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langs: 21 февраля [ru] / february 21 [en] / 21. februar [de] / 21 février [fr] / 21 febbraio [it] / 21 de febrero [es]

days: february 18 / february 19 / february 20 / february 21 / february 22 / february 23 / february 24

Asteroid / Asteroid


#1 (175706) 1996 FG3

(175706) 1996 FG 3 is a carbonaceous asteroid and binary system , [4] classified as near-Earth object and potentially hazardous asteroid of the Apollo group, approximately 1.7 kilometers (1.1 miles) in diameter. The primary has a spheroidal shape. Its minor-planet moon measures approximately 490 met

#2 2939 Coconino

2939 Coconino , provisional designation 1982 DP , is a stony Nysian asteroid from the inner regions of the asteroid belt , approximately 6 kilometers in diameter. It was discovered on 21 February 1982, by American astronomer Edward Bowell at Lowell's Anderson Mesa Station in Flagstaff, United States

#3 3752 Camillo

3752 Camillo is an inclined asteroid , classified as near-Earth object of the Apollo group , approximately 2.3 kilometers (1.4 miles) in diameter. It was discovered on 15 August 1985, by astronomers Eleanor Helin and Maria Barucci using a 0.9-metre (35   in) telescope at the CERGA Observatory in Cau

#4 3406 Omsk

3406 Omsk , provisional designation 1969 DA , is a background asteroid from the central regions of the asteroid belt , approximately 15 kilometers (9.3 miles) in diameter. It was discovered on 21 February 1969, by Soviet astronomer Bella Burnasheva at the Crimean Astrophysical Observatory on the Cri

#5 1378 Leonce

1378 Leonce , provisional designation 1936 DB , is a dark Nysian asteroid from the inner regions of the asteroid belt , approximately 19 kilometers in diameter. It was discovered on 21 February 1936, by Belgian astronomer Fernand Rigaux at the Royal Observatory of Belgium in Uccle, who named it afte

#6 1803 Zwicky

1803 Zwicky , prov. designation : 1967 CA , is a stony Phocaea asteroid and binary system from the inner regions of the asteroid belt , approximately 10 kilometers (6.2 miles) in diameter. It was discovered on 6 February 1967, by Swiss astronomer Paul Wild at Zimmerwald Observatory near Bern, Switze

#7 4318 Baťa

4318 Baťa , provisional designation 1980 DE 1 , is a dark background asteroid from the outermost regions of the asteroid belt , approximately 27 kilometers (17 miles) in diameter. It was discovered on 21 February 1980, by astronomer Zdeňka Vávrová at the Kleť Observatory in the Czech Republic. [1] T

#8 818 Kapteynia

818 Kapteynia is a minor planet orbiting the Sun . This asteroid is named for the Dutch astronomer Jacobus Kapteyn . 818 Kapteynia Discovery Discovered   by Max Wolf Discovery   site Heidelberg Observatory Discovery   date 21 February 1916 Designations MPC   designation (818) Kapteynia Pronunciation

#9 2018 AG37

2018 AG 37 (nicknamed FarFarOut ) is a distant trans-Neptunian object and centaur that was discovered 132.2   ±   1.5   AU (19.78   ±   0.22   billion   km) from the Sun, [8] farther than any other currently observable known object in the Solar System. [3] [9] Imaged in January 2018 during a search

#10 596 Scheila

Scheila ( minor planet designation : 596 Scheila ) is a main-belt asteroid [1] and main-belt comet [2] orbiting the Sun . It was discovered on 21 February 1906 by August Kopff from Heidelberg . [1] Kopff named the asteroid after a female English student with whom he was acquainted. [5] Main-belt ast

#11 2010 GZ60

2010 GZ 60 was originally estimated by JPL to be a near-Earth asteroid approximately 2 kilometers (1.2 miles) in diameter. [4] But is now known to be an asteroid from the inner region of the asteroid belt that does not get closer than 1.5   AU (220   million   km ) to Earth. [2] Asteroid 2010 GZ 60

#12 586 Thekla

Thekla ( minor planet designation : 586 Thekla ) is a minor planet orbiting the Sun . It was named after Saint Thecla of the first century. The name may have been inspired by the asteroid's provisional designation 1906 TC . 586 Thekla Discovery Discovered   by M. F. Wolf Discovery   site Heidelberg

#13 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

#14 3822 Segovia

3822 Segovia ( prov. designation : 1988 DP 1 ) is a stony Flora asteroid from the inner regions of the asteroid belt . It was discovered by Japanese astronomer Tsutomu Seki at Geisei Observatory in Kōchi, Japan, on 21 February 1988. [6] The presumed S-type asteroid has a rotation period of 11.0 hour

