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langs: 17 апреля [ru] / april 17 [en] / 17. april [de] / 17 avril [fr] / 17 aprile [it] / 17 de abril [es]

days: april 14 / april 15 / april 16 / april 17 / april 18 / april 19 / april 20

Asteroid / Asteroid


#1 67 Asia

Asia ( minor planet designation 67 Asia ) is a large main belt asteroid . It was discovered by English astronomer N. R. Pogson on April 17, 1861, from the Madras Observatory . Pogson chose the name to refer both to Asia , a Titaness in Greek mythology , and to the continent of Asia , because the ast

#2 276 Adelheid

Adelheid ( minor planet designation : 276 Adelheid ) is a dark Alauda asteroid from the outer region of the asteroid belt , approximately 121 kilometers in diameter. It was discovered by Austrian astronomer Johann Palisa at Vienna Observatory on 17 April 1888. [24] The meaning of the asteroids's nam

#3 1831 Nicholson

1831 Nicholson , provisional designation 1968 HC , is a stony asteroid of the Baptistina family from the inner regions of the asteroid belt , approximately 8 kilometers (5 miles) in diameter. It was discovered on 17 April 1968, by Swiss astronomer Paul Wild at the Zimmerwald Observatory near Bern, S

#4 894 Erda

894 Erda ( prov. designation : A918 LA or 1918 DT ) is a bright background asteroid from the outer regions of the asteroid belt . It was discovered on 4 June 1918, by German astronomer Max Wolf at the Heidelberg-Königstuhl State Observatory . [1] The X-type asteroid has a short rotation period of 4.

#5 2135 Aristaeus

2135 Aristaeus (1977 HA) is an Apollo asteroid discovered on April 17, 1977, by E. F. Helin and S. J. Bus at Palomar Observatory . It is named for Aristaeus , the son of Apollo and the nymph Cyrene. [2] Aristaeus Discovery Discovered   by E. F. Helin and S. J. Bus Discovery   site Palomar Discovery

#6 17 Thetis

Thetis , minor planet designation 17 Thetis , is a stony asteroid from the inner regions of the asteroid belt , approximately 90 kilometers in diameter. It was discovered on 17 April 1852, by German astronomer Robert Luther at Bilk Observatory in Düsseldorf, Germany who deferred to Friedrich Wilhelm

#7 805 Hormuthia

805 Hormuthia is a minor planet orbiting the Sun . This asteroid follows an elliptical orbit through the main asteroid belt that reaches perihelion just outside the Kirkwood gap at 2.5 AU . Its estimated diameter is 73   km, and it is one of the 500 largest asteroids. 805 Hormuthia was discovered by

#8 8116 Jeanperrin

8116 Jeanperrin , provisional designation 1996 HA 15 , is a Florian asteroid and synchronous binary system from the inner regions of the asteroid belt , approximately 4.8 kilometers (3 miles) in diameter. It was discovered on 17 April 1996, by Belgian astronomer Eric Elst at the La Silla Observatory

#9 (516977) 2012 HZ84

(516977) 2012 HZ 84 , provisional designation 2012 HZ 84 , is a small trans-Neptunian object from the Kuiper belt located in the outermost region of the Solar System , approximately 74 kilometers (46 miles) in diameter. It was discovered on 17 April 2012, by a team of astronomers using one of the Ma

#10 18493 Demoleon

18493 Demoleon / d ɪ ˈ m oʊ l i ə n / is a Jupiter trojan from the Trojan camp , approximately 33 kilometers (21 miles) in diameter. It was discovered by Belgian astronomer Eric Elst at ESO's La Silla Observatory in northern Chile on 17 April 1996. [1] The dark Jovian asteroid has a rotation period

#11 1830 Pogson

1830 Pogson , provisional designation 1968 HA , is a stony Florian asteroid and an asynchronous binary system from the inner regions of the asteroid belt , approximately 8 kilometers (5 miles) in diameter. It was discovered on 17 April 1968, by Swiss astronomer Paul Wild at the Zimmerwald Observator

#12 4672 Takuboku

4672 Takuboku , provisional designation 1988 HB , is a background asteroid from the outer regions of the asteroid belt , approximately 35 kilometers (22 miles) in diameter. It was discovered on 17 April 1988, by Japanese astronomers Seiji Ueda and Hiroshi Kaneda at the Kushiro Observatory on Hokkaid

