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langs: 23 февраля [ru] / february 23 [en] / 23. februar [de] / 23 février [fr] / 23 febbraio [it] / 23 de febrero [es]

days: february 20 / february 21 / february 22 / february 23 / february 24 / february 25 / february 26

Asteroid / Asteroid


#1 1998 DK36

1998 DK 36 is a 30-meter sized asteroid and near-Earth object that is possibly the first Apohele asteroid (Atira) – an asteroid that is always closer to the Sun than Earth – detected. It was first observed on 23 February 1998, by David J. Tholen at Mauna Kea Observatory , Hawaii, but is now consider

#2 Lost minor planet

A minor planet is " lost " when today's observers cannot find it, because its location is too uncertain to target observations. This happens if the orbital elements of a minor planet are not known accurately enough, typically because the observation arc for the object is too short, or too few observ

#3 1313 Berna

1313 Berna , provisional designation 1933 QG , is a background asteroid and synchronous binary system from the Eunomian region in the central asteroid belt , approximately 14 kilometers (8.7 miles) in diameter. It was discovered on 24 August 1933, by Belgian astronomer Sylvain Arend at the Uccle Obs

#4 2015 AZ43

2015 AZ 43 (also written 2015 AZ43 ) is an Apollo near-Earth asteroid roughly 70 meters in diameter. On 10 February 2015 with a 29.5-day observation arc , it showed a 1 in 5,880 chance of impacting Earth on 27 February 2107. [3] However, the NEODyS nominal best-fit orbit shows that 2015 AZ 43 will b

#5 8815 Deanregas

8815 Deanregas , provisional designation 1984 DR , is a Florian asteroid from the inner regions of the asteroid belt , approximately 4.5 kilometers (2.8 miles) in diameter. It was discovered on 23 February 1984, by Belgian astronomer Henri Debehogne at ESO's La Silla Observatory in northern Chile. [

#6 904 Rockefellia

904 Rockefellia ( prov. designation : A918 UC or 1918 EO ) is a dark and large background asteroid from the outer regions of the asteroid belt , that measures approximately 59 kilometers (37 miles) in diameter. It was discovered on 29 October 1918, by German astronomer Max Wolf at the Heidelberg-Kön

#7 734 Benda

734 Benda ( prov. designation : A912 TF or 1912 PH ) is a large background asteroid from the outer regions of the asteroid belt , approximately 70 kilometers (43 miles) in diameter. It was discovered by Austrian astronomer Johann Palisa at the Vienna Observatory on 11 October 1912. [1] For its size,

#8 399 Persephone

Persephone ( minor planet designation : 399 Persephone ) is a main belt asteroid . It was discovered by German astronomer Max Wolf on 23 February 1895 in Heidelberg . [4] 399 Persephone A three-dimensional model of 399 Persephone based on its light curve Discovery Discovered   by Max Wolf Discovery

#9 2067 Aksnes

2067 Aksnes , provisional designation 1936 DD , is a rare-type Hildian asteroid from the outermost region of the asteroid belt , approximately 44 kilometers in diameter. The asteroid was discovered on 23 February 1936, by Finnish astronomer Yrjö Väisälä at Turku Observatory in Southwest Finland. [9]

#10 742 Edisona

742 Edisona is a minor planet orbiting the Sun that was discovered by German astronomer Franz Kaiser on February 23, 1913. It was named for inventor Thomas Edison . [2] This asteroid is orbiting 3.01   AU with a period of 5.22 years and an eccentricity of 0.119. The orbital plane is inclined at an a

#11 74503 Madola

74503 Madola , provisional designation 1999 DN 4 , is a background asteroid from the outer region of the asteroid belt , approximately 4.5 kilometers in diameter. It was discovered on 23 February 1999, by Canadian astronomer Denis Bergeron at the Val-des-Bois Observatory in Quebec, Canada. The aster

#12 268 Adorea

268 Adorea is a very large main belt asteroid, about 140   km in width. [2] It was discovered by A. Borrelly on 8 June 1887 in Marseilles . This asteroid is a member of the Themis family [3] and is classified as a primitive carbonaceous F-type / C-type asteroid . It is orbiting the Sun at a distance

#13 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

#14 2015 KH162

2015 KH 162 is a large trans-Neptunian object orbiting in the scattered disc region of the outermost Solar System . First observed in 2015, this minor planet is one of the most distant objects from the Sun at 60.6   AU , or twice as far as Neptune . 2015 KH 162 Orbital diagram of 2015 KH 162 Discove

