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langs: 12 апреля [ru] / april 12 [en] / 12. april [de] / 12 avril [fr] / 12 aprile [it] / 12 de abril [es]

days: april 9 / april 10 / april 11 / april 12 / april 13 / april 14 / april 15

Asteroid / Asteroid


#1 10 Hygiea

Hygiea ( minor-planet designation : 10 Hygiea ) is a major asteroid and possible dwarf planet located in the main asteroid belt . With a diameter of 434 kilometres (270   mi) and a mass estimated to be 3% of the total mass of the belt, [11] it is the fourth-largest asteroid in the Solar System by bo

#2 2010 GB174

2010 GB 174 is a detached object , discovered on 12 April 2010 on data taken at the Canada France Hawaii Telescope as part of the Next Generation Virgo Cluster Survey. [8] [9] It never gets closer than 48.5   AU from the Sun (about the outer edge of the Kuiper belt ). Its large eccentricity strongly

#3 2021 GW4

2021 GW 4 is an Apollo near-Earth object roughly 5 meters (20 feet) in diameter. It was discovered by the Mount Lemmon Survey on 8 April 2021. [1] On 12 April 2021 13:01 UTC it passed 19 821   km from the surface of Earth. [3] The uncertainty in the close approach distance was ±30 km. [4] Apollo nea

#4 83982 Crantor

83982 Crantor ( / ˈ k r æ n t ɔːr / ), prov. designation : 2002 GO 9 , is a centaur in a 1:1 resonance with Uranus , approximately 60 kilometers (37 miles) in diameter. It was discovered on 12 April 2002, by astronomers of the Near-Earth Asteroid Tracking at the Palomar Observatory in California, Un

#5 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

#6 531 Zerlina

Zerlina ( minor planet designation : 531 Zerlina ), provisional designation 1904 NW, carbonaceous Palladian asteroid from the central region of the asteroid belt , approximately 18 kilometers in diameter. It was discovered by German astronomer Max Wolf at the Heidelberg-Königstuhl State Observatory

#7 (523687) 2014 DF143

(523687) 2014 DF 143 , provisional designation 2014 DF 143 , is a trans-Neptunian object and cubewano from the Kuiper belt , located in the outermost region of the Solar System . It was discovered on 12 April 2011, by astronomers with the Pan-STARRS survey at Haleakala Observatory , Hawaii, United S

#8 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 99P/Kowal

99P/Kowal , also known as Kowal 1 , is a periodic comet in the Solar System that orbits out by Jupiter and has a 15 year orbital period. It has been observed regularly since 2019. It came to perihelion in April 2022 and will again in May 2037. Periodic comet with 15 year orbit 99P/Kowal Discovery Di

#2 16P/Brooks

16P/Brooks , also known as Brooks 2 , is a periodic comet discovered by William Robert Brooks on July 7, 1889, but failed to note any motion. He was able to confirm the discovery the next morning, having seen that the comet had moved north. On August 1, 1889, the famous comet hunter Edward Emerson B

#3 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

#4 P/2016 BA14 (PanSTARRS)

P/2016 BA 14 (PanSTARRS) is a near-Earth object and periodic comet of the Jupiter family , that was radar imaged at distance of 2.2 million miles (3.5 million km, or 9 lunar distances ) during a flyby of Earth in 2016. [1] This enabled the size of the nucleus to be calculated at about 1   km (0.62  

#5 163P/NEAT

163P/NEAT is a periodic comet discovered on November 5, 2004 by Near-Earth Asteroid Tracking (NEAT) using the 1.2 meter Samuel Oschin telescope at Palomar Observatory . [1] Periodic comet with 7 year orbit 163P/NEAT Discovery Discovered by Near-Earth Asteroid Tracking ( 644 ) [1] Discovery date Nove

#6 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

#7 Great Comet of 1901

The Great Comet of 1901 , sometimes known as Comet Viscara , formally designated C/1901 G1 (and in the older nomenclature as 1901 I and 1901a ), was a comet which became bright in the spring of 1901. Visible exclusively (or almost exclusively) [2] from the southern hemisphere , it was discovered on


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Galaxy / Galaxy


#1 NGC 4478

NGC 4478 is an elliptical galaxy located about 50 million light-years away [3] in the constellation Virgo . [4] NGC 4478 was discovered by astronomer William Herschel on April 12, 1784. [5] NGC 4478 is a member of the Virgo Cluster . [6] Elliptical galaxy in the constellation of Virgo NGC 4478 SDSS

#2 NGC 4102

NGC 4102 is an intermediate [9] barred spiral galaxy located in the northern constellation of Ursa Major . It is visible in a small telescope and has an apparent visual magnitude of 11.2. [7] The galaxy was discovered April 12, 1789 by William Herschel . J. L. E. Dreyer described it as "bright, pret

#3 NGC 3729

NGC 3729 is a barred spiral galaxy located in the constellation Ursa Major . It is located at a distance of circa 65 million light years from Earth, which, given its apparent dimensions, means that NGC 3729 is about 60,000 light years across. It was discovered by William Herschel on April 12, 1789.