#13 38083 Rhadamanthus

38083 Rhadamanthus / r æ d ə ˈ m æ n θ ə s / is a trans-Neptunian object (TNO). It was discovered in 1999 by the Deep Ecliptic Survey . It was originally mistakenly thought to be a plutino . [2] [3] 38083 Rhadamanthus Discovery Discovered   by Deep Ecliptic Survey Discovery   date 17 April 1999 Desi

#14 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

#15 (118378) 1999 HT11

(118378) 1999 HT 11 , provisional designation : 1999 HT 11 , is a trans-Neptunian object from the outermost region of the Solar System , locked in a 4:7 orbital resonance with Neptune . It was discovered on 17 April 1999, by astronomers at the Kitt Peak Observatory , Arizona, in the United States. [

#16 793 Arizona

793 Arizona is a minor planet orbiting the Sun that was discovered April 9, 1907 by American businessman Percival Lowell at Flagstaff . [3] It was named for the state of Arizona . [4] The object was independently discovered on April 17, 1907 by J. H. Metcalf at Taunton . [3] This is a main belt aste


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Comet / Comet


#1 C/2008 T2 (Cardinal)

C/2008 T2 (Cardinal) , is a non-periodic comet . It was discovered by Rob. D. Cardinal from the University of Calgary . [1] [4] [5] It was visible as a telescopic and binocular object during 2009. [5] [6] It passed near the Perseus star clusters NGC 1528 on March 15 and NGC 1545 on March 17, 2009. [

#2 C/2012 F6 (Lemmon)

C/2012 F6 (Lemmon) is a long-period comet discovered in Leo on 23 March 2012, by A. R. Gibbs [1] using the 1.5-m   reflector at the Mt. Lemmon Survey , located at the summit of Mount Lemmon in the Santa Catalina Mountains north of Tucson, Arizona , USA. Initially, the object was considered to be of

#3 C/1874 H1

C/1874 H1 (Coggia) is a famous non-periodic comet , which in the summer of 1874 could be seen by naked eye observation. On the basis of its brightness, the comet has been called the Great Comet of 1874; on July 13 the magnitude of the brightness was between 0 and 1. [2] C/1874 H1 (Coggia) Drawing of


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Galaxy / Galaxy


#1 NGC 4500

NGC 4500 is a barred spiral galaxy in the constellation Ursa Major . The galaxy was discovered on April 17, 1789 by William Herschel . [6] It is a blue compact galaxy . [2] Barred spiral galaxy in the constellation Ursa Major NGC 4500 HST image of NGC 4500 Observation data ( J2000 epoch ) Constellat

#2 NGC 5177

NGC 5177 is a lenticular galaxy . Based on a redshift of 6467 km/s the galaxy is crudely estimated to be about 300 million light-years away. [1] Lenticular galaxy in the constellation Virgo NGC 5177 NGC 5177 with SN 2010cr May 19, 2010 Observation data ( J2000 epoch ) Constellation Virgo Right ascen

#3 NGC 4454

NGC 4454 is a barred spiral galaxy [2] located about 123 million light-years away [3] in the constellation of Virgo . [4] NGC 4454 was discovered by astronomer William Herschel on April 17, 1784. [5] Barred spiral galaxy in the constellation Virgo NGC 4454 The barred spiral galaxy NGC 4454. Observat

#4 NGC 4551

NGC 4551 is an elliptical galaxy located about 70 million light-years away [3] in the constellation Virgo . [4] It was discovered by astronomer William Herschel on April 17, 1784. [5] NGC 4551 appears to lie close to the lenticular galaxy NGC 4550 . However, both galaxies show no sign of interaction

#5 NGC 4531

NGC 4531 is a spiral galaxy located about 50 million light-years away [3] in the constellation Virgo . [4] It was discovered by astronomer William Herschel on April 17, 1784. [5] NGC 4531 is a member of the Virgo Cluster . [6] [7] Spiral galaxy in the constellation Virgo NGC 4531 SDSS image of NGC 4

#6 NGC 4206

NGC 4206 is a spiral galaxy located about 70 million light-years away from Earth in the constellation of Virgo . The galaxy is visible with most moderate amateur telescopes at 13th magnitude . It was discovered by British astronomer William Herschel on 17 April 1784 and is a member of the Virgo Clus

