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langs: 20 августа [ru] / august 20 [en] / 20. august [de] / 20 août [fr] / 20 agosto [it] / 20 de agosto [es]

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

Asteroid / Asteroid


#1 88611 Teharonhiawako

88611 Teharonhiawako , or (88611) Teharonhiawako – Sawiskera as a binary, [5] is a trans-Neptunian object and a member of the cold classical Kuiper belt , measuring about 220   km in diameter. It is a binary object , with a large companion named Sawiskera (formally designated (88611) Teharonhiawako

#2 3225 Hoag

3225 Hoag , provisional designation 1982 QQ , is a dynamical Hungaria asteroid from the innermost regions of the asteroid belt , approximately 5.5 kilometers (3.4 miles) in diameter. It was discovered on 20 August 1982, by American astronomer couple Carolyn and Eugene Shoemaker at the Palomar Observ

#3 2017 QC36

2017 QC 36 is a near-Earth object and a potentially hazardous asteroid of the Aten group , It measures approximately 200 meters (660 feet) in diameter and was briefly observed by the Wide-field Infrared Survey Explorer on 18 August 2017 before it became a lost asteroid on the following day. It was l

#4 1807 Slovakia

1807 Slovakia , provisional designation 1971 QA , is a stony asteroid and slow rotator from the inner regions of the asteroid belt , approximately 9 kilometers in diameter. It was discovered on 20 August 1971, by Slovak astronomer Milan Antal at Skalnaté pleso Observatory in the High Tatras mountain

#5 1474 Beira

1474 Beira , provisional designation 1935 QY , is a bright carbonaceous asteroid and large Mars-crosser on an eccentric orbit from the asteroid belt , approximately 15 kilometers in diameter. It was discovered on 20 August 1935, by South African astronomer Cyril Jackson at the Union Observatory in J

#6 669 Kypria

669 Kypria is a minor planet orbiting the Sun that was discovered by German astronomer August Kopff on August 20, 1908. 669 Kypria A three-dimensional model of 669 Kypria based on its light curve Discovery Discovered   by August Kopff Discovery   site Heidelberg Discovery   date 20 August 1908 Desig

#7 6244 Okamoto

6244 Okamoto , provisional designation 1990 QF , is a background asteroid and binary system from the inner regions of the asteroid belt , approximately 5 kilometers (3 miles) in diameter. It was discovered on 20 August 1990, by Japanese astronomer Tsutomu Seki at the Geisei Observatory in Kōchi, Jap

#8 670 Ottegebe

670 Ottegebe is a minor planet orbiting the Sun . In 2007 lightcurve data showed that Ottegebe rotates every 10.041 ± 0.002 hours. [2] The name refers to a character in Gerhardt Hauptmann 's play Der arme Heinrich . It is orbiting close to a 5:2 mean motion resonance with Jupiter , which is located

#9 Pluto

Pluto ( minor-planet designation : 134340 Pluto ) is a dwarf planet in the Kuiper belt , a ring of bodies beyond the orbit of Neptune . It is the ninth-largest and tenth-most- massive known object to directly orbit the Sun . It is the largest known trans-Neptunian object by volume, by a small margin

#10 (242450) 2004 QY2

(242450) 2004 QY 2 ( prov. designation : 2004 QY 2 ) is an asteroid on an eccentric orbit, classified as near-Earth object and potentially hazardous asteroid of the Apollo group , approximately 3 kilometers (2 miles) in diameter. It was discovered on 20 August 2004 by the Siding Spring Survey at an


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Comet / Comet


#1 Halley's Comet

Halley's Comet or Comet Halley , officially designated 1P/Halley , is a short-period comet visible from Earth every 75–79 years. [1] Halley is the only known short-period comet that is regularly visible to the naked eye from Earth, and thus the only naked-eye comet that can appear twice in a human l

#2 97P/Metcalf–Brewington

97P/Metcalf–Brewington is a periodic Jupiter-family comet originally discovered by Joel H. Metcalf in 1906 but subsequently lost. A new observation in 1991 by Howard J. Brewington was matched to the 1906 sighting; the orbit was computed and the comet was observed again on its returns to perihelion i

