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langs: 21 мая [ru] / may 21 [en] / 21. mai [de] / 21 mai [fr] / 21 maggio [it] / 21 de mayo [es]

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

Asteroid / Asteroid


#1 List of centaurs (small Solar System bodies)

The following is a list of centaurs , a group of non-resonant small Solar System bodies whose orbit around the Sun lie typically between the orbits of Jupiter and Neptune (5 to 30  AU ). Centaurs are minor planets with characteristics of comets , and often classified as such. The dynamical group is

#2 66391 Moshup

66391 Moshup / ˈ m ɒ ʃ ʌ p / , provisional designation 1999 KW 4 , is a binary asteroid , classified as a near-Earth object and potentially hazardous asteroid of the Aten group , approximately 1.3 kilometers in diameter. It was discovered on 20 May 1999, by Lincoln Near-Earth Asteroid Research (LINE

#3 32226 Vikulgupta

32226 Vikulgupta , provisional designation 2000 OQ 23 , is a stony Flora asteroid from the inner regions of the asteroid belt , approximately 3.5 kilometers in diameter. 32226 Vikulgupta Discovery   [1] Discovered   by LINEAR Discovery   site Lincoln Lab's ETS Discovery   date 23 July 2000 Designati

#4 (529366) 2009 WM1

(529366) 2009 WM 1 , provisional designation 2009 WM 1 , is a sub-kilometer asteroid and near-Earth object of the Apollo group, approximately 280 meters (920 feet) in diameter. [4] After its discovery by the Catalina Sky Survey at the Catalina Station in Arizona, United States, this potentially haza

#5 1304 Arosa

1304 Arosa , provisional designation 1928 KC , is a metallic asteroid from the outer region of the asteroid belt , approximately 40 kilometers in diameter. It was discovered on 21 May 1928, by German astronomer Karl Reinmuth at Heidelberg Observatory in southwest Germany. [15] It was named after the

#6 872 Holda

872 Holda is a minor planet orbiting the Sun . 872 Holda Discovery Discovered   by Max Wolf Discovery   site Heidelberg Discovery   date 21 May 1917 Designations MPC   designation (872) Holda Alternative designations 1917 BZ Orbital characteristics [1] Epoch 31 July 2016 ( JD 2457600.5) Uncertainty

#7 982 Franklina

982 Franklina ( prov. designation : A922 KF or 1922 MD ) is a background asteroid from the outer regions of the asteroid belt , approximately 32 kilometers (20 miles) in diameter. It was discovered on 21 May 1922, by South African astronomer Harry Edwin Wood at the Union Observatory in Johannesburg.

#8 197 Arete

Arete ( minor planet designation : 197 Arete ) is an asteroid in the asteroid belt . It has a very bright surface, even so when compared to other rocky S-type asteroid . 197 Arete Discovery [1] Discovered   by Johann Palisa Discovery   date 21 May 1879 Designations MPC   designation (197) Arete Pron

#9 32145 Katberman

32145 Katberman , provisional designation 2000 LE 30 , is a stony asteroid from the inner regions of the asteroid belt , approximately 4 kilometers in diameter. The asteroid was discovered on 7 June 2000, by the LINEAR team at Lincoln Laboratory's Experimental Test Site in Socorro, New Mexico, Unite

#10 1196 Sheba

1196 Sheba , provisional designation 1931 KE , is a metallic asteroid from the middle region of the asteroid belt , approximately 25 kilometers in diameter. It was discovered on 21 May 1931 by astronomer Cyril Jackson at Johannesburg Observatory , South Africa. [6] 1196 Sheba Discovery [1] Discovere

#11 2010 KZ39

2010 KZ 39 is a trans-Neptunian object orbiting the Sun as a detached object in the outer reaches of the Solar System . The object was first observed on 21 May 2010 by astronomers Andrzej Udalski , Scott Sheppard , M. Szymanski and Chad Trujillo at the Las Campañas Observatory in Chile. [1] [3] 2010

