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langs: 3 апреля [ru] / april 3 [en] / 3. april [de] / 3 avril [fr] / 3 aprile [it] / 3 de abril [es]

days: march 31 / april 1 / april 2 / april 3 / april 4 / april 5 / april 6

Asteroid / Asteroid


#1 2013 GM3

2013 GM 3 is a micro- asteroid , classified as near-Earth object of the Aten group , approximately 20 meters in diameter. It was first observed on 3 April 2013, by astronomers of the Mount Lemmon Survey conducted at the Mount Lemmon Observatory near Tucson, Arizona, United States. [2] 2013 GM 3 Disc

#2 List of minor planets and comets visited by spacecraft

The following tables list all minor planets and comets that have been visited by robotic spacecraft . Number of minor planets and comets visited by spacecraft

#3 274 Philagoria

Philagoria ( minor planet designation : 274 Philagoria ) is a typical Main belt asteroid . 274 Philagoria Shape of Philagoria from modeled lightcurve Discovery Discovered   by Johann Palisa Discovery   date 3 April 1888 Designations MPC   designation (274) Philagoria Pronunciation / f ɪ l ə ˈ ɡ ɔːr

#4 562 Salome

Salome ( minor planet designation : 562 Salome ) is a minor planet orbiting the Sun that was discovered by German astronomer Max Wolf on 3 April 1905 from Heidelberg . It is named after Salome , the daughter of Herodias who is referenced in the New Testament . [3] 562 Salome Discovery Discovered   b

#5 (163249) 2002 GT

(163249) 2002 GT is an Apollo asteroid with an absolute magnitude of 18.26. [1] It is a potentially hazardous asteroid as its orbit crosses that of Earth. [3] (163249) 2002 GT Discovery Discovered   by Spacewatch Discovery   site Kitt Peak National Obs. Discovery   date 3 April 2002 Designations MPC

#6 Eris (dwarf planet)

Eris ( minor-planet designation 136199 Eris ) is the most massive and second-largest known dwarf planet in the Solar System . It is a trans-Neptunian object (TNO) in the scattered disk and has a high- eccentricity orbit. Eris was discovered in January 2005 by a Palomar Observatory –based team led by

#7 1354 Botha

1354 Botha , provisional designation 1935 GK , is an exceptionally dark background asteroid from the outer regions of the asteroid belt , approximately 46 kilometers in diameter. It was discovered on 3 April 1935, by South-African astronomer Cyril Jackson at the Union Observatory in Johannesburg. [1

#8 7204 Ondřejov

7204 Ondřejov , provisional designation 1995 GH , is a stony asteroid from the middle region of the asteroid belt , approximately 6 kilometers in diameter. It was discovered on 3 April 1995, by Czech astronomer Petr Pravec at Ondřejov Observatory near Prague, Czech Republic. [8] 7204 Ondřejov Discov

#9 3099 Hergenrother

3099 Hergenrother , provisional designation 1940 GF , is an asteroid from the outer region of the asteroid belt , approximately 15 kilometers in diameter. It was discovered on 3 April 1940, by Finnish astronomer Yrjö Väisälä at Turku Observatory in Southwest Finland, [7] and named after American ast

#10 119 Althaea

Althaea ( minor planet designation : 119 Althaea ) is a main-belt asteroid that was discovered by Canadian-American astronomer J. C. Watson on April 3, 1872, [3] and named after Althaea , the mother of Meleager in Greek mythology . Two occultations by Althaea were observed in 2002, only a month apar

#11 850 Altona

850 Altona ( prov. designation : A916 FG or 1916 Σ24 ) is a large background asteroid , approximately 77 kilometers (48 miles) in diameter, that is located in the outer region of the asteroid belt . It was discovered on 27 March 1916, by Russian astronomer Sergey Belyavsky at the Simeiz Observatory

#12 List of minor planets discovered using the WISE spacecraft

The following is a list of numbered minor planets discovered, co-discovered and re-discovered by the Wide-field Infrared Survey Explorer (WISE), a NASA infrared spaceborne observatory. As of July 2018, the list contains 4093 entries, accredited by the Minor Planet Center as discovered by "WISE". Not

