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langs: 9 декабря [ru] / december 9 [en] / 9. dezember [de] / 9 décembre [fr] / 9 dicembre [it] / 9 de diciembre [es]

days: december 6 / december 7 / december 8 / december 9 / december 10 / december 11 / december 12

Asteroid / Asteroid


#1 (148975) 2001 XA255

(148975) 2001 XA 255 , provisional designation : 2001 XA 255 , is a dark minor planet in the outer Solar System , classified as centaur , approximately 38 kilometers (24 miles) in diameter. [1] It was discovered on 9 December 2001, by David C. Jewitt , Scott S. Sheppard , and Jan Kleyna observing fr

#2 (131696) 2001 XT254

(131696) 2001 XT 254 , provisionally known as 2001 XT254 , is a Kuiper belt object (KBO) [2] that has a 3:7 resonance with Neptune . [3] (131696) 2001 XT 254 Discovery [1] Discovered   by Sheppard, S. S., Kleyna, J., Jewitt, D. C. Discovery   date 9 December 2001 Designations MPC   designation (1316

#3 794 Irenaea

794 Irenaea ( prov. designation : A914 QB or 1914 VB ) is a dark background asteroid from the outer regions of the asteroid belt . It was discovered on 27 August 1914, by Austrian astronomer Johann Palisa at the Vienna Observatory . [1] The presumed C-type asteroid has a rotation period of 9.1 hours

#4 4 Vesta

Vesta ( minor-planet designation : 4 Vesta ) is one of the largest objects in the asteroid belt , with a mean diameter of 525 kilometres (326   mi) . [10] It was discovered by the German astronomer Heinrich Wilhelm Matthias Olbers on 29 March 1807 [6] and is named after Vesta , the virgin goddess of

#5 (5407) 1992 AX

(5407) 1992 AX , provisional designation 1992 AX , is a stony asteroid and a synchronous binary Mars-crosser from the innermost region of the asteroid belt , approximately 3.6 kilometers (2.2 miles) in diameter. It was discovered on 4 January 1992, by Japanese astronomers Seiji Ueda and Hiroshi Kane

#6 735 Marghanna

735 Marghanna ( prov. designation : A912 XD or 1912 PY ) is a large carbonaceous background asteroid from the central regions of the asteroid belt , approximately 74 kilometers (46 miles) in diameter. It was discovered on 9 December 1912, by German astronomer Heinrich Vogt at the Heidelberg-Königstu

#7 Ceres (dwarf planet)

Ceres ( / ˈ s ɪər iː z / ; [17] minor-planet designation : 1 Ceres ) is a dwarf planet in the asteroid belt between the orbits of Mars and Jupiter . It was the first asteroid discovered, on 1 January 1801, by Giuseppe Piazzi at Palermo Astronomical Observatory in Sicily, and announced as a new plane

#8 3 Juno

3 Juno is a large asteroid in the asteroid belt . Juno was the third asteroid discovered, in 1804, by German astronomer Karl Harding . [15] It is one of the twenty largest asteroids and one of the two largest stony ( S-type ) asteroids, along with 15 Eunomia . It is estimated to contain 1% of the to

#9 1104 Syringa

1104 Syringa , provisional designation 1928 XA , is a dark background asteroid from the central regions of the asteroid belt , approximately 23 kilometers in diameter. It was discovered on 9 December 1928, by German astronomer Karl Reinmuth at the Heidelberg-Königstuhl State Observatory in southwest

#10 349 Dembowska

Dembowska ( minor planet designation : 349 Dembowska ) is a large asteroid of the main belt, discovered on 9 December 1892, by the French astronomer Auguste Charlois while working at the observatory in Nice , France. [5] It is named in honor of the Baron Hercules Dembowski , an Italian astronomer wh

#11 736 Harvard

736 Harvard ( prov. designation : A912 WC or 1912 PZ ) is a stony background asteroid from the inner regions of the asteroid belt , approximately 17 kilometers (11 miles) in diameter. It was discovered on 16 November 1912, by American astronomer Joel Hastings Metcalf at the Winchester Observatory (

#12 82 Alkmene

Alkmene ( minor planet designation : 82 Alkmene ) is a main-belt asteroid . Alkmene was discovered by R. Luther on 7 November 1864 and named after Alcmene , the mother of Herakles in Greek mythology . Based on IRAS data, Alkmene is estimated to be about 61 kilometres (38   mi) in diameter. [3] A sat