#15 1100 Arnica

1100 Arnica / ˈ ɑːr n ɪ k ə / , provisional designation 1928 SD , is a Koronian asteroid from the outer regions of the asteroid belt , approximately 17 kilometers in diameter. It was discovered by Karl Reinmuth at the Heidelberg Observatory in 1928 and named after the herbaceous plant Arnica (aster;

#16 99942 Apophis

99942 Apophis is a near-Earth asteroid and potentially hazardous asteroid with a diameter of 370 metres (1,210 feet) that caused a brief period of concern in December 2004 when initial observations indicated a probability up to 2.7% that it would hit Earth on April   13, 2029. Additional observation


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Comet / Comet


#1 C/2017 T1 (Heinze)

C/2017 T1 (Heinze) is a near parabolic comet that passed closest to Earth on January 4, 2018, at a distance of 0.22 AU. It was discovered on 10/2/2017 by Ari Heinze of the University of Hawaiʻi . Perihelion is on February 21, 2018, and it is expected peak magnitude about 8.8. [1] C/2017 T1 (Heinze)

#2 39P/Oterma

39P/Oterma is a currently inactive periodic comet in the Solar System with an orbital period of nearly 20 years. The size of its nucleus is not known. Periodic comet with 19 year orbit 39P/Oterma Discovery Discovered by Liisi Oterma Discovery date 8 April 1943 Alternative designations 1942 VII; 1950


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Galaxy / Galaxy


#1 NGC 2397

NGC 2397 is a flocculent spiral galaxy [7] located in the southern Volans constellation , about one degree to the SSE of Delta Volantis . [8] English astronomer John Herschel discovered the galaxy on February 21, 1835. [9] It is located at a distance of approximately 69   million light years from th


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Institution / Institution


#1 Oak Ridge Observatory

The Oak Ridge Observatory ( ORO , code: 801 ), also known as the George R. Agassiz Station , is located at 42 Pinnacle Road, Harvard, Massachusetts . It was operated by the Center for Astrophysics | Harvard & Smithsonian as a facility of the Smithsonian Astrophysical Observatory (SAO) from 1933 unti

#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 Santa Lucia Stroncone Astronomical Observatory

The Santa Lucia Stroncone Astronomical Observatory ( Italian : Osservatorio Astrometrico Santa Lucia Stroncone ) is an astronomical observatory located at 350 metres (1,150   ft) altitude in Stroncone , near the city of Terni , in Umbria , north central Italy. Minor planets discovered: 55   [1] see

#4 Farpoint Observatory

Farpoint Observatory is an astronomical observatory owned and operated by the Northeast Kansas Amateur Astronomers' League , or NEKAAL . It is located on the grounds of Mission Valley High School at Eskridge , near Auburn, Kansas , approximately 30 miles (48   km) southwest of Topeka , Kansas , Unit

#5 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

#6 Macarthur Astronomy Forum

Macarthur Astronomy Forum is a monthly public forum organised by Macarthur Astronomical Society , providing leading national and international professional astronomers with a platform to address the Forum on topics of astronomical interest; also providing members of the Society and the general publi

#7 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


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Meteorite / Meteorite


#1 HD 209458 b

HD 209458 b , also nicknamed Osiris [2] after the Egyptian god , is an exoplanet that orbits the solar analog HD 209458 in the constellation Pegasus , some 159 light-years (49 parsecs ) from the Solar System . The radius of the planet's orbit is 0.047   AU (7.0   million   km ; 4.4   million   mi )

#2 HD 189733 b

HD 189733 b is an exoplanet approximately 64.5 light-years (19.8   pc ) away [3] from the Solar System in the constellation of Vulpecula . Astronomers in France discovered the planet orbiting the star HD 189733 on October 5, 2005, by observing its transit across the star's face. [1] With a mass 16.2

#3 MOA-2009-BLG-387Lb

MOA-2009-BLG-387Lb is an exoplanet in the orbit of the red dwarf MOA-2009-BLG-387L . Its discovery was announced on February 21, 2011, making it the eleventh planet discovered using gravitational microlensing . The planet is thought to be over twice the mass of Jupiter and to have an orbit 80 percen


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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 Lyudmila Karachkina

Lyudmila Georgievna Karachkina ( Russian : Людмила Георгиевна Карачкина , born 3 September 1948, Rostov-on-Don ) is an astronomer and discoverer of minor planets . [2] Ukrainian astronomer Minor planets discovered: 130   [1] see §   List of discovered minor planets In 1978 she began as a staff astro