#13 1995 GJ

1995 GJ might be a trans-Neptunian object and/or high-inclination cubewano from the Kuiper belt in the outermost region of the Solar System , and based on the calculated distance and brightness is assumed to be approximately 175 kilometers (110 miles) in diameter. It is a lost minor planet that has

#14 1425 Tuorla

1425 Tuorla , provisional designation 1937 GB , is a stony Eunomian asteroid from the central regions of the asteroid belt , approximately 14 kilometers in diameter. It was discovered on 3 April 1937, by Finnish astronomer Kustaa Inkeri at the Iso-Heikkilä Observatory in Turku, southwestern Finland.

#15 825 Tanina

825 Tanina ( prov. designation : A916 FH or 1916 ZL ) is a stony background asteroid from the region of the Flora family , located in the inner part of the asteroid belt . It was discovered on 27 March 1916, by Russian astronomer Grigory Neujmin at the Simeiz Observatory on Crimea. [1] The elongated

#16 1426 Riviera

1426 Riviera , provisional designation 1937 GF , is a bright asteroid from the central regions of the asteroid belt , approximately 16 kilometers in diameter. Discovered by Marguerite Laugier at the Nice Observatory in 1937, the asteroid was later named for the Côte d'Azur, also known as French Rivi

#17 856 Backlunda

856 Backlunda ( prov. designation : A916 GQ or 1916 Σ30 ) is a dark background asteroid from the inner region of the asteroid belt . It was discovered on 3 April 1916, by Russian astronomer Sergey Belyavsky at the Simeiz Observatory on the Crimean peninsula. [1] The carbonaceous C-type asteroid has

#18 256 Walpurga

Walpurga ( minor planet designation : 256 Walpurga ) is a large Main belt asteroid . It was discovered by Johann Palisa on 3 April 1886 in Vienna and was named after Saint Walburga . 256 Walpurga Discovery Discovered   by Johann Palisa Discovery   date 3 April 1886 Designations MPC   designation (25

#19 854 Frostia

854 Frostia is a main-belt asteroid orbiting the sun . It was discovered in 1916 by Sergei Ivanovich Belyavsky from Simeiz Observatory in Crimea and is named after Edwin Brant Frost , an American astronomer. This asteroid measures approximately 8.4   km (5.2   mi) in diameter . [2] 854 Frostia Disco

#20 2014 MV67

2014 MV 67 (also written 2014 MV67 ) was a lost asteroid with an observation arc less than 1 day. It had an assumed orbital eccentricity [lower-alpha 1] and a very poorly constrained orbit. [1] Depending on the orbit, it could have been a potentially hazardous asteroid , roughly 540 meters (1,770 fe


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Book / Book


#1 Rocket Men

Rocket Men: The Daring Odyssey of Apollo 8 and the Astronauts Who Made Man's First Journey to the Moon is a 2018 nonfiction book by Robert Kurson recounting NASA 's 1968 Apollo 8 mission, which was the first crewed spacecraft to reach the Moon and return safely to Earth. [2] The book is Kurson's fou


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Comet / Comet


#1 Tempel 1

Tempel 1 (official designation: 9P/Tempel ) is a periodic Jupiter-family comet discovered by Wilhelm Tempel in 1867. It completes an orbit of the Sun every 5.5 years. Tempel 1 was the target of the Deep Impact space mission, which photographed a deliberate high-speed impact upon the comet in 2005. I

#2 86P/Wild

86P/Wild (pronounced 86P/Vilt ) is a periodic comet in the Solar System with a current orbital period of 6.84 years. [3] Periodic comet with 6 year orbit 86P/Wild Discovery Discovered by Paul Wild at Zimmerwald Observatory , Switzerland Discovery date April 1980 Orbital characteristics A Epoch 27 Ju

#3 C/2015 V2 (Johnson)