#7 NGC 4436

NGC 4436 is a lenticular or dwarf elliptical galaxy located about 60 million light-years away [3] [4] in the constellation of Virgo . [5] NGC 4436 was discovered by astronomer William Herschel on April 17, 1784. [6] The galaxy is a member of the Virgo Cluster . [7] Lenticular or dwarf irregular gala

#8 NGC 4440

NGC 4440 is a barred spiral galaxy located about 55 million light-years away [3] in the constellation of Virgo . [4] NGC 4440 was discovered by astronomer William Herschel on April 17, 1784. [5] It is a member of the Virgo Cluster . [6] Galaxy in the constellation Virgo NGC 4440 SDSS image of NGC 44

#9 NGC 4267

NGC 4267 is a barred lenticular galaxy located about 55 million light-years away [2] in the constellation Virgo . [3] It was discovered by astronomer William Herschel on April 17, 1784 [4] and is a member of the Virgo Cluster . [5] [6] [7] Barred lenticular galaxy in the constellation Virgo NGC 4267

#10 NGC 4388

NGC 4388 is an active spiral galaxy in the equatorial constellation of Virgo . It was discovered April 17, 1784 by Wilhelm Herschel . [6] This galaxy is located at a distance of 57 [3]   million light years and is receding with a radial velocity of 2,524 [2]   km/s. It is one of the brightest galaxi

#11 NGC 5678

NGC 5678 is a barred spiral galaxy in the constellation Draco . It was discovered by William Herschel on April 17, 1789. [3] Barred spiral galaxy in the constellation Draco NGC 5678 Hubble Space Telescope image of NGC 5678 Observation data ( J2000 epoch ) Constellation Draco Right ascension 14 h 32


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Institution / Institution


#1 Air Force Maui Optical and Supercomputing observatory

The Air Force Maui Optical and Supercomputing observatory is an Air Force Research Laboratory (AFRL) operating location at Haleakala Observatory on Maui , Hawaii , with a twofold mission ( 608 ). First, it conducts the research and development mission on the Maui Space Surveillance System (MSSS) at

#2 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

#3 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

#4 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

#5 Düsseldorf-Bilk Observatory

The Sternwarte Düsseldorf (a.k.a. Sternwarte Bilk , Sternwarte Charlottenruhe ; Bilk Observatory or Düsseldorf-Bilk Observatory in English) in Düsseldorf-Bilk was a private observatory founded in 1843 by Johann Friedrich Benzenberg . [1] The observatory's main feature was a refracting telescope with

#6 Junk Bond Observatory

The Junk Bond Observatory ( JBO ; code: 701 ) is located in the Sonoran Desert at Sierra Vista , Arizona, United States. Astronomical observatory in Cochise County, Arizona This article needs additional citations for verification . ( January 2013 ) Observatory Junk Bond Observatory Alternative   nam

#7 Observatory of Saint-Veran

The Observatory of Saint-Veran ( French : Observatoire de Saint-Véran ) is a French astronomical observatory located on the Pic de Château Renard in the municipality of Saint-Véran in the department of Hautes-Alpes in the French Alpes. At 2,930 meter altitude, it is one of the highest observatories

#8 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) .

#9 Badlands Observatory

The Badlands Observatory (IAU code 918 ) is an astronomical observatory named after the Badlands National Park , located in Quinn , South Dakota, near the city of Wall , United States. The observatory was founded in 2000. [2] by American amateur astronomer Ron Dyvig , who was associated with the Opt


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Meteorite / Meteorite


#1 HD 86081 b

HD 86081 b or Santamasa , meaning 'clouded' in Sanskrit , [3] is a gas giant exoplanet that orbits close to its host star HD 86081 or Bibha , completing its orbit in only 2.1375 days. With such a short orbit it belongs to the class of exoplanets known as hot Jupiters . Like most Hot Jupiters, the or

#2 HD 224693 b

HD 224693 b is an extrasolar planet orbiting the star HD 224693 every 27 days with a minimum mass 70% of Jupiter . [2] Extrasolar planet in the constellation Cetus HD 224693 b Discovery Discovered   by Johnson and NK2 consortium Discovery   site Hawaii , United States Discovery   date April 17, 2006

#3 HD 33283 b

HD 33283 b is an exoplanet orbiting around HD 33283 . The mass of the planet is about 1 / 3 that of Jupiter or about the same as Saturn . However, the planet orbits very close to the star , taking only 18 days to complete its orbit with average speed of 86.5   km/s (311400   km/h). Despite this, its

#4 Kepler-186f

Kepler-186f (also known by its Kepler object of interest designation KOI-571.05 ) is an exoplanet orbiting the red dwarf Kepler-186 , [4] [5] [6] about 580 light-years (180 parsecs ) from Earth . [7] Goldilocks terrestrial exoplanet orbiting Kepler-186 Kepler-186f [1] [2] Size comparison of Kepler-1

#5 Kepler-186e

Kepler-186e (also known by its Kepler Object of Interest designation KOI-571.04 ) is a confirmed exoplanet orbiting the red dwarf star Kepler-186 , approximately 582 light years away from Earth in the constellation of Cygnus . It is near the optimistic habitable zone but probably not in it, possibly

#6 Kepler-69b

Kepler-69b is the innermost planet of the Kepler-69 system. It is likely a hot super-Earth or mini-Neptune . [1] [2] Mini-Neptune orbiting Kepler-69 Kepler-69b [1] [2] Discovery Discovered   by Barclay et al. Discovery   site Kepler Space Observatory Discovery   date 17 April 2013 Detection method T

#7 HD 96167 b

HD 96167 b is a confirmed extrasolar planet located approximately 280 light years away in the constellation of Crater , orbiting the 8th magnitude G-type subgiant HD 96167 . It is a Jupiter -type planet with an extremely elliptical orbit, coming as close as 0.4 AU to its star, and as much as 2.2 AU

#8 WD 1145+017 b

WD 1145+017 b (also known by its EPIC designation EPIC 201563164.01 ), is a confirmed exoplanetary object, likely rocky, orbiting around and being vaporized by the white dwarf star WD 1145+017 . It was discovered by NASA 's Kepler spacecraft on its "Second Light" mission. It is located about 570 lig


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Researcher / Researcher


#1 Arthur Scott King

Arthur Scott King (January 18, 1876 – April 17, 1957) was an American physicist and astrophysicist . American physicist and astrophysicist Arthur Scott King King at the Fourth Conference International Union for Cooperation in Solar Research at Mount Wilson Observatory , 1910 Born 18 January 1876 Jer

#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 Robert Luther

Karl Theodor Robert Luther (April 16, 1822, Świdnica – February 15, 1900 Düsseldorf ), normally published as Robert Luther , was a German astronomer . While working at the Bilk Observatory in Düsseldorf, Germany, he searched for asteroids and discovered 24 of them between 1852 and 1890. [1] [2] Seve

#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 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

#6 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

#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 Semion Braude

Semion Yakovlevich Braude ( Ukrainian : Семен Якович Брауде ; 28 January 1911 – 29 June 2003) was a Soviet and Ukrainian physicist and radio astronomer . [1] Of Ashkenazi Jewish descent, Braude was born in Poltava , Ukraine , and pursued his higher education at the National University of Kharkiv , r

#9 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

#10 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

#11 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

#12 Robert H. McNaught

Robert H. McNaught (born in Scotland in 1956) is a Scottish-Australian astronomer at the Research School of Astronomy and Astrophysics of the Australian National University (ANU). He has collaborated with David J. Asher of the Armagh Observatory . Scottish-Australian astronomer (born 1956) Minor pla

#13 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

#14 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

#15 Giovanni Battista Riccioli

Giovanni Battista Riccioli , SJ (17 April 1598 – 25 June 1671) was an Italian astronomer and a Catholic priest in the Jesuit order. He is known, among other things, for his experiments with pendulums and with falling bodies, for his discussion of 126 arguments concerning the motion of the Earth, and

#16 William Kwong Yu Yeung

William Kwong Yu Yeung (born 1960; also known simply as Bill Yeung ; Chinese : 楊光宇 ) is a Hong Kong -born, Canadian amateur astronomer with telescopes based in the United States . [2] [3] Astronomer noted for the discovery of over 2,000 minor planets Minor planets discovered: 2031   [1] see §   List

#17 Paulo R. Holvorcem

Paulo Renato Centeno Holvorcem (born 10 July 1967) is a Brazilian amateur astronomer and mathematician who lives in Brasilia , Brazil . Minor planets discovered: 224   [1] credited by the MPC , as per September 2016 He is a prolific discoverer of asteroids . He is credited by the Minor Planet Center

#18 Cornelis Easton