#3 57P/du Toit–Neujmin–Delporte

57P/ du Toit – Neujmin – Delporte is the designation of a periodic comet . It is a member of the Jupiter family of comets whose orbits and evolution are strongly influenced by the giant planet. [5] In 2002 it was discovered to have broken up into at least 20 fragments. [6] At the time of their disco

#4 22P/Kopff

Comet Kopff or 22P/Kopff is a periodic comet in the Solar System . Discovered on August 23, 1906, it was named after August Kopff who discovered the comet. The comet was missed on its November 1912 return, but was recovered on its June 1919 return and has been seen at every apparition since. [4] Clo

#5 48P/Johnson

48P/Johnson is a periodic comet in the Solar System . Periodic comet with 7 year orbit 48P/Johnson Discovery Discovered by Ernest Leonard Johnson Discovery date August 25, 1949 Alternative designations 1949 II; 1956 V; 1963 IV; 1970 IV; 1977 I; 1983 XVIII; 1990 XXIII Orbital characteristics A Epoch


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Galaxy / Galaxy


#1 NGC 7047

NGC 7047 is an intermediate spiral galaxy located about 270 million light-years away in the constellation of Aquarius . [2] [3] NGC 7047 is also classified as a LINER -type galaxy. [4] NGC 7047 has an estimated diameter of 127,350 light years. [3] It was discovered by French astronomer Édouard Steph

#2 NGC 2

NGC 2 is a spiral galaxy in the constellation Pegasus , discovered by Lawrence Parsons, 4th Earl of Rosse on 20 August 1873, and was described as "very faint, small, south of NGC 1 ." [3] It lies slightly to the south of NGC 1 . It is a faint spiral galaxy of apparent magnitude 14.2. [1] Spiral gala

#3 NGC 446

NGC 446 is a lenticular galaxy of type (R)SAB0^0 located in the constellation Pisces . It was first discovered on October 23, 1864 by Albert Marth (and later listed as NGC 446); it was also seen on August 20, 1892 by Stéphane Javelle (and later listed as IC 89). It was described by Dreyer as "faint,

#4 NGC 710

NGC 710 is a spiral galaxy located 260 million light-years away [2] in the constellation Andromeda . It was discovered by the Irish engineer and astronomer Bindon Blood Stoney on October 28, 1850 [3] [4] and is a member of the galaxy cluster Abell 262 . [5] [6] [7] [8] [9] Spiral galaxy in the const

#5 NGC 772

NGC 772 (also known as Arp 78 ) is an unbarred spiral galaxy approximately 130 million light-years away in the constellation Aries . Unbarred Spiral Galaxy in the constellation of Aries NGC 772 NGC 772 imaged by the Gemini Observatory Observation data ( J2000 epoch ) Constellation Aries Right ascens

#6 Abell 2142

Abell 2142 , or A2142, is a huge, X-ray luminous galaxy cluster in the constellation Corona Borealis . It is the result of a still ongoing merger between two galaxy clusters. The combined cluster is six million light years across, contains hundreds of galaxies and enough gas to make a thousand more.


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Institution / Institution


#1 Wise Observatory

The Florence and George Wise Observatory (IAU code 097) is an astronomical observatory owned and operated by Tel Aviv University . It is located 5 kilometers (3.1 miles) west of the town of Mitzpe Ramon in the Negev desert near the edge of the Ramon Crater , and it is the only professional astronomi

#2 Pic du Midi de Bigorre

The Pic du Midi de Bigorre or simply the Pic du Midi (elevation 2,877   m (9,439   ft) ) is a mountain in the French Pyrenees . It is the site of the Pic du Midi Observatory. Not to be confused with Pic du Midi d'Ossau . Pic du Midi de Bigorre Highest   point Elevation 2,877   m (9,439   ft) Promine