#12 4179 Toutatis

4179 Toutatis , provisional designation 1989 AC , is an elongated, stony asteroid and slow rotator , [11] classified as a near-Earth object and potentially hazardous asteroid of the Apollo asteroid and Alinda asteroid groups, [ citation needed ] approximately 2.5 kilometers in diameter. Discovered b

#13 873 Mechthild

873 Mechthild ( prov. designation : A917 KJ or 1917 CA ) is a dark background asteroid from the central regions of the asteroid belt . It was discovered by German astronomer Max Wolf at the Heidelberg Observatory on 21 May 1917. [1] The primitive P-type asteroid has a rotation period of 11.0 hours a

#14 2010 TK7

2010 TK 7 is a sub-kilometer Near-Earth asteroid and the first Earth trojan discovered; it precedes Earth in its orbit around the Sun . [4] [5] Trojan objects are most easily conceived as orbiting at a Lagrangian point , a dynamically stable location (where the combined gravitational force acts thro

#15 (467336) 2002 LT38

(467336) 2002 LT 38 , is a sub-kilometer asteroid and suspected tumbler , classified as a near-Earth object and potentially hazardous asteroid of the Aten group , approximately 240 meters (790   ft) in diameter. It was discovered on 12 June 2002, by astronomers of the Lincoln Near-Earth Asteroid Res

#16 480 Hansa

Hansa ( minor planet designation : 480 Hansa ), provisional designation 1901 GL , is a stony asteroid and the namesake of the Hansa family located in the central region of the asteroid belt , approximately 56 kilometers (35 miles) in diameter. It was discovered on 21 May 1901, by astronomers Max Wol

#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 2015 KE172

2015 KE 172 , internal designation o5m72 , is a distant resonant trans-Neptunian object on an eccentric orbit in the outermost region of the Solar System , approximately 100 kilometers (60 miles) in diameter. It was first observed on 21 May 2015 by astronomers with the Outer Solar System Origins Sur


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Comet / Comet


#1 C/2010 X1 (Elenin)

Comet C/2010 X1 (Elenin) is an Oort cloud comet discovered by Russian amateur astronomer Leonid Elenin on December 10, 2010, through remote control of the International Scientific Optical Network 's robotic observatory near Mayhill in the U.S. state of New Mexico . The discovery was made using the a

#2 P/2019 LD2 (ATLAS)

P/2019 LD 2 (ATLAS) is a Jupiter-family comet discovered by the Asteroid Terrestrial-impact Last Alert System on 10 June 2019. [6] [7] It was initially reported as the first known Jupiter trojan asteroid to display cometary activity, [8] but its classification as a Jupiter trojan was retracted after

#3 Comet White–Ortiz–Bolelli

Comet White–Ortiz–Bolelli (formal designations: C/1970 K1 , 1970 VI , and 1970f ) was a bright comet which appeared in 1970. It was a member of the Kreutz Sungrazers , a family of comets which resulted from the break-up of a large parent comet several centuries ago. It was already easily visible to

#4 C/2019 Y4 (ATLAS)

C/2019 Y4 (ATLAS) (or Comet ATLAS ) is a comet with a near-parabolic orbit discovered by the ATLAS survey on December 28, 2019. [3] Early predictions based on the brightening rate suggested that the comet could become as bright as magnitude 0 matching the brightness of Vega . [4] It received widespr

#5 C/2017 K2 (PanSTARRS)

C/2017 K2 (PanSTARRS) is an Oort cloud comet with an inbound hyperbolic orbit, discovered in May 2017 at a distance beyond the orbit of Saturn when it was 16   AU (2.4   billion   km) from the Sun. Precovery images from 2013 were located by July. [7] It had been in the constellation of Draco from Ju

#6 132P/Helin–Roman–Alu

132P/Helin–Roman–Alu , also known as Helin-Roman-Alu 2 , is a periodic comet in the Solar System . 132P/Helin-Roman-Alu Discovery Discovered by Eleanor F. Helin Brian P. Roman Jeff Alu Discovery date October 26, 1989 Alternative designations 1989 XVI; 1997 N2 Orbital characteristics A Epoch March 6,