#13 409 Aspasia

Aspasia ( minor planet designation : 409 Aspasia ) is a large main-belt asteroid that was discovered by French astronomer Auguste Charlois on 9 December 1895 in Nice . It is classified as a CX-type asteroid. [5] 409 Aspasia A three-dimensional model of 409 Aspasia based on its light curve Discovery

#14 5261 Eureka

5261 Eureka is the first Mars trojan discovered. [5] It was discovered by David H. Levy and Henry Holt at Palomar Observatory on 20 June 1990. [1] It trails Mars (at the L 5   point ) at a distance varying by only 0.3 AU during each revolution (with a secular trend superimposed, changing the distanc

#15 (111253) 2001 XU10

(111253) 2001 XU 10 , provisional designation 2001 XU 10 , is an asteroid on an eccentric orbit, classified as near-Earth object and potentially hazardous asteroid of the Apollo group , approximately 3 kilometers in diameter. It was discovered on 9 December 2001, by astronomers of the LINEAR program

#16 2015 XX169

2015 XX 169 (also written 2015 XX169 ) is an Apollo asteroid that is a temporary horseshoe companion to the Earth , the tenth known Earth horseshoe librator. [5] A close encounter with the Earth on 14 December 2015 caused the value of the semi-major axis of 2015 XX 169 to drift slowly upwards, and t


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Comet / Comet


#1 80P/Peters–Hartley

80P/Peters–Hartley is a periodic comet in the Solar System with an orbital period of 8.12 years. Periodic comet with 8 year orbit 80P/Peters–Hartley Discovery Discovered by Christian Heinrich Friedrich Peters of Capodimonte Observatory , Naples, Italy Discovery date 26 June 1846 Alternative designat

#2 Halley's Comet

Halley's Comet or Comet Halley , officially designated 1P/Halley , is a short-period comet visible from Earth every 75–79 years. [1] Halley is the only known short-period comet that is regularly visible to the naked eye from Earth, and thus the only naked-eye comet that can appear twice in a human l

#3 18D/Perrine–Mrkos

18D/Perrine–Mrkos is a periodic comet in the Solar System , originally discovered by the American-Argentine astronomer Charles Dillon Perrine ( Lick Observatory , California , United States) on December 9, 1896. For some time it was thought to be a fragment of Biela's Comet . [3] Lost comet 18D/Perr

#4 Great Comet of 1744

The Great Comet of 1744 , whose official designation is C/1743 X1 , and which is also known as Comet de Chéseaux or Comet Klinkenberg-Chéseaux , was a spectacular comet that was observed during 1743 and 1744. It was discovered independently in late November 1743 by Jan de Munck , in the second week

#5 C/2014 Q3 (Borisov)

C/2014 Q3 (Borisov) is a periodic comet discovered at apparent magnitude 17 on 22 August 2014 by amateur astronomer Gennadiy Borisov using a 0.3-meter (12   in) astrograph . [1] It is the third comet discovered by Borisov. The comet is best viewed from the northern hemisphere . C/2014 Q3 (Borisov) D

#6 79P/du Toit–Hartley

79P/du Toit–Hartley or du Toit 2 is a periodic comet , now divided into two parts, in the Solar System with an orbital period of 5.06 years. Periodic comet with 5 year orbit 79P/du Toit–Hartley Discovery Discovered by Daniel du Toit , Boyden Observatory , South Africa and Malcolm Hartley of the UK S

#7 70P/Kojima

70P/Kojima is a periodic comet in the Solar System with a current orbital period of 7.05 years. [3] [4] Periodic comet with 7 year orbit 70P/Kojima Discovery Discovered by Nobuhisa Kojima at Ishiki, Aichi, Japan Discovery date 27 December 1970 Orbital characteristics A Epoch 2014-Dec-9 Aphelion 5,34

#8 22P/Kopff

Comet Kopff or 22P/Kopff is a periodic comet in the Solar System . Discovered on August 23, 1906, it was named after August Kopff who discovered the comet. The comet was missed on its November 1912 return, but was recovered on its June 1919 return and has been seen at every apparition since. [4] Clo

#9 C/1980 E1 (Bowell)

C/1980 E1 is a non-periodic comet discovered by Edward L. G. Bowell on 11 February 1980 and which came closest to the Sun ( perihelion ) in March 1982. It is leaving the Solar System on a hyperbolic trajectory due to a close approach to Jupiter. In the 42 years since its discovery only two objects w