#4 NGC 4458

NGC 4458 is an elliptical galaxy located about 54 million light-years away [3] [4] in the constellation of Virgo . [5] It was discovered by astronomer William Herschel on April 12, 1784. [6] NGC 4458 is a member of Markarian's Chain which is part of the Virgo Cluster . [7] It is in a pair with the g

#5 NGC 4659

NGC 4659 is a lenticular galaxy [3] located about 54 million light-years away [4] in the constellation Coma Berenices . [5] NGC 4659 was discovered by astronomer William Herschel on April 12, 1784 [6] and is a member of the Virgo Cluster . [7] [8] Lenticular galaxy in the constellation Coma Berenice

#6 NGC 6366

NGC 6366 is a globular cluster located in the constellation Ophiuchus . It is designated as XI in the galaxy morphological classification scheme and was discovered by the German astronomer Friedrich August Theodor Winnecke on 12 April 1860. [2] It is at a distance of 11,700 light years away from ear

#7 NGC 4639

NGC 4639 is a barred spiral galaxy located in the equatorial constellation of Virgo . It was discovered by German-born astronomer William Herschel on April 12, 1784. John L. E. Dreyer described it as "pretty bright, small, extended, mottled but not resolved, 12th magnitude star 1 arcmin to southeast

#8 NGC 4461

NGC 4461 (also known as NGC 4443 ) is a lenticular galaxy located about 50 million light-years away [2] in the constellation of Virgo . [3] It was discovered by astronomer William Herschel on April 12, 1784. [4] NGC 4461 is a member of Markarian's Chain which is part of the Virgo Cluster . [5] Lenti

#9 NGC 4689

NGC 4689 is a spiral galaxy located about 54 million light-years away [2] in the constellation of Coma Berenices . [3] NGC 4689 is also classified as a LINER galaxy. [2] NGC 4689 is inclined at an angle of about 36° which means that the galaxy is seen almost face-on to the Earth 's line of sight. [4

#10 NGC 4476

NGC 4476 is a lenticular galaxy located about 55 million light-years away [3] in the constellation Virgo . [4] NGC 4476 was discovered by astronomer William Herschel on April 12, 1784. [5] The galaxy is a member of the Virgo Cluster . [6] [7] Lenticular galaxy in the constellation of Virgo NGC 4476

#11 NGC 6239

NGC 6239 is a barred spiral galaxy located in the constellation Hercules with a distinct core. It is designated as SB(s)B in the galaxy morphological classification scheme and was discovered by the German-born British astronomer William Herschel on 12 April 1788. The galaxy is approximately 42 milli

#12 NGC 4026

NGC 4026 is an edge-on lenticular galaxy in the constellation Ursa Major . It is located at a distance of circa 50 million light years from Earth, which, given its apparent dimensions, means that NGC 4026 is about 80,000 light years across. It was discovered by William Herschel on April 12, 1789. Le


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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 Thirty Meter Telescope protests

The Thirty Meter Telescope protests are a series of protests and demonstrations that began on the Island of Hawaii over the choosing of Mauna Kea for the site location of the Thirty Meter Telescope . Mauna Kea is the most sacred dormant volcano of Native Hawaiian religion and culture, and was known

#3 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

#4 Skinakas Observatory

Skinakas Observatory [1] ( Greek : Αστεροσκοπείο Σκίνακα [2] ) is an astronomical observatory located on the eponymous peak of Psiloritis , on the island of Crete , Greece . It has a 1.3 m modified Ritchey–Chrétien telescope and a 0.3 m Schmidt–Cassegrain telescope , which are operated by the Univer

#5 Mills Observatory

The Mills Observatory in Dundee , Scotland, is the first purpose-built public astronomical observatory in the UK. [1] Built in 1935, the observatory is classically styled in sandstone and has a distinctive 7   m dome, which houses a Victorian refracting telescope , a small planetarium , and display

#6 Črni Vrh Observatory

The Črni Vrh Observatory ( Slovene : Observatorij Črni Vrh , IAU code : 106 ) is an astronomical observatory located in western Slovenia , close to the settlement of Črni Vrh , near the town of Idrija . The current observatory was built in 1985 and stands at an elevation of 730 metres (2,400   ft) .

#7 Cawthron Atkinson Observatory

Cawthron Atkinson Observatory (formerly Atkinson Observatory) is sited in the grounds of Clifton Terrace School, Nelson , New Zealand , after previously being situated at Pipers Park for many years. [1] Observatory Atkinson Observatory Organization Nelson Science Society Location Clifton Terrace Sch


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Meteorite / Meteorite


#1 CoRoT-8b

CoRoT-8b is a transiting exoplanet orbiting the K-type main sequence star CoRoT-8 1,050 light years away in the equatorial constellation Aquila . The planet was discovered in April 2010 by the CoRoT telescope. Extrasolar planet in the constellation Aquila COROT-8b CoRoT-8b compared to Jupiter and Ne

