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langs: 20 января [ru] / january 20 [en] / 20. januar [de] / 20 janvier [fr] / 20 gennaio [it] / 20 de enero [es]

days: january 17 / january 18 / january 19 / january 20 / january 21 / january 22 / january 23


Asteroid / Asteroid


#1 1929 Kollaa

1929 Kollaa , provisional designation 1939 BS , is a stony Vestian asteroid from the inner regions of the asteroid belt , approximately 7 kilometers in diameter. It was discovered by Finnish astronomer Yrjö Väisälä at Turku Observatory in Southwest Finland, on 20 January 1939. [9] The asteroid was n

#2 1163 Saga

1163 Saga , provisional designation 1930 BA , is a background asteroid from the outer regions of the asteroid belt , approximately 32 kilometers in diameter. It was discovered on 20 January 1930, by astronomer Karl Reinmuth at the Heidelberg-Königstuhl State Observatory in southwest Germany. [12] Th

#3 2020 UA

2020 UA is a tiny near-Earth asteroid around 5–12 metres (16–39   ft) across that passed within 46,100   km (28,600   mi) of Earth on 21 October 2020 at 02:00 UT . [5] Near earth asteroid 2020 UA Discovery   [1] [2] Discovered   by Mount Lemmon Survey Discovery   site Mt. Lemmon Obs. Discovery   dat

#4 1534 Näsi

1534 Näsi , provisional designation 1939 BK , is a carbonaceous asteroid from the middle region of the asteroid belt , approximately 20 kilometers in diameter. 1534 Näsi Shape model of Näsi from its lightcurve Discovery [1] Discovered   by Y. Väisälä Discovery   site Turku Obs. Discovery   date 20 J

#5 1040 Klumpkea

1040 Klumpkea , provisional designation 1925 BD , is a Tirela asteroid from the outer regions of the asteroid belt , approximately 23 kilometers (14 miles) in diameter. It was discovered on 20 January 1925, by Russian–French astronomer Benjamin Jekhowsky at the Algiers Observatory in North Africa. [

#6 2017 XO2

2017 XO 2 , also written 2017 XO2 , is a sub-kilometer asteroid and near-Earth object of the Apollo group approximately 110 meters (360 feet) in diameter. The asteroid was discovered by Pan-STARRS in December 2017, [1] after it already had approached Earth at 0.051   AU (7,600,000   km ) or 20 lunar

#7 1559 Kustaanheimo

1559 Kustaanheimo , provisional designation 1942 BF , is a stony asteroid from the inner regions of the asteroid belt , approximately 11 kilometers in diameter. It was discovered on 20 January 1942, by Finnish astronomer Liisi Oterma at the Iso-Heikkilä Observatory near Turku in southwest Finland. [

#8 2018 BF3

2018 BF 3 is a micro- asteroid , classified as a near-Earth object of the Apollo group , approximately 20 meters (70   ft) in diameter. It was first observed on 20 January 2018, by astronomers of the Catalina Sky Survey at Mount Lemmon Observatory in Arizona, United States, [1] the day after the clo

#9 2020 PN1

2020 PN 1 is a sub-kilometer asteroid , classified as a near-Earth object of the Aten group , that is a temporary horseshoe companion to the Earth . There are dozens of known Earth horseshoe librators, some of which switch periodically between the quasi-satellite and the horseshoe co-orbital states.

#10 2020 VT1

2020 VT 1 is a small asteroid , classified as a near-Earth object of the Amor group , that is a temporary horseshoe companion to Mars . [4] 2020 VT 1 Discovery   [1] Discovered   by Pan-STARRS 1 Discovery   site Haleakalā Obs. Discovery   date 10 November 2020 Designations MPC   designation 2020 VT

#11 2013 BL76

2013 BL 76 is a trans-Neptunian object and centaur [4] from the scattered disk and Inner Oort cloud approximately 30 kilometers in diameter. Trans-Neptunian object 2013 BL 76 The orbits of some of the most distant minor planets, 2013 BL 76 at top left Discovery [1] [2] [3] Discovered   by Mt. Lemmon