#3 Camille Flammarion Observatory

The observatory was established in Juvisy-sur-Orge in 1883 by the French astronomer and author Camille Flammarion . In March 2010, the structure was classified as a historical monument by the French Ministry of Culture . The observatory belongs to the Société astronomique de France . Observatory Cam

#4 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

#5 Crimean Astrophysical Observatory

The Crimean Astrophysical Observatory ( CrAO , obs.   code : 095 ) is located at Nauchnij research campus, near the Central Crimean city of Bakhchysarai , on the Crimean peninsula. CrAO is often called simply by its location and campus name, Crimea–Nauchnij , still ranks among the worldwide most pro

#6 Cerro Tololo Inter-American Observatory

The Cerro Tololo Inter-American Observatory ( CTIO ) is an astronomical observatory located on Cerro Tololo in the Coquimbo Region of northern Chile , with additional facilities located on Cerro Pachón about 10 kilometres (6.2   mi) to the southeast. It is approximately 80 kilometres (50   mi) east

#7 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

#8 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

#9 Perth Observatory

The Perth Observatory is the name of two astronomical observatories located in Western Australia (WA). In 1896, the original observatory was founded in West Perth on Mount Eliza overlooking the city of Perth (obs. code 319 ). Due to the city's expansion, the observatory moved to Bickley in 1965. The

#10 Network for Astronomy School Education

Network for Astronomy School Education (NASE) is an International Astronomical Union (IAU) Working Group that works on Training Teachers for primary and secondary schools. In 2007, professor George K. Miley , IAU vice-president, invited Rosa M. Ros to begin exploring the idea of setting up an astron

#11 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

#12 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) .

#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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Nebula / Nebula


#1 List of supernova remnants

This is a list of observed supernova remnants (SNRs) in the Milky Way , as well as galaxies nearby enough to resolve individual nebulae, such as the Large and Small Magellanic Clouds and the Andromeda Galaxy . Supernova remnants typically only survive for a few tens of thousands of years, making all


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Researcher / Researcher


#1 Ernst Hartwig

Carl Ernst Albrecht Hartwig (14 January 1851 in Frankfurt – 3 May 1923 in Bamberg ) was a German astronomer . German astronomer Carl Ernst Albrecht Hartwig On 20 August 1885, Hartwig discovered a new star, SN 1885A (S Andromedae), in the Andromeda Galaxy , which was the first supernova that was ever

#2 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

#3 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

#4 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

#5 Jack Horkheimer

Jack Horkheimer (born Foley Arthur Horkheimer ; June 11, 1938 – August 20, 2010) was the executive director of the Miami Space Transit Planetarium . He was best known for his astronomy show Jack Horkheimer: Star Hustler , which started airing on PBS on November 4, 1976. [1] American astronomer This

#6 Jeff T. Alu

Jeffrey (Jeff) Thomas Alu (born January 1, 1966) is an American musician, photographer, graphic artist, and amateur astronomer who has participated in the Palomar Planet-Crossing Asteroid Survey . The asteroid 4104 Alu was named in his honour. [2] Minor planets discovered: 24   [1] see §   Discovere

#7 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

#8 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

#9 Agnes Giberne

Agnes Giberne (19 November 1845 in Belgaum , India – 20 August 1939 in Eastbourne , England ) was a prolific British novelist and scientific writer. [1] Her fiction was typical of Victorian evangelical fiction with moral or religious themes for children. She also wrote books on science for young peo

#10 Henry Percy, 9th Earl of Northumberland

Henry Percy, 9th Earl of Northumberland , KG (27 April 1564 – 5 November 1632) was an English nobleman. He was a grandee and one of the wealthiest peers of the court of Elizabeth I . Under James I , Northumberland was a long-term prisoner in the Tower of London , due to the suspicion that he was com

#11 Trinh Xuan Thuan

Trịnh Xuân Thuận (born August 20, 1948) is a Vietnamese - American astrophysicist . Vietnamese-American astrophysicist In this Vietnamese name , the surname is Trịnh , but is often simplified to Trinh in English-language text. In accordance with Vietnamese custom, this person should be referred to b