#15 367943 Duende

367943 Duende ( provisional designation 2012 DA 14 ) is a micro- asteroid and a near-Earth object of the Aten and Atira group , approximately 30 meters (98   ft) in diameter. It was discovered by astronomers of the Astronomical Observatory of Mallorca at its robotic La Sagra Observatory in 2012, and

#16 928 Hildrun

928 Hildrun ( prov. designation : A920 DC or 1920 GP ), is a dark background asteroid , approximately 64 kilometers (40 miles) in diameter, located in the outer region of the asteroid belt . It was discovered on 23 February 1920, by astronomer Karl Reinmuth at the Heidelberg-Königstuhl State Observa

#17 (388188) 2006 DP14

(388188) 2006 DP 14 , provisional designation 2006 DP 14 , is a sub-kilometer sized, peanut-shaped asteroid on a highly eccentric orbit, classified as near-Earth object and potentially hazardous asteroid of the Apollo group . This contact binary was discovered on 23 February 2006, by astronomers of

#18 1991 VG

1991 VG is a very small near-Earth object of the Apollo group , approximately 5–12 meters (16–39 feet) in diameter. It was first observed by American astronomer James Scotti on 6 November 1991, using the Spacewatch telescope on Kitt Peak National Observatory near Tucson, Arizona, in the United State

#19 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

#20 (29075) 1950 DA

(29075) 1950 DA , provisional designation 1950 DA , is a risk–listed asteroid , classified as a near-Earth object and potentially hazardous asteroid of the Apollo group , approximately 1.1 kilometers (0.68 miles) in diameter. [4] It once had the highest known probability of impacting Earth . [11] In


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Comet / Comet


#1 27P/Crommelin

Comet Crommelin , also known as Comet Pons-Coggia-Winnecke-Forbes , is a periodic comet with an orbital period of almost 28 years. It fits the classical definition of a Halley-type comet with (20 years < period < 200 years). It is named after the British astronomer Andrew C. D. Crommelin who calcula

#2 C/2021 A1 (Leonard)

C/2021 A1 (Leonard) was a long period comet [4] that was discovered by G. J. Leonard at the Mount Lemmon Observatory on 3 January 2021 (a year before perihelion ) when the comet was 5   AU (750   million   km ) from the Sun. [1] It had a retrograde orbit. The nucleus was about 1   km (0.6   mi) acro

#3 130P/McNaught–Hughes

130P/McNaught–Hughes is a periodic comet in the Solar System . It takes 6.65 years to orbit the Sun and is 4.2   km in diameter. [1] Periodic comet with 6 year orbit 130P/McNaught-Hughes Discovery Discovered by Robert H. McNaught Shaun M. Hughes Discovery date September 30, 1991 [1] Alternative desi

#4 Comet Lulin

Comet Lulin (official designation C/2007 N3 (Lulin) , Traditional Chinese :鹿林彗星) is a non-periodic comet . It was discovered by Ye Quanzhi and Lin Chi-Sheng from Lulin Observatory . [1] [2] [7] It peaked in brightness and arrived at perigee for observers on Earth on February 24, 2009, [8] at magnitu


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Galaxy / Galaxy


#1 NGC 4636

NGC 4636 is an elliptical galaxy located in the constellation Virgo . It is a member of the NGC 4753 Group of galaxies, which is a member of the Virgo II Groups , a series of galaxies and galaxy clusters strung out from the southern edge of the Virgo Supercluster . [3] It is located at a distance of

#2 NGC 4457

NGC 4457 is an intermediate spiral galaxy located about 55 million light-years away [2] in the constellation of Virgo . [3] It is also classified as a LINER galaxy, a class of active galaxy defined by their spectral line emissions . [4] [2] NGC 4457 Is inclined by about 33°. [5] It was discovered by

#3 Messier 83

Messier 83 or M83 , also known as the Southern Pinwheel Galaxy and NGC 5236 , is a barred spiral galaxy [7] approximately 15 million light-years away in the constellation borders of Hydra and Centaurus . Nicolas-Louis de Lacaille discovered M83 on 23 February 1752 at the Cape of Good Hope . [8] Char

#4 NGC 3859

NGC 3859 is a spiral galaxy [2] located about 295 million light-years away in the constellation Leo . [3] It was discovered by astronomer Édouard Stephan on March 23, 1884. [4] The galaxy is a member of the Leo Cluster . [5] [6] Spiral galaxy in the constellation Leo NGC 3859 SDSS image of NGC 3859.