#12 924 Toni

924 Toni ( prov. designation : A919 UF or 1919 GC ) is a large background asteroid , approximately 80 kilometers (50 miles) in diameter, from the outer regions of the asteroid belt . It was discovered on 20 October 1919, by German astronomer Karl Reinmuth at the Heidelberg-Königstuhl State Observato

#13 2013 BS45

2013 BS 45 (also written 2013 BS45 ) is a horseshoe companion to the Earth like 3753 Cruithne . [6] Like Cruithne, it does not orbit the Earth in the normal sense and at times it is on the other side of the Sun, yet it still periodically comes nearer to the Earth in sort of halo orbit before again d

#14 3960 Chaliubieju

3960 Chaliubieju , provisional designation 1955 BG , is a stony asteroid from the central regions of the asteroid belt , approximately 9 kilometers in diameter. It was discovered on 20 January 1955, by astronomers at the Purple Mountain Observatory in Nanjing, China. [10] The asteroid was named afte

#15 163693 Atira

163693 Atira / ə ˈ t ɪr ə / , provisional designation 2003 CP 20 , is a stony asteroid , dwelling in the interior of Earth's orbit. It is classified as a near-Earth object . Atira is a binary asteroid , a system of two asteroids orbiting their common barycenter . The primary component with a diamete

#16 3103 Eger

3103 Eger is an Apollo and Mars-crosser asteroid that was discovered in 1982, by Miklós Lovas . It was named after the city of Eger , Hungary . It has an albedo of 0.64, [1] making it a highly reflective asteroid. 3103 Eger Shape model of Eger from its lightcurve Discovery Discovered   by M. Lovas D

#17 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

#18 2018 CC

2018 CC is a micro- asteroid , classified as a near-Earth object of the Apollo group , approximately 20 meters (70   ft) in diameter. Its official first observation was made by the Catalina Sky Survey at Mount Lemmon Observatory , Arizona, United States, on 4 February 2018. [1] Two days later, the a

#19 355 Gabriella

Gabriella ( minor planet designation : 355 Gabriella ) is a typical Main belt asteroid . 355 Gabriella A three-dimensional model of 355 Gabriella based on its light curve Discovery Discovered   by Auguste Charlois Discovery   date 20 January 1893 Designations MPC   designation (355) Gabriella Named

#20 1558 Järnefelt

1558 Järnefelt , provisional designation 1942 BD , is a carbonaceous asteroid from the outer region of the asteroid belt , approximately 65 kilometers in diameter. 1558 Järnefelt Discovery [1] Discovered   by L. Oterma Discovery   site Turku Obs. Discovery   date 20 January 1942 Designations MPC   d


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Comet / Comet


#1 Comet McNaught

Comet McNaught , also known as the Great Comet of 2007 and given the designation C/2006 P1 , is a non-periodic comet discovered on 7 August 2006 by British-Australian astronomer Robert H. McNaught using the Uppsala Southern Schmidt Telescope . [4] It was the brightest comet in over 40 years, and was

#2 P/2011 NO1 (Elenin)

P/ 2011 NO 1 (Elenin) is a periodic comet with a preliminary orbital period estimated at 13   ±   0.16   years. [4] It came to perihelion (closest approach to the Sun) around 20 January 2011 at 1.2   AU from the Sun. [4] The orbit is preliminary as it has only been observed over an observation-arc o

#3 276P/Vorobjov

276P/Vorobjov (previously P/2012 T7 (Vorobjov) ) is a Jupiter-family comet discovered on 15 October 2012 by Tomáš Vorobjov on three 120-s images taken remotely using the 0.81-m f/7 Ritchey-Chretien Schulman Telescope located at the Mt. Lemmon SkyCenter via the Sierra Stars Observatory Network in the

#4 68P/Klemola

68P/Klemola or Klemola's Comet is a periodic comet , which belongs to Jupiter 's comet family, that was discovered in 1965 by American astronomer Arnold Richard Klemola   [ de ] in Argentinian Yale-Columbia Southern Station . [2] Its orbital period is 10.82 years. [2] Periodic comet with 11 year orb