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Galaxy / Galaxy


#1 Messier 96

Messier 96 (also known as M96 or NGC 3368 ) is an intermediate spiral galaxy about 31 million light-years away in the constellation Leo . Spiral galaxy in the constellation Leo Messier 96 ESO 's Very Large Telescope image of Messier 96, also known as NGC 3368. It shows its core displaced from the ce

#2 NGC 6287

NGC 6287 is a globular cluster located in the constellation Ophiuchus . It is designated as VII in the galaxy morphological classification scheme and was discovered by the German-born British astronomer William Herschel on 21 May 1784. It is at a distance of 30,300 light years away from earth. [1] [

#3 Messier 99

Messier 99 or M99 , also known as NGC 4254, is a grand design spiral galaxy in the northern constellation Coma Berenices approximately 15,000,000 parsecs (49,000,000 light-years ) from the Milky Way . [5] It was discovered by Pierre Méchain on 17 March 1781. The discovery was then reported to Charle

#4 Messier 80

Messier 80 (also known as M80 or NGC 6093 ) is a globular cluster in the constellation Scorpius . It was discovered by Charles Messier in 1781, being one of his first discoveries. [9] Globular cluster in the constellation Scorpius Messier 80 A Hubble Space Telescope (HST) image of M80 Observation da

#5 NGC 4603

NGC 4603 is a spiral galaxy located about 107 [2] million light years away in the constellation Centaurus . It is a member of the Centaurus Cluster of galaxies, belonging to the section designated "Cen30". The morphological classification is SA(s)c, [4] which indicates it is a pure spiral galaxy wit


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Institution / Institution


#1 Château de Meudon

Meudon Castle , also known as the Royal Castle of Meudon or Imperial Palace of Meudon, is a French castle located in Meudon in the Hauts-de-Seine department . At the edge of a wooded plateau, the castle offers views of Paris and the Seine , as well as of the Chalais valley. Located between Paris and

#2 Stratospheric Observatory for Infrared Astronomy

The Stratospheric Observatory for Infrared Astronomy ( SOFIA ) was an 80/20 joint project of NASA and the German Aerospace Center (DLR) [1] to construct and maintain an airborne observatory . NASA awarded the contract for the development of the aircraft, operation of the observatory and management o

#3 Lovell Telescope

The Lovell Telescope / ˈ l ʌ v əl / is a radio telescope at Jodrell Bank Observatory , near Goostrey , Cheshire in the north-west of England. When construction was finished in 1957, the telescope was the largest steerable dish radio telescope in the world at 76.2   m (250   ft) in diameter; [1] it i

#4 GREGOR Solar Telescope

GREGOR is a solar telescope , equipped with a 1.5 m primary mirror, [1] located at 2,390 m altitude at the Teide Observatory on Tenerife in the Canary Islands . It replaces the older Gregory Coudé Telescope and was inaugurated on May 21, 2012. [2] [3] First light, using a 1 metre test mirror, was on

#5 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

#6 Observatory Naef Épendes

Observatory Robert A. Naef ( French : Observatoire Robert-A. Naef ) is an astronomical observatory located at Épendes , Canton of Fribourg , Switzerland at 7.13938 degrees east of Greenwich and 46.76236 degrees north latitude. Its parallax constants are   : ρ sin φ' = 0.68632 (Earth radii from the r

#7 History of the Deep Space Network

  This article incorporates public domain material from websites or documents of the National Aeronautics and Space Administration . Observatory Deep Space Network Organization Interplanetary Network Directorate Location California Coordinates 34°12′3″N 118°10′18″W Website Deepspace Network website

#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 Lick Observatory

The Lick Observatory is an astronomical observatory owned and operated by the University of California . It is on the summit of Mount Hamilton , in the Diablo Range just east of San Jose, California , United States. The observatory is managed by the University of California Observatories, with headq