#2 55 Cancri b

55 Cancri b (abbreviated 55 Cnc b ), occasionally designated 55 Cancri Ab (to distinguish it from the star 55 Cancri B ), also named Galileo , is an exoplanet orbiting the Sun -like star 55 Cancri A every 14.65 days . It is the second planet in order of distance from its star, and is an example of a


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Researcher / Researcher


#1 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 §  

#2 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

#3 Thierry Pauwels

Thierry Pauwels (born 22 July 1957, Ghent ) is a Belgian astronomer from the Royal Observatory of Belgium . [2] [3] Between 1996 and 2008 he discovered and co-discovered 146 minor planets . This makes him one of the top 100 minor planet discoverers. [1] Belgian astronomer Minor planetss discovered:

#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 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

#6 Jacques Vallée

Jacques Fabrice Vallée ( French:   [vale] ; born September 24, 1939) is an Internet pioneer , computer scientist , venture capitalist , author, ufologist and astronomer currently residing in San Francisco , California and Paris , France . Computer scientist, ufologist This article has multiple issue

#7 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

#8 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

#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 Ferdinand Quénisset

Ferdinand Jules Quénisset (1872–1951) was a French astronomer who specialized in astrophotography . French astronomer "Quenisset" redirects here. For the crater on Mars, see Quenisset (crater) . Ferdinand Jules Quénisset Born ( 1872-08-08 ) August 8, 1872 Paris , France Died April 8, 1951 (1951-04-0

#11 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

#12 Nicolaus Copernicus

Nicolaus Copernicus ( / k oʊ ˈ p ɜːr n ɪ k ə s , k ə -/ ; [2] [3] [4] Polish : Mikołaj Kopernik ; [lower-alpha 2] Middle Low German : Niklas Koppernigk , German : Nikolaus Kopernikus ; 19 February 1473   – 24 May 1543) was a Renaissance polymath , active as a mathematician, astronomer, and Catholic

#13 Charles Messier

Charles Messier ( French:   [ʃaʁl me.sje] ; 26   June 1730 – 12   April 1817) was a French astronomer . He published an astronomical catalogue consisting of 110   nebulae and star clusters , which came to be known as the Messier objects . Messier's purpose for the catalogue was to help astronomical

#14 James Lattimer

James Michael Lattimer (born 12 April 1950 in Marion , Indiana ) [1] is a nuclear astrophysicist who works on the dense nuclear matter equation of state and neutron stars . James Lattimer Born ( 1950-04-12 ) April 12, 1950 Marion , Indiana Alma   mater University of Notre Dame University of Texas at

#15 Lucas Lombriser

Lucas Lombriser (born 12 April 1982) is a Swiss National Science Foundation Professor at the Department of Theoretical Physics, University of Geneva . [1] His research is in Theoretical Cosmology , Dark Energy , and Alternative Theories of Gravity . In 2020 [2] [3] [4] [5] [6] [7] [8] [9] and 2021 [

#16 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

#17 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

#18 Réginald Outhier

Abbé Réginald Outhier also given as Regnauld or Renaud Outhier (16 August 1694 – 12 April 1774) was a French clergyman, traveller, and writer who worked on cartography and astronomy. French astronomer and priest Outhier was born at La Marre-Jouserans, near Poligny , France, and studied at Dole and B

#19 Frank B. Zoltowski

Frank B. Zoltowski (born 1957) is an Australian amateur astronomer and prolific discoverer of minor planets who lives in Woomera , South Australia. In 1998, he was awarded a " Gene Shoemaker NEO Grant" for improved near-Earth object searches. [2] [3] Australian astronomer Frank B. Zoltowski Born 195

#20 Hiroshi Abe (astronomer)

Hiroshi Abe ( 安部 裕史 , Abe Hiroshi , born 1958) is a Japanese amateur astronomer affiliated with the Yatsuka Observatory. [2] He is noted for numerous discoveries, including his 2007 discovery of the Nova Vulpeculae, [3] and 28 numbered minor planets during 1993–1999. [1] Japanese astronomer Minor pl


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Star / Star


#1 WISE 1217+1626

WISEPC J121756.91+162640.2 (designation abbreviated to WISE 1217+1626 , or WISE J1217+1626 ) is a binary brown dwarf system of spectral classes T9 + Y0, [2] located in constellation Coma Berenices at approximately 33 light-years from Earth . [5] Star in the constellation Coma Berenices WISEPC J12175

#2 SN 1054

SN 1054 is a supernova that was first observed on c.   4 July 1054, and remained visible until c.   6 April 1056. [2] α Supernova in the constellation Taurus; visible from 1054 to 1056 SN 1054 Giant picture mosaic of the Crab Nebula , the remnants of SN 1054, taken by the Hubble Space Telescope in v

#3 Spica

Spica is the brightest object in the constellation of Virgo and one of the 20 brightest stars in the night sky . It has the Bayer designation α Virginis , which is Latinised to Alpha Virginis and abbreviated Alpha Vir or α Vir . Analysis of its parallax shows that it is located 250 ± 10 light-years


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