#12 Jurij Vega

Baron Jurij Bartolomej Vega (also Veha ; Latin : Georgius Bartholomaei Vecha ; German : Georg Freiherr von Vega ; born Vehovec , March 23, 1754 – September 26, 1802) was a Slovene mathematician , physicist and artillery officer . Jurij Vega Born ( 1754-03-23 ) March 23, 1754 Zagorica pri Dolskem , H

#13 Lenka Kotková

Lenka Kotková ( née Šarounová ; born 26 July 1973) is a Czech astronomer and a discoverer of minor planets . Czech astronomer, asteroid discoverer Lenka Kotková ( née Šarounová) Lenka Kotková at the Ondřejov Observatory Born ( 1973-07-26 ) 26 July 1973 (age   48) Dobřichovice , Czechoslovakia Nation

#14 Ursula Marvin

Ursula Bailey Marvin (August 20, 1921 – February 12, 2018) [1] [2] was an American planetary geologist and author who worked for the Smithsonian Astrophysical Observatory . [3] American geologist, mineralogist and historian of science Ursula B. Marvin Marvin in 1978 Born Ursula Bailey ( 1921-08-20 )

#15 Milan Antal

Milan Antal (1935–1999) was a Slovak astronomer . [2] [3] [4] [5] Minor planets discovered: 17   [1] 1807 Slovakia 20 August 1971 list 3393 Štúr 28 November 1984 list 3730 Hurban 4 December 1983 list 4573 Piešťany 5 October 1986 list (5025) 1986 TS 6 5 October 1986 list (6545) 1986 TR 6 5 October 19

#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 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 §  

#18 Krisztián Sárneczky

Krisztián Sárneczky (born 6 November 1974 in Budapest ) is a Hungarian teacher of geography [1] and prolific discoverer of minor planets and supernovae , researching at Konkoly Observatory in Budapest, Hungary. He is a board member of the Hungarian Astronomical Association (HAA) [2] and member of th

#19 Pierre Petit (engineer)

Pierre Petit (8 December 1594 [1] [2] – 20 August 1677) was a French astronomer, physicist, mathematician and instrument maker. Dissertations académiques sur la nature , 1671 Petit was born in Montluçon . He succeeded his father in his municipal office ( Contrôleur de l'élection ), but went to Paris

#20 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


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Star / Star


#1 SAX J1808.4−3658

A transient X-ray source first discovered in 1996 by the Italian-Dutch BeppoSAX satellite, SAX J1808.4−3658 revealed X-ray pulsations at the 401   Hz neutron star spin frequency when it was observed during a subsequent outburst in 1998 by NASA 's RXTE satellite. [2] The neutron star is orbited by a

#2 SN 1885A

SN 1885A (also S Andromedae ) was a supernova in the Andromeda Galaxy , the only one seen in that galaxy so far by astronomers. It was the first supernova ever seen outside the Milky Way , [3] though it was not appreciated at the time how far away it was. It is also known as "Supernova 1885". Supern

#3 V476 Cygni

V476 Cygni or Nova Cygni 1920 was a nova which occurred in the constellation Cygnus in 1920. It was discovered by William Frederick Denning , an English amateur astronomer, at 09:30 GMT on 20 August 1920, at which time it had a magnitude of 3.7. [4] It reached a peak brightness of magnitude 1.7 on 2

#4 List of variable stars

There are over 41,638 known variable stars (2008), with more being discovered regularly, so a complete list of every single variable is impossible at this place (cf. GCVS ). The following is a list of variable stars that are well-known, bright, significant, or otherwise interesting. This is a dynami

#5 V849 Ophiuchi

V849 Ophiuchi or Nova Ophiuchi 1919 was a nova that erupted in 1919, in the constellation Ophiuchus , and reached a blue band brightness of magnitude 7.2. [4] Joanna C. S. Mackie discovered the star while she was examining Harvard College Observatory photographic plates . The earliest plate it was v


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