#10 William Miller Sperry Observatory

The William Miller Sperry Observatory , also known simply as the Sperry Observatory , is an astronomical observatory owned by Union County College and operated by Amateur Astronomers, Incorporated . The observatory is located on the property of Union County College on their Cranford, New Jersey camp

#11 Hoober Observatory

J A Jones Hoober Observatory is a privately owned observatory located in South Yorkshire , England near to the villages of Hoober and Wentworth , 4 miles (6.4   km) North-northwest of Rotherham . It can be found about 300 metres (0.19   mi) east of Hoober Stand . The observatory is owned and operate

#12 Max Planck Institute for Solar System Research

The Max Planck Institute for Solar System Research (abbreviation: MPS ; German : Max-Planck-Institut für Sonnensystemforschung ) is a research institute in astronomy and astrophysics located in Göttingen , Germany , where it relocated in February 2014 from the nearby village of Lindau . [1] The expl

#13 Campo Imperatore Near-Earth Object Survey

The CINEOS program ( Campo Imperatore Near-Earth Object Survey ), started in 2001, is dedicated to the discovery and follow-up of near-Earth objects (NEOs), namely asteroids and comets which periodically approach or intersect the Earth's orbit . In particular CINEOS is addressed to the discovery of


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Researcher / Researcher


#1 Jennie McCormick

Jennie Margaret McCormick MNZM , FRASNZ ( née   Brown ; born 1963) is a New Zealand amateur astronomer and asteroid discoverer who conducts astronomical research from the Farm Cove Observatory in Auckland. She discovered the asteroid officially named New Zealand and has contributed to and been invol

#2 Frank Kameny

Franklin Edward Kameny (May 21, 1925   – October 11, 2011) [1] was an American gay rights activist. He has been referred to as "one of the most significant figures" in the American gay rights movement . [2] American gay rights activist (1925–2011) Frank Kameny Kameny in 2010 Born Franklin Edward Kam

#3 Adolphe Hirsch

Adolphe Hirsch (21 May 1830 - 16 April 1901) was a German born, Swiss astronomer and geodesist. [1] [2] Adolphe Hirsch Born 21 May 1830   Halberstadt Died 16 April 1901   (aged 70) Nationality Swiss Academic career Institutions Neuchâtel Observatory University of Neuchâtel Swiss Geodetic Commission

#4 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

#5 Jens Fredrik Schroeter

Jens Fredrik Wilhelm Schroeter (21 May 1857 – 27 April 1927) was a Norwegian astronomer. Norwegian astronomer Jens Fredrik Schroeter Schroeter circa 1895 Born ( 1857-05-21 ) 21 May 1857 Drammen Died 27 April 1927 (1927-04-27) (aged   69) Oslo Citizenship Norwegian Scientific career Fields astrometry

#6 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

#7 Nils Christoffer Dunér

Nils Christoffer Dunér ( Billeberga , Malmöhus län 21 May 1839 – Stockholm 10 November 1914) was a Swedish astronomer . His parents were Nils Dunér and Petronella (née Schlyter). [1] Swedish astronomer Nils Christoffer Dunér Nils Christoffer Dunér (1909) Born 21 May 1839 Billeberga , Malmöhus län Di

#8 Charles Emile Stuyvaert

Charles Émile Stuyvaert (21 May 1851 – 18 November 1908) was a Belgian astronomer. [1] He was a contemporary of Albert Lancaster , Louis Niesten and Jean-Charles Houzeau . [2] Belgian astronomer

#9 Paul Wild (Swiss astronomer)

Paul Wild ( German: [ˈvɪlt] ; 5 October 1925 – 2 July 2014) was a Swiss astronomer and director of the Astronomical Institute of the University of Bern , who discovered numerous comets , asteroids and supernovae . [1] [2] Swiss astronomer Paul Wild Paul Wild at University of Bern in 2006 Born ( 1925

#10 Fiorella Terenzi

Fiorella Terenzi is an Italian-born astrophysicist , author and recording artist who is best known for taking recordings of radio waves from far-away galaxies and turning them into music. She received her doctorate from the University of Milan but is currently based in the United States. Italian ast