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Galaxy / Galaxy


#1 Messier 82

Messier 82 (also known as NGC 3034 , Cigar Galaxy or M82 ) is a Starburst galaxy approximately 12 million light-years away in the constellation Ursa Major . A member of the M81 Group , it is about five times more luminous than the Milky Way and has a center one hundred times more luminous. [7] The s

#2 NGC 2293

NGC 2293 is a lenticular galaxy located in the constellation Canis Major . It is located at a distance of circa 100 million light years from Earth, which, given its apparent dimensions, means that NGC 2293 is about 160,000 light years across. It was discovered by John Herschel on January 20, 1835. [


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Institution / Institution


#1 Stamford Museum & Nature Center

The Stamford Museum & Nature Center , located in Stamford, Connecticut , is an art, history, nature, and agricultural sciences museum . The property covers 118 acres (ca. 48 hectares) beginning about half a mile north of the Merritt Parkway . It was originally a private estate. Stamford Museum & Nat

#2 Siding Spring Observatory

Siding Spring Observatory near Coonabarabran, New South Wales , Australia, part of the Research School of Astronomy & Astrophysics (RSAA) at the Australian National University (ANU), incorporates the Anglo-Australian Telescope along with a collection of other telescopes owned by the Australian Natio

#3 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

#4 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

#5 Troll Satellite Station

Troll Satellite Station ( Norwegian : Troll satellittstasjon ), commonly abbreviated TrollSat , is a satellite ground station located at Troll in Queen Maud Land , Antarctica . The earth station is owned by Kongsberg Satellite Services (KSAT), a joint venture between the Kongsberg Group and the Norw

#6 Starlink Project

The Starlink Project , referred to by users as Starlink and by developers as simply The Project , was a UK astronomical computing project which supplied general-purpose data reduction software. Until the late 1990s, it also supplied computing hardware and system administration personnel to UK astron


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Meteorite / Meteorite


#1 Angra dos Reis meteorite

The Angra dos Reis meteorite is the type specimen of the angrite group. It was observed when it fell to earth in 1869. [1] Meteorite angra dos Reis Angra dos Reis Type Achondrite Group Angrite Composition Fassaite (93%) Country Brazil Region Angra dos Reis Coordinates 22°58′S 44°19′W Observed fall Y

#2 HD 45350 b

HD 45350 b is an extrasolar planet located approximately 160 light-years away in the constellation of Auriga . It has a minimum mass about 1.79 times that of Jupiter . The mean distance of the planet from the star is more than the distance between Mars and the Sun , but the eccentricity of the orbit


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Researcher / Researcher


#1 Liisi Oterma

Liisi Oterma ( Finnish pronunciation:   [ˈliːsi ˈʔotermɑ] ; 6 January 1915 – 4 April 2001) was a Finnish astronomer , the first woman to get a Ph.D. degree in astronomy in Finland. [1] Finnish astronomer Liisi Oterma Born January 6, 1915 Turku Died April 4, 2001 Turku Scientific career Fields Astron

#2 Chandra Wickramasinghe

Nalin Chandra Wickramasinghe MBE (born 20 January 1939) is a Sri Lankan -born British mathematician, astronomer [1] and astrobiologist of Sinhalese ethnicity. His research interests include the interstellar medium , infrared astronomy , light scattering theory, applications of solid-state physics to

#3 Ladislav Brožek

Ladislav Brožek (born 1952) is a Slovak astronomer . [2] At the Bohemian Kleť Observatory , he discovered a total of 23 minor planets between 1979 and 1982, as credited by the Minor Planet Center . [1] Slovak astronomer Minor planets discovered: 23   [1] see §   List of discovered minor planets One

#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 Florian Goebel

Karl Florian Goebel (18 October 1972 — 10 September 2008) was a German astrophysicist attached to the Max Planck Institute for Physics in Munich . He had also been a member of DESY , a German-based research center that develops and runs several particle accelerators and detectors , most notably the