#3 Karlis Kaufmanis

Kārlis Kaufmanis (February 21, 1910, Riga, Latvia – June 21, 2003, Clearwater, Florida ) was a Latvian-American astronomer. [1] He is noted for his theory, on which he delivered a public lecture more than a thousand times, that the Star of Bethlehem was a conjunction of the planets Jupiter and Satur

#4 Ian P. Griffin

Ian P. Griffin (born 1966) is a New Zealand astronomer , discoverer of minor planets and a public spokesman upon scientific matters. He is currently the Director of Otago Museum , Dunedin , New Zealand. Griffin was the CEO of Science Oxford , in Oxford, United Kingdom, and the former head of public

#5 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

#6 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

#7 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

#8 James L. Hilton

James Lindsay Hilton (born February 21, 1957) has been an astronomer at the United States Naval Observatory since 1986. [1] In 1999 he published a new set of ephemerides for 15 of the largest asteroids for use in the Astronomical Almanac . [2] American astronomer

#9 Marc Buie

Marc William Buie ( / ˈ b uː i / ; born 1958) is an American astronomer and prolific discoverer of minor planets who works at the Southwest Research Institute in Boulder, Colorado in the Space Science Department. [1] Formerly he worked at the Lowell Observatory in Flagstaff, Arizona, and was the Sen

#10 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

#11 Mary Rosse

The Rt Hon. Mary Parsons, Countess of Rosse ( née Mary Field) (14 April 1813 – 1885), was a British Irish amateur astronomer , architect, furniture designer, and pioneering photographer. Often known simply as Mary Rosse , she was one of the early practitioners of making photographs from waxed-paper

#12 Fernand Rigaux

Fernand Rigaux (1905 – 21 September 1962) was a Belgian astronomer and observer of variable stars , minor planets and comets at the Royal Observatory at Uccle, Belgium . [2] [3] Belgian astronomer Minor planets discovered: 8   [1] 1292 Luce 17 September 1933 MPC 1378 Leonce 21 February 1936 MPC 1458

#13 Gunnar Malmquist

Karl Gunnar Malmquist (21 February 1893 – 27 June 1982) was a Swedish astronomer . Swedish astronomer Not to be confused with the Swedish economist Sten Malmquist . For other uses, see Malmquist (disambiguation) .

#14 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

#15 Antonín Mrkos

Antonín Mrkos ( Czech pronunciation: [ˈantoɲiːn ˈmr̩kos] ) (27 January 1918, Střemchoví – 29 May 1996, Prague ) was a Czech astronomer . Czech astronomer Antonín Mrkos Minor planets discovered: 274   [1] see §   List of discovered minor planets

#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 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

#18 Stephen Carkeek

Stephen James Carkeek (12 April 1815 – 27 November 1878) was a New Zealand civil servant, the colony's first Inspector of Customs, and the builder of the oldest-surviving observatory in the country. Stephen Carkeek Carkeek in about 1865 Born Stephen James Carkeek ( 1815-04-12 ) 12 April 1815 Swansea

#19 August Kopff

August Kopff (February 5, 1882 – April 25, 1960) was a German astronomer and discoverer of several comets and asteroids . German astronomer August Kopff Minor planets discovered: 68   [1] see §   List of discovered minor planets Kopff studied and worked in Heidelberg, getting his PhD there in 1906 a

#20 Charles Piazzi Smyth

Charles Piazzi Smyth FRSE FRS FRAS FRSSA (3 January 1819 – 21 February 1900) was an Italian-born British astronomer who was Astronomer Royal for Scotland from 1846 to 1888; he is known for many innovations in astronomy and, along with his wife Jessica Duncan Piazzi Smyth , his pyramidological and me


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Star / Star


#1 SCP 06F6

SCP 06F6 is (or was) an astronomical object of unknown type, discovered on 21 February 2006 in the constellation Boötes [1] during a survey of galaxy cluster CL 1432.5+3332.8 with the Hubble Space Telescope 's Advanced Camera for Surveys Wide Field Channel. [2] Astronomical object discovered in 2006

#2 MOA-2009-BLG-387L

MOA-2009-BLG-387L is a red dwarf in the Sagittarius constellation that is host to the planet MOA-2009-BLG-387Lb . The star is estimated to be nearly 20,000 light years away and approximately one fifth the mass of the Sun, although large confidence intervals exist, reflecting the uncertainties in bot


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