#11 Qu Qinyue

Qu Qinyue ( simplified Chinese : 曲钦岳 ; traditional Chinese : 曲欽岳 ; pinyin : Qū Qīnyuè ; Wade–Giles : Ch'ü Ch'in-yüeh ) (born 21 May 1935) is a Chinese astrophysicist and writer. He is a professor and former president of Nanjing University . He is a pioneer of high-energy astrophysics in China, and h

#12 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

#13 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

#14 Alan C. Gilmore

Alan Charles Gilmore (born 1944 in Greymouth , New Zealand ) is a New Zealand astronomer and a discoverer of minor planets and other astronomical objects . [2] [3] New Zealand astronomer For other people of a similar name, see Alan Gilmour (disambiguation) . Asteroids discovered: 42   [1] see §   Li

#15 Cyril Jackson (astronomer)

Cyril V. Jackson (5 December 1903 – February 1988) was a South African astronomer , known for discovering 72 asteroids and a number of comets. South African astronomer Asteroids discovered: 72 1116 Catriona 5 April 1929 1186 Turnera 1 August 1929 1193 Africa 24 April 1931 1194 Aletta 13 May 1931 119

#16 Gottfried Heinsius

Gottfried Heinsius (April, 1709 – May 21, 1769) was a German mathematician, geographer and astronomer. [1] Gottfried Heinsius, engraving, 1754 Illustration about Observationes circa phasin [!] Saturni rotundam from Acta Eruditorum , 1761 Illustration about Diiudicatio [!] casuum determinatorum... fr

#17 Rafael Pacheco

Rafael Pacheco Hernández (born 1954 in Madrid ) is a Spanish astronomer of Catalan origin and a prolific discoverer of asteroids , credited by the Minor Planet Center with the discovery of numerous minor planets mostly in collaboration with astronomer Álvaro López-García . [1] [2] Spanish astronomer

#18 Harry Edwin Wood

Harry Edwin Wood (3 February 1881 – 27 February 1946) was an English astronomer , director of the Union Observatory in Johannesburg , and discoverer of minor planets . [2] [3] Asteroids discovered: 12   [1] 715 Transvaalia 22 April 1911 list 758 Mancunia 18 May 1912 list 790 Pretoria 16 January 1912

#19 Alan Duffy (astronomer)

Alan R Duffy (born 1983) is a professional astronomer and science communicator . He was born in England, raised in Ireland, and is currently based in Australia. He is a professor at the Centre for Astrophysics and Supercomputing at Swinburne University of Technology , and is the Lead Scientist at th

#20 Edward L. G. Bowell

Edward L. G. "Ted" Bowell (born 1943 in London ), is an American astronomer . Bowell was educated at Emanuel School London, University College, London , and the University of Paris . American astronomer He was principal investigator of the Lowell Observatory Near-Earth-Object Search (LONEOS). He has


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Star / Star


#1 Mira

Mira ( / ˈ m aɪ r ə / ), designation Omicron Ceti ( ο Ceti , abbreviated Omicron Cet , ο Cet ), is a red-giant star estimated to be 200–400 light-years from the Sun in the constellation Cetus . Binary star in Cetus For other uses, see Mira (disambiguation) . This article uses bare URLs , which are u

#2 T Scorpii

T Scorpii , or Nova Scorpii 1860, was a nova in the globular cluster Messier 80 (M80). It was discovered on 21 May 1860 by Arthur von Auwers at Koenigsberg Observatory and was independently discovered by Norman Pogson on May 28th at Hartwell observatory. [4] [5] It was at magnitude 7.5 at discovery,

#3 History of supernova observation

The known history of supernova observation goes back to 185 AD, when supernova SN 185 appeared; which is the oldest appearance of a supernova recorded by mankind. Several additional supernovae within the Milky Way galaxy have been recorded since that time, with SN 1604 being the most recent supernov


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