#6 Ľubor Kresák

Ľubor Kresák (23 August 1927 in Topoľčany – 20 January 1994 in Bratislava ) was a Slovak astronomer . [1] This article needs additional citations for verification . ( June 2015 ) He discovered two comets : the periodic comet 41P/Tuttle-Giacobini-Kresak and the non-periodic C/1954 M2 (Kresak-Peltier)

#7 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

#8 John V. McClusky

John V. McClusky is an American astronomer . He is a prolific discoverer of asteroids . [2] American astronomer Minor planets discovered: 156   [1] see §   List of discovered minor planets

#9 Lodovico delle Colombe

Lodovico delle Colombe (1565(?) – after 1623) was an Italian Aristotelian scholar, famous for his battles with Galileo Galilei in a series of controversies in physics and astronomy. [1] Italian scholar Frontespiece of Lodovico delle Colombe's Discourse on the Supernova of 1604

#10 Phil Plait

Philip Cary Plait (born September 30, 1964), [1] also known as The Bad Astronomer , is an American astronomer , skeptic , and popular science blogger. Plait has worked as part of the Hubble Space Telescope team, images and spectra of astronomical objects, as well as engaging in public outreach advoc

#11 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

#12 Asghar Qadir

Asghar Qadir ( Urdu : اصغر قادر ‎ born 23 July 1946) HI , SI , FPAS , is a Pakistani mathematician and a prominent cosmologist , specialised in mathematical physics and physical cosmology . He is considered one of the top mathematicians in Pakistan. He served as the chairman of the Mathematics Depar

#13 Jaume Nomen

Jaume Nomen Torres (also: Jaime Nomen ; born June 23, 1960 in Tortosa , Catalonia) is a Spanish oral and maxillofacial surgeon , amateur astronomer and discoverer of numerous minor planets . He is of Catalan origin and became publicly known for the discovery of the near-Earth asteroid 2012 DA 14 (la

#14 Ruby Payne-Scott

Ruby Violet Payne-Scott , BSc (Phys) MSc DipEd (Syd) (28 May 1912 – 25 May 1981) was an Australian pioneer in radiophysics and radio astronomy , and was one of two Antipodean women pioneers in radio astronomy and radio physics at the end of the second world war, Ruby Payne-Scott the Australian and E

#15 James William Grant (astronomer)

James William Grant FRSE FRAS , 3rd Laird of Wester Elchies (1788–1865) was a Scottish astronomer and landowner. On 23 July 1844 he was the first person to observe and record the existence of the star Antares B . [1] Scottish astronomer

#16 Alexander Durie Russell

Alexander Durie Russell FRSE FRAS (1872 – 1955) was a 20th-century Scottish mathematician, schoolmaster and amateur astronomer. He was President of the Edinburgh Mathematical Society 1915/16.

#17 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

#18 Michel Lefrançois de Lalande

Michel Lefrançois de Lalande (21 April 1766 – 8 April 1839) was a French astronomer. French astronomer (1766–1839) Michel Lefrançois de Lalande Portrait at physionotrace of Michel Lefrançois de Lalande.

#19 Grote Reber

Grote Reber (December 22, 1911 – December 20, 2002) was an American pioneer of radio astronomy , which combined his interests in amateur radio and amateur astronomy . He was instrumental in investigating and extending Karl Jansky 's pioneering work, and conducted the first sky survey in the radio fr

#20 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


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Star / Star


#1 GRS 1124-683

The gamma-ray and X-ray source GRS 1124-683 , discovered by the Granat mission and Ginga , is a system containing a black hole candidate. The system also goes by the name X-ray Nova Muscae 1991 or GU Muscae . These two orbiting X-ray telescopes discovered the system when the system produced an outbu

#2 SN 2005cs

SN 2005cs was a supernova in the spiral galaxy M51 , [3] known as the Whirlpool Galaxy. It was a type II-P core-collapse supernova, discovered June 28, 2005 by Wolfgang Kloehr, a German amateur astronomer. [5] The event was positioned at an offset of 15 ″ west and 78″ south of the galactic nucleus o


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