P. Synnott, Voyager 2 Team
1986  Cordelia   Richard John Terrile, Voyager 2 Team
1986  Ophelia   Richard John Terrile, Voyager 2 Team
1986  Bianca   Stephen P. Synnott, Voyager 2 Team
1986  Cressida   Stephen P. Synnott, Voyager 2 Team
1986  Desdemona   Stephen P. Synnott, Voyager 2 Team
1986  Juliet   Stephen P. Synnott, Voyager 2 Team
1986  Portia   Stephen P. Synnott, Voyager 2 Team
1986  Rosalind   Stephen P. Synnott, Voyager 2 Team
1986  Belinda   Stephen P. Synnott, Voyager 2 Team
1986  Perdita   Erich Karkoschka, Voyager 2 Team
1989  Naiad   Richard John Terrile, Voyager 2 Team
1989  Thalassa   Richard John Terrile, Voyager 2 Team
1989  Despina   Stephen P. Synnott, Voyager 2 Team
1989  Galatea   Stephen P. Synnott, Voyager 2 Team
1989  Larissa   Harold J. Reitsema, William B. Hubbard, Voyager 2 Team
1989  Proteus   Stephen P. Synnott, Voyager 2 Team
1990  Pan   Mark R. Showalter
1997  Caliban   Brett James Gladman, Philip D. Nicholson, Joseph A. Burns, John J. Kavelaars
1997  Sycorax   Philip D. Nicholson, Brett James Gladman, Joseph A. Burns, John J. Kavelaars
1999  Callirrhoe   Jim V. Scotti, Timothy B. Spahr, Robert S. McMillan, Jeff A. Larsen
1999  Prospero   Matthew J. Holman, John J. Kavelaars, Brett James Gladman
1999  Setebos   John J. Kavelaars, Brett James Gladman, Matthew J. Holman
1999  Stephano   Brett James Gladman, Matthew J. Holman, John J. Kavelaars

21st Century (Space Age)
Discovery of new moons continued undamped in early 21st century. Improved observation options allow discovery of even smaller celestial bodies.
2000  Megaclite   Scott S. Sheppard, David C. Jewitt, Yanga R. Fernández, Eugene A. Magnier
2000  Taygete   Scott S. Sheppard, David C. Jewitt, Yanga R. Fernández, Eugene A. Magnier
2000  Chaldene   Scott S. Sheppard, David C. Jewitt, Yanga R. Fernández, Eugene A. Magnier
2000  Harpalyke   Scott S. Sheppard, David C. Jewitt, Yanga R. Fernández, Eugene A. Magnier
2000  Kalyke   Scott S. Sheppard, David C. Jewitt, Yanga R. Fernández, Eugene A. Magnier
2000  Iocaste   Scott S. Sheppard, David C. Jewitt, Yanga R. Fernández, Eugene A. Magnier
2000  Erinome   Scott S. Sheppard, David C. Jewitt, Yanga R. Fernández, Eugene A. Magnier
2000  Isonoe   Scott S. Sheppard, David C. Jewitt, Yanga R. Fernández, Eugene A. Magnier
2000  Praxidike   Scott S. Sheppard, David C. Jewitt, Yanga R. Fernández, Eugene A. Magnier
2000  Ymir   Brett James Gladman
2000  Paaliaq   Brett James Gladman
2000  Tarvos   John J. Kavelaars, Brett James Gladman
2000  Ijiraq   John J. Kavelaars, Brett James Gladman
2000  Suttungr   Brett James Gladman, John J. Kavelaars
2000  Kiviuq   Brett James Gladman
2000  Mundilfari   Brett James Gladman, John J. Kavelaars
2000  Albiorix   Matthew J. Holman, Timothy B. Spahr
2000  Skathi   John J. Kavelaars, Brett James Gladman
2000  Erriapo   John J. Kavelaars, Brett James Gladman
2000  Siarnaq   Brett James Gladman, John J. Kavelaars
2000  Thrymr   Brett James Gladman, John J. Kavelaars
2001  Autonoe   Scott S. Sheppard, David C. Jewitt, Jan Kleyna
2001  Thyone   Scott S. Sheppard, David C. Jewitt, Jan Kleyna
2001  Hermippe   Scott S. Sheppard, David C. Jewitt, Jan Kleyna
2001  Aitne   Scott S. Sheppard, David C. Jewitt, Jan Kleyna
2001  Eurydome   Scott S. Sheppard, David C. Jewitt, Jan Kleyna
2001  Euanthe   Scott S. Sheppard, David C. Jewitt, Jan Kleyna
2001  Euporie   Scott S. Sheppard, David C. Jewitt, Jan Kleyna
2001  Orthosie   Scott S. Sheppard, David C. Jewitt, Jan Kleyna
2001  Sponde   Scott S. Sheppard, David C. Jewitt, Jan Kleyna
2001  Kale   Scott S. Sheppard, David C. Jewitt, Jan Kleyna
2001  Pasithee   Scott S. Sheppard, David C. Jewitt, Jan Kleyna
2001  Trinculo   Matthew J. Holman, John J. Kavelaars, Dan Milisavljevic
2001  Francisco   Matthew J. Holman, John J. Kavelaars, Dan Milisavljevic, Brett James Gladman
2001  Ferdinand   Matthew J. Holman, John J. Kavelaars, Dan Milisavljevic, Brett James Gladman
2002  Arche   Scott S. Sheppard
2003  Eris   Michael E. Brown, Chadwick A. Trujillo, David Lincoln Rabinowitz
2003  Hegemone   Scott S. Sheppard
2003  Mneme   Brett James Gladman, John J. Kavelaars, Jean-Marc Petit, Lynne Allen, Scott S. Sheppard
2003  Aoede   Scott S. Sheppard, David C. Jewitt, Yanga R. Fernández
2003  Thelxinoe   Scott S. Sheppard, David C. Jewitt, Brett James Gladman, John J. Kavelaars
2003  Kallichore   Scott S. Sheppard, David C. Jewitt, Yanga R. Fernández
2003  Helike   Scott S. Sheppard, David C. Jewitt, Yanga R. Fernández
2003  Carpo   Scott S. Sheppard, Brett James Gladman, John J. Kavelaars, David C. Jewitt
2003  Eukelade   Scott S. Sheppard, David C. Jewitt, Yanga R. Fernández
2003  Cyllene   Scott S. Sheppard, David C. Jewitt, Jan Kleyna
2003  Kore   Scott S. Sheppard, David C. Jewitt, Jan Kleyna
2003  Narvi   Scott S. Sheppard, David C. Jewitt, Jan Kleyna
2003  Margaret   Scott S. Sheppard, David C. Jewitt
2003  Mab   Mark R. Showalter, Jack J. Lissauer
2003  Cupid   Mark R. Showalter, Jack J. Lissauer
2003  Psamathe   Scott S. Sheppard, David C. Jewitt, Jan Kleyna
2004  Methone   Sebastien Charnoz, Cassini Team
2004  Pallene   Sebastien Charnoz, Cassini Team
2004  Polydeuces   Carolyn C. Porco, Cassini Team
2005  Daphnis   Carolyn C. Porco, Cassini Team
2005  Nix   Hubble Space Telescope Team
2005  Hydra   Hubble Space Telescope Team
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