C/2015 V2 (Johnson) is a hyperbolic comet discovered on 3 November 2015 by Jess Johnson ( Catalina Sky Survey ) at an apparent magnitude of 17.1 using a 0.68-meter (27   in) Schmidt–Cassegrain telescope . [1] [2] [3] [4] [5] Its incoming orbit had a Semimajor Axis of 59,200 AU (0.94 light years), bu

#4 C/2007 W1 (Boattini)

C/2007 W1 (Boattini) is a long-period comet discovered on 20 November 2007, by Andrea Boattini at the Mt. Lemmon Survey . [1] At the peak the comet had an apparent magnitude around 5. [5] C/2007 W1 (Boattini) Discovery Discovered by Andrea Boattini Mt. Lemmon Survey ( G96 ) [1] Discovery date 20 Nov


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Galaxy / Galaxy


#1 NGC 4072

NGC 4072 is a lenticular galaxy located 300 million light-years away [2] in the constellation Coma Berenices . [3] The galaxy was discovered by astronomer Ralph Copeland on April 3, 1872 [4] and is a member of the NGC 4065 Group . [5] [6] [7] [8] [9] Galaxy in the constellation Coma Berenices NGC 40

#2 NGC 4221

NGC 4221 is a barred lenticular galaxy located about 75.9 million light-years (23.28 megaparsecs) away [3] in the constellation of Draco . It was discovered on April 3, 1832 by the astronomer John Herschel . [5] NGC 4221 is notable for having an outer ring [6] that surrounds the inner barred central

#3 NGC 2985

NGC 2985 is a spiral galaxy located in the constellation Ursa Major . It is located at a distance of circa 70 million light years from Earth, which, given its apparent dimensions, means that NGC 2985 is about 95,000 light years across. It was discovered by William Herschel on April 3, 1785. [4] Spir

#4 NGC 3147

NGC 3147 is a spiral galaxy located in the constellation Draco . It is located at a distance of circa 130 million light years from Earth, which, given its apparent dimensions, means that NGC 3147 is about 140,000 light years across. It was discovered by William Herschel on April 3, 1785. [2] It is a


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Institution / Institution


#1 Remote Astronomical Society Observatory of New Mexico

The Remote Astronomical Society ( RAS ) Observatory, Mayhill , also known as the New Mexico Skies Observatory ( obs. code H06 [2] ) is a remotely controlled observatory hosted by the New Mexico Skies astronomy hosting company. [3] This article needs additional citations for verification . ( May 2009

#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 List of solar eclipses visible from Russia

This list of solar eclipses visible from Russia enumerates the solar eclipses that have been seen and will be seen in Russia . Lists of solar eclipses Geometry of a total solar eclipse (not to scale) Solar eclipses in antiquity Solar eclipses in the Middle Ages Modern history 16th 17th 18th 19th 20t

#4 Purple Mountain Observatory

The Purple Mountain Observatory ( Chinese : 紫金山天文台 ; pinyin : Zǐjīnshān Tiānwéntái ), also known as Zijinshan Astronomical Observatory is an astronomical observatory located on the Purple Mountain in the east of Nanjing . [lower-alpha 1] Observatory Purple Mountain Observatory Purple Mountain Observ

#5 Dudley Observatory

Dudley Observatory is an astronomical observatory originally located in Albany, New York , and now in Loudonville, New York . It is no longer operating as a scientific observatory, but remains the oldest non-academic institution of astronomical research in America. [ citation needed ] The Observator

#6 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

#7 Royal Observatory of Belgium

The Royal Observatory of Belgium ( French: Observatoire Royal de Belgique , Dutch : Koninklijke Sterrenwacht van België ), has been situated in the Uccle municipality of Brussels ( Belgium ) since 1890. It was first established in Saint-Josse-ten-Noode in 1826 by William I under the impulse of Adolp

#8 Union Observatory

Union Observatory also known as Johannesburg Observatory ( 078 ) is a defunct astronomical observatory in Johannesburg , South Africa that was operated between 1903 and 1971. It is located on Observatory Ridge , the city's highest point at 1,808 metres altitude in the suburb Observatory . [1] [2] De