#5 NGC 4665

NGC 4665 , also catalogued as NGC 4624 and NGC 4664 , is a barred lenticular or spiral galaxy located in the constellation Virgo . It is a member of the Virgo II Groups , a series of galaxies and galaxy clusters strung out from the southern edge of the Virgo Supercluster . [4] It is located at a dis

#6 NGC 3884

NGC 3884 is a spiral galaxy located about 330 million light-years away [2] in the constellation Leo . [3] The galaxy was discovered by astronomer William Herschel on April 27, 1785 [4] and is a member of the Leo Cluster . [5] [6] [7] Spiral galaxy in the constellation Leo NGC 3884 SDSS image of NGC

#7 NGC 3640

NGC 3640 is an elliptical galaxy located in the constellation Leo . It is located at a distance of circa 75 million light years from Earth, which, given its apparent dimensions, means that NGC 3640 is about 90,000 light years across. It was discovered by William Herschel on February 23, 1784. [3] It

#8 NGC 2525

NGC 2525 is a barred spiral galaxy located in the constellation Puppis . It is located at a distance of about 70 million light years from Earth, which, given its apparent dimensions, means that NGC 2525 is about 60,000 light years across. It was discovered by William Herschel on February 23, 1791. [


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Institution / Institution


#1 Višnjan Observatory

Višnjan Observatory ( Croatian : Zvjezdarnica Višnjan ; obs. code: 120 ) is an astronomical observatory located near the village of Višnjan in Croatia . It is headed by Korado Korlević , a prolific astronomer and discoverer of minor planets . In 2009, the Višnjan observatory moved to Tičan (at 45°17

#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 Daniel K. Inouye Solar Telescope

The Daniel K. Inouye Solar Telescope ( DKIST ) is a scientific facility for studies of the sun at Haleakala Observatory on the Hawaiian island of Maui . Known as the Advanced Technology Solar Telescope ( ATST ) until 2013, it was named after Daniel K. Inouye , a US Senator for Hawaii . [1] It is the

#6 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

#7 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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Meteorite / Meteorite


#1 HD 16417 b

HD 16417 b (also called λ 2 Fornacis b ) is an extrasolar planet located approximately 83 light years away in the constellation of Fornax , orbiting the 6th magnitude G-type main sequence star HD 16417 . This planet has minimum mass only 7% that of Jupiter , making this a Neptune -mass planet. In ad


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Planet / Planet


#1 Anglo-Australian Planet Search

The Anglo Australian Planet Search or ( AAPS ) is a long-term astronomical survey started in 1998 and continuing to the present. It is being carried out on the 3.9-metre Anglo-Australian Telescope (AAT) of the Anglo-Australian Observatory in Australia . The purpose of this survey is to catalog plane


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Researcher / Researcher


#1 Nirupama Raghavan

Nirupama Raghavan (19 July 1940, Madras – 23 February 2007, Chennai ) was an Indian astrophysicist, weather scientist, historian of science and educator. She was the Director of the Nehru Planetarium in New Delhi . Nirupama Raghavan Alma   mater Indian Institute of Astrophysics Scientific career Fie

#2 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

#3 Reva Williams

Reva Kay Williams is an American astrophysicist. Williams is the first Black American woman to receive a Ph.D. in theoretical astrophysics and the first person to successfully work out the Penrose process using Einstein's Theory of Relativity to extract energy from black holes. American astronomer D

#4 Didier P. Queloz

Didier Patrick Queloz FRS ( French pronunciation:   ​ [didje kəlo, kelo] ; born 23 February 1966) is a Swiss astronomer . He is the Jacksonian Professor of Natural Philosophy at the University of Cambridge , [1] where he is also a fellow of Trinity College, Cambridge , as well as a professor at the

#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 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 Jaan Einasto

Jaan Einasto (born 23 February 1929) is an Estonian astrophysicist and one of the discoverers of the large-scale structure of the Universe . [3] Estonian astrophysicist Jaan Einasto Jaan Einasto with his Marcel Grossmann Award, 2009 Born Jaan Eisenschmidt ( 1929-02-23 ) 23 February 1929 (age   93) T