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Galaxy / Galaxy


#1 NGC 1439

NGC 1439 is an elliptical galaxy located in constellation of Eridanus . Situated about 77 million light years away, it is a member of the Eridanus cluster of galaxies, a cluster of about 200 galaxies. It was discovered by William Herschel on 9 December 1784. Elliptical galaxy in the constellation Er

#2 NGC 4666

NGC 4666 is a spiral galaxy in the equatorial constellation of Virgo , located at a distance of approximately 55 megalight-years from the Milky Way . [3] It was discovered by the German-born astronomer William Herschel on February 22, 1784. It is a member of the Virgo II Groups , a series of galaxie

#3 NGC 1353

NGC 1353 is a flocculent spiral galaxy situated in the constellation of Eridanus . Located about 70 million light years away, it is a member of the Eridanus cluster of galaxies, a cluster of about 200 galaxies. It was discovered by William Herschel on 9 December 1784. [3] Flocculent spiral galaxy in

#4 NGC 3184

NGC 3184 , the Little Pinwheel Galaxy, is a spiral galaxy approximately 40 million light-years away [2] in the constellation Ursa Major . It has two HII regions named NGC 3180 [3] and NGC 3181 . [4] Spiral galaxy in the constellation Ursa Major NGC 3184 NGC 3184 as observed with the Spitzer Space Te

#5 NGC 3585

NGC 3585 is an elliptical or a lenticular galaxy located in the constellation Hydra . It is located at a distance of circa 60 million light-years from Earth, which, given its apparent dimensions, means that NGC 3585 is about 80,000 light years across. It was discovered by William Herschel on Decembe

#6 NGC 1332

NGC 1332 is an almost edge-on elliptical galaxy located in constellation of Eridanus . Situated about 70 million light years away, it is a member of the Eridanus cluster of galaxies, a cluster of about 200 galaxies. It is also the brightest member of the NGC 1332 Group . It was discovered by William

#7 NGC 1187

NGC 1187 is a barred spiral galaxy located about 60 million light-years away in the constellation of Eridanus . It was discovered on December 9, 1784 by the astronomer William Herschel . [4] Barred spiral galaxy in Eridanus NGC 1187 NGC 1187 has hosted two supernova explosions during the last thirty

#8 NGC 2527

NGC 2527 (also catalogued as NGC 2520 ) is an open cluster in the constellation Puppis . It was discovered by William Herschel on December 9, 1784. The cluster was also observed by John Herschel on January 7, 1831. He also observed it on February 5, 1837, identifying it as a different object, which

#9 NGC 1000

NGC 1000 is an elliptical galaxy located in the constellation of Andromeda . It was discovered on December 9, 1871 by Édouard Jean-Marie Stephan . [3] It is the 1,000th object classified by the New General Catalogue . Elliptical galaxy in the constellation Andromeda NGC 1000 Pan-STARRS image of NGC

#10 NGC 1426

NGC 1426 is an elliptical galaxy approximately 59 million light-years away from Earth in the constellation of Eridanus . [1] It was discovered by William Herschel in December 9, 1784. [3] Elliptical galaxy in the constellation Eridanus NGC 1426 NGC 1426 ( NASA/ESA HST ) Observation data ( J2000.0 ep

#11 NGC 216

NGC 216 is a lenticular galaxy located approximately 68.8 million light-years from the Sun [2] in the constellation Cetus . It was discovered on December 9, 1784 by William Herschel . [3] Lenticular galaxy in the constellation Cetus NGC 216 SDSS image of NGC 216 Observation data ( J2000 epoch ) Cons


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Institution / Institution


#1 Starkenburg Observatory

The Starkenburg Observatory ( German : Starkenburg-Sternwarte ) is an astronomical observatory in Heppenheim , Germany. It was founded in 1970, and currently has about 150 members. [2] [3] Observatory Starkenburg Observatory Named after Starkenburg   Observatory   code 611   Location Starkenburg , G

#2 Astronomical Observatory of Mallorca

The Astronomical Observatory of Mallorca ( Spanish : Observatorio Astronómico de Mallorca , OAM ) is an observatory just south of Costitx , Mallorca , Spain . [3] Observatory Astronomical Observatory of Mallorca Alternative   names ca Observatory   code 620   Location Costitx , Mallorca , Spain Coor

#3 Kleť Observatory

Kleť Observatory ( Czech : Hvězdárna Kleť ; obs. code : 046 ) is an astronomical observatory in the Czech Republic . It is situated in South Bohemia , south of the summit of Mount Kleť , near the town of České Budějovice . Constructed in 1957, the observatory is at an altitude of 1,070 metres (3,510

#4 Cincinnati Observatory

The Cincinnati Observatory is located in Cincinnati , Ohio (United States) on top of Mount Lookout . It consists of two observatory buildings housing an 11-inch (28   cm) and 16   inch (41   cm) aperture refracting telescope . It is the oldest professional observatory in the United States. [3] It wa

#5 Badlands Observatory

The Badlands Observatory (IAU code 918 ) is an astronomical observatory named after the Badlands National Park , located in Quinn , South Dakota, near the city of Wall , United States. The observatory was founded in 2000. [2] by American amateur astronomer Ron Dyvig , who was associated with the Opt

#6 Macarthur Astronomical Society

Macarthur Astronomical Society is an organisation of amateur astronomers , based in the Macarthur Region of outer South Western Sydney , NSW , Australia , including the local government areas of the City of Campbelltown , Camden Council , Wollondilly Shire , the City of Liverpool and surrounding dis


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Meteorite / Meteorite


#1 HD 181433 d

HD 181433 d is an extrasolar planet located approximately 87 light years away [3] in the constellation of Pavo , orbiting the star HD 181433 . This planet has a minimum mass of 0.54 Jupiter mass and takes 2172 days to orbit the star. The average orbital distance is 3.00 AU. At periastron distance, i


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Researcher / Researcher


#1 Thierry Pauwels

Thierry Pauwels (born 22 July 1957, Ghent ) is a Belgian astronomer from the Royal Observatory of Belgium . [2] [3] Between 1996 and 2008 he discovered and co-discovered 146 minor planets . This makes him one of the top 100 minor planet discoverers. [1] Belgian astronomer Minor planetss discovered:

#2 Stefano Sposetti

Stefano Sposetti (born 22 December 1958) is a Swiss amateur astronomer and a prolific discoverer of minor planets . [2] [3] He lives in Gnosca , in the Italian-speaking part of Switzerland in the Ticino Alps , where the Gnosca Observatory is located. Swiss astronomer Flyby of Asteroid 2004 FH in Mar

#3 Paul G. Comba

Paul G. Comba (1926 – April 5, 2017) was an Italian-American computer scientist , an amateur astronomer and a prolific discoverer of minor planets . [2] Paul G. Comba Born 1926   ( 1926 ) Tunisia Died April 4, 2017 (2017-04-04) (aged   90–91) Education Ph.D. Alma   mater University of Turin , Blufft

#4 Ernest Mouchez

Ernest Amédée Barthélemy Mouchez (24 August 1821 – 29 June 1892) was a French naval officer who became director of the Paris Observatory and launched the ill-fated Carte du Ciel project in 1887. French astronomer and admiral Ernest Mouchez Born ( 1821-08-24 ) 24 August 1821 Madrid , Spain Died 29 Ju

#5 Michel Ory

Michel Ory (born 18 April 1966) is a Swiss amateur astronomer and a prolific discoverer of minor planets and comets , [1] who was one of five winners of the 2009 Edgar Wilson Award for his discovery of 304P/Ory (P/2008 Q2 Ory), a periodic comet of the Jupiter family on 27 August 2008, [2] using a 24

#6 Jan Terlouw

Jan Cornelis Terlouw (born 15 November 1931) is a retired Dutch politician, physicist and author. A member of the of the Democrats 66 (D66) party, he served as Deputy Prime Minister of the Netherlands from 1981 to 1982 under Prime Minister Dries van Agt . This article includes a list of general refe

#7 Takeshi Urata

Takeshi Urata ( 浦田 武 , Urata Takeshi , 1947 – December 15, 2012) [2] was a Japanese astronomer . He was a prolific discoverer of asteroids , observing at Nihondaira Observatory . Japanese astronomer Minor planets discovered: 642   [1] see §   List of discovered minor planets In 1978 he became the fi

#8 Yoshisada Shimizu

Yoshisada Shimizu ( 清水 義定 , Shimizu Yoshisada , born 1943) is a Japanese amateur astronomer and a prolific discoverer of hundreds of asteroids since 1993. An orthopaedist by profession, he is also known as an astrophotographer . [1] [2] Japanese astronomer Minor planets discovered: 311   [1] see §  

#9 Sarah Salmond

Sarah Salmond (7 August 1864 – 18 October 1956 in Dunedin , New Zealand [1] ) was a notable New Zealand governess and astronomer. Governess, astronomer Sarah Salmond Born Sarah Cockburn 7 August 1864 Died 18 October 1956 Occupation astronomer, governess

#10 Jana Tichá

Jana Tichá (born 1965 in České Budějovice ) is a Czech astronomer and discoverer of minor planets . She studied at the University of Economics in Prague and graduated in 1987. In 1992 she was selected for the position of a director of the Kleť Observatory . Czech astronomer Jana Tichá with her ex-hu

#11 Robert Schommer

Robert A. Schommer (December 9, 1946 – December 12, 2001) was an American observational astronomer . He was a professor at Rutgers University and later a project scientist for the U.S. office of the Gemini Observatory Project at the Cerro Tololo Inter-American Observatory (CTIO) in Chile . He was kn

#12 Zdeněk Moravec

Zdeněk Moravec (born 1968) is a Czech astronomer and astrophysicist . Czech astronomer Minor planets discovered: 93   [1] see §   List of discovered minor planets Zdeněk Moravec is a graduate from Charles University in Prague . He became a prolific discoverer of minor planets , during his stay at th

#13 Stephen P. Laurie

Stephen P. Laurie is a British amateur astronomer . He is a prolific discoverer of asteroids and comets , [1] although his profession is that of an actuary . [2] He has also worked on searches for dwarf stars [3] and discovered a supernova (SN 1997bq in NGC 3147) in 1997. [2] [4] British astronomer

#14 Dennis di Cicco

Dennis di Cicco (born 1950) is an American amateur astronomer and a discoverer of minor planets , who lives in New England . American astronomer Minor planets discovered: 60   [1] see §   List of discovered minor planets He has discovered 60 numbered asteroids from his backyard observatory in Sudbur

#15 Frank B. Zoltowski

Frank B. Zoltowski (born 1957) is an Australian amateur astronomer and prolific discoverer of minor planets who lives in Woomera , South Australia. In 1998, he was awarded a " Gene Shoemaker NEO Grant" for improved near-Earth object searches. [2] [3] Australian astronomer Frank B. Zoltowski Born 195

#16 Atsushi Sugie

Atsushi Sugie ( 杉江 淳 , Sugie Atsushi ) is a Japanese astronomer and a discoverer of minor planets . He works at the Dynic Astronomical Observatory and has discovered many planets while working there. [2] The Minor Planet Center credits him with the discovery of 122 numbered minor planets during 1988

#17 William Kwong Yu Yeung

William Kwong Yu Yeung (born 1960; also known simply as Bill Yeung ; Chinese : 楊光宇 ) is a Hong Kong -born, Canadian amateur astronomer with telescopes based in the United States . [2] [3] Astronomer noted for the discovery of over 2,000 minor planets Minor planets discovered: 2031   [1] see §   List

#18 John Jackson (astronomer)

John Jackson (11 February 1887 – 9 December 1958) was a Scottish astronomer . Scottish astronomer John Jackson (1887-1958), British astronomer He was awarded The Gold Medal of the Royal Astronomical Society for his work on stellar parallaxes and star positions. [1]

#19 Wolf Bickel

Wolf Bickel (born 6 July 1942, Bensberg ) is a German amateur astronomer and a prolific discoverer of asteroids , observing at his private Bergisch Gladbach Observatory , Germany. He is the most successful German discoverer of minor planets . [2] [3] German astronomer Minor planets discovered: 687  

#20 Shōhei Suzuki

Shōhei Suzuki ( 鈴木 正平 , Suzuki Shōhei ) is a Japanese astronomer and a discoverer of minor planets . Japanese astronomer Minor planets discovered: 52   [1] see §   List of discovered minor planets In collaboration with Japanese astronomer Masanori Hirasawa , Suzuki discovered 52 numbered minor plane


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Star / Star


#1 Beta Scorpii

Beta Scorpii ( β Scorpii , abbreviated Beta Sco , β Sco ) is a multiple star system in the southern zodiac constellation of Scorpius . It bore the traditional proper name of Acrab / ˈ æ k r æ b / , [8] though the International Astronomical Union now regards that name as applying only to the β Scorpi


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