#9 Shreveport-Bossier Astronomical Society

The Shreveport-Bossier Astronomical Society, Inc. is a 501(c)(3) tax-exempt organization [1] and one of the oldest continuously meeting astronomy clubs in the United States of America. [ citation needed ] Originally named the Shreveport Junior Astronomical Society, it was founded in 1959 by a group

#10 Observatory House

Observatory House was the name of an 18th century observatory established by William and Caroline Herschel in Windsor Street, Slough. After the original building had been demolished, the name was re-applied to a modern office block on the same site which now serves as the headquarters of Slough Boro

#11 Teide Observatory

Teide Observatory ( Spanish : Observatorio del Teide ), IAU code 954 , is an astronomical observatory on Mount Teide at 2,390 metres (7,840   ft) , located on Tenerife , Spain. It has been operated by the Instituto de Astrofísica de Canarias since its inauguration in 1964. It became one of the first

#12 Piszkéstető Station

The Piszkéstető Station or Piszkéstető Mountain Station is an astronomical observatory in Mátraszentimre in Mátra Mountains , about 80 kilometers (50   mi) northeast of Hungary's capital Budapest . It is a station of Konkoly Observatory , first built in 1958. It has the observatory code 461 and 561


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Meteorite / Meteorite


#1 Treysa (meteorite)

The Treysa Meteorite , also known as the Rommershausen Meteorite (both Treysa and Rommershausen are districts of Schwalmstadt ), is an astronomical relic found in a wooded area near the Rommershausen district of Schwalmstadt in northern Hesse , Germany. The meteorite made German astronomical history


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Researcher / Researcher


#1 Alexander A. Gurshtein

Alexander Aronovich Gurshtein ( Russian : Александр Аронович Гурштейн , Aleksandr Aronovich Gurshteyn ; February 21, 1937 – April 3, 2020) was a Soviet / Russian astronomer and historian of science. Alexander Aronovich Gurshtein Born ( 1937-02-21 ) February 21, 1937 Moscow, Russia Died April 3, 2020

#2 Kin Endate

Kin Endate ( 円館 金 , Endate Kin , born December 15, 1960) is a Japanese amateur astronomer who has discovered hundreds of asteroids, most of them in collaboration with Kazuro Watanabe , placing him among the most prolific discoverers of minor planets . [1] Minor planets discovered: 624   [1] see §  

#3 Walter Lewin

Walter Hendrik Gustav Lewin (born January 29, 1936) is a Dutch astrophysicist and retired professor of physics at the Massachusetts Institute of Technology . Lewin earned his doctorate in nuclear physics in 1965 at the Delft University of Technology and was a member of MIT's physics faculty for 43 y

#4 Snježana Kordić

Snježana Kordić ( pronounced   [sɲěʒana kôːrditɕ] ( listen ) ; born 29 October 1964) [1] is a Croatian linguist . [3] In addition to her work in syntax , she has written on sociolinguistics . [2] Kordić is known among non-specialists for numerous articles against the puristic and prescriptive langua

#5 Eugène Joseph Delporte

Eugène Joseph Delporte (10 January 1882   – 19 October 1955) was a Belgian astronomer born in Genappe . [2] [3] Belgian astronomer Minor planets discovered: 66   [1] see §   List of discovered minor planets He discovered a total of sixty-six asteroids . Notable discoveries include 1221 Amor (which l

#6 Masahiro Koishikawa

Masahiro Koishikawa ( 小石川 正弘 , Koishikawa Masahiro , 1952 – 26 August 2020) was a Japanese astronomer . He studied both major and minor planets, and discovered multiple asteroids . [2] Japanese astronomer (1952–2020) Masahiro Koishikawa Born 1952   ( 1952 ) Died August 26, 2020 (2020-08-26) (aged  

#7 William Herschel

Frederick William Herschel [2] [3] KH , FRS ( / ˈ h ɜːr ʃ əl , ˈ h ɛər -/ ; [4] German : Friedrich Wilhelm Herschel ; 15 November 1738   – 25 August 1822) was a German-born British [5] astronomer and composer . He frequently collaborated with his younger sister and fellow astronomer Caroline Hersche