#8 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

#9 Alan Hunter (astronomer)

Alan Hunter CBE (9 September 1912 East Ham , London – 11 December 1995) was an English astronomer who spent his career at the Royal Greenwich Observatory , serving as Director between 1973 and 1975. [1] [2] Alan Hunter Born ( 1912-09-09 ) 9 September 1912 East Ham , London, England Died 11 December

#10 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

#11 Carl Bremiker

Carl Bremiker (23 February 1804, Hagen , Westphalia – 26 March 1877, Berlin ) was a German astronomer and geodesist . First educated as a surveyor, Bremiker worked on the Rhenish-Westphalia survey until 1835. He earned a doctorate and was an assistant to Johann Franz Encke . On 26 October 1840 Bremi

#12 Sallie Baliunas

Sallie Louise Baliunas (born February 23, 1953) [1] is a retired astrophysicist. She formerly worked at the Center for Astrophysics | Harvard & Smithsonian and was the Deputy Director of the Mount Wilson Observatory from 1991 to 2003. American astronomer Sallie L. Baliunas Born ( 1953-02-23 ) Februa

#13 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

#14 Reysa Bernson

Reysa Verhaeghe or Reysa Bernson (September 26, 1904 - 1944) was a French astronomer . She founded the Association Astronomique du Nord in 1923. She was particularly known for her work popularizing astronomy in France through public demonstrations and the development of planetaria . [1] French astro

#15 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

#16 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 §  

#17 Leonard Kornoš

Leonard Kornoš (born 1956) is a Slovak astronomer and a prolific discoverer of asteroids . [2] Slovak astronomer Minor planets discovered: 37   [1] see §   List of discovered minor planets

#18 Johannes von Gmunden

Johannes von Gmunden ( Latin : Johannes de Gamundia ; c. 1380/84 – February 23, 1442) was a German/Austrian astronomer , mathematician , humanist and early instrument maker. Johannes von Gmünd is also the name of a 14th-century architect, see Basel Münster . Johannes von Gmunden Born 1380/84 Gmunden

#19 Joel Hastings Metcalf

Joel Hastings Metcalf (January 4, 1866 – February 23, 1925) was an American astronomer , humanitarian and minister . [2] Asteroids discovered: 41   [1] 525 Adelaide October 21, 1908 581 Tauntonia December 24, 1905 599 Luisa April 25, 1906 600 Musa June 14, 1906 602 Marianna February 16, 1906 603 Tim

#20 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


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Star / Star


#1 Rho Sagittarii

The Bayer designation Rho Sagittarii ( Rho   Sgr , ρ   Sagittarii , ρ   Sgr ) is shared by two stars in the constellation Sagittarius . ρ 1 Sagittarii [1] ρ 2 Sagittarii [2] The two stars are separated by 0.46° in the sky. Because they are close to the ecliptic , they can be occulted by the Moon and

#2 GRB 060218

GRB 060218 (and SN 2006aj ) was a gamma-ray burst (abbreviated as GRB) with unusual characteristics never seen before. This GRB was detected by the Swift satellite on February 18, 2006, and its name is derived from the date. It was located in the constellation Aries . February 18, 2006 gamma-ray bur

#3 Sakurai's Object

Sakurai's Object ( V4334 Sagittarii ) is a star in the constellation of Sagittarius . It is thought to have previously been a white dwarf that, as a result of a very late thermal pulse , swelled and became a red giant . It is located at the center of a planetary nebula and is believed to currently b

#4 SN 1987A

SN 1987A was a type II supernova in the Large Magellanic Cloud , a dwarf satellite galaxy of the Milky Way . It occurred approximately 51.4 kiloparsecs (168,000 light-years ) from Earth and was the closest observed supernova since Kepler's Supernova . 1987A's light reached Earth on February 23, 1987

#5 List of supernovae

This is a list of supernovae that are of historical significance. These include supernovae that were observed prior to the availability of photography, and individual events that have been the subject of a scientific paper that contributed to supernova theory. SN 1054 remnant ( Crab Nebula ) An alte

#6 Luhman 16

Luhman 16 (WISE 1049−5319, WISE J104915.57−531906.1) is a binary brown-dwarf system in the southern constellation Vela at a distance of approximately 6.5 light-years (2.0 parsecs ) from the Sun . These are the closest-known brown dwarfs and the closest system found since the measurement of the prope


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