#8 Max Wolf

Maximilian Franz Joseph Cornelius Wolf (21 June 1863 – 3 October 1932) was a German astronomer and a pioneer in the field of astrophotography . He was the chairman of astronomy at the University of Heidelberg and director of the Heidelberg-Königstuhl State Observatory from 1902 until his death in 19

#9 James Craig Watson

James Craig Watson (January 28, 1838 – November 22, 1880) was a Canadian - American astronomer , discoverer of comets and minor planets , director of the University of Michigan's Detroit Observatory in Ann Arbor, and awarded with the Lalande Prize in 1869. [1] [2] Canadian-American astronomer For ot

#10 Kazuro Watanabe

Kazurō Watanabe ( 渡辺 和郎 , Watanabe Kazurō , born May 1, 1955) is a Japanese amateur astronomer and prolific discoverer of minor planets . [2] He was born in Hokkaidō , Japan and is a member of the Astronomical Society of Japan as well as of the Oriental Astronomical Association . Japanese astronomer

#11 Eugene Merle Shoemaker

Eugene Merle Shoemaker (April 28, 1928   – July 18, 1997) was an American geologist . He co-discovered Comet Shoemaker–Levy 9 with his wife Carolyn S. Shoemaker and David H. Levy . This comet hit Jupiter in July 1994: the impact was televised around the world. Shoemaker also studied terrestrial crat

#12 Freimut Börngen

Freimut Börngen ( German: [ˈfʁaɪmuːt ˈbœʁŋən] ; 17 October 1930 – 19 June 2021) was a German astronomer and a prolific discoverer of minor planets . [2] A few sources give his first name wrongly as "Freimuth". The Minor Planet Center credits him as F. Borngen . German astronomer (1930–2021) Minor pl

#13 Pierre Charles Le Monnier

Pierre Charles Le Monnier (23 November 1715 – 3 April 1799) was a French astronomer . His name is sometimes given as Lemonnier . French astronomer For other people with the surname Le Monnier or Lemonnier, see Le Monnier . Pierre Charles Le Monnier. "L'astronome" (The Astronomer) , circa 1777. Oil o

#14 Ulrika Babiaková

Ulrika Babiaková (3 April 1976 – 3 November 2002) was a Slovak astronomer and discoverer of minor planets from Banská Štiavnica , Slovakia. She is credited by the Minor Planet Center with the discovery and co-discovery of 14 asteroids during 1998–2001. [1] [2] [3] Slovak astronomer Aleksandra Born 3

#15 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

#16 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

#17 Johann Palisa

Johann Palisa (6 December 1848 – 2 May 1925) was an Austrian astronomer , born in Troppau , Austrian Silesia , now Czech Republic . [1] He was a prolific discoverer of asteroids , discovering 122 in all, from 136 Austria in 1874 to 1073 Gellivara in 1923. [2] Some of his notable discoveries include

#18 John Broughton

John Broughton (born 1952) [2] is an Australian amateur astronomer and artist. He is among the most prolific discoverers of minor planets worldwide, credited by the Minor Planet Center with more than a thousand discoveries made between 1997 and 2008. [1] His observations are done at Reedy Creek Obse

#19 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

#20 Nobuhiro Kawasato

Nobuhiro Kawasato ( 川里 信弘 , Kawasato Nobuhiro ) is a Japanese astronomer credited by the Minor Planet Center with the discovery of 105 asteroids he made partially in collaboration with astronomer Tsutomu Hioki at Okutama Observatory ( 877 ), Japan, between 1988 and 2000. [1] [2] Japanese astronomer


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Star / Star


#1 Tabby's Star

Tabby's Star (also known as Boyajian's Star and WTF Star , and designated KIC 8462852 in the Kepler Input Catalog ) is an F-type main-sequence star in the constellation Cygnus approximately 1,470 light-years (450 parsecs ) from Earth. Unusual light fluctuations of the star, including up to a 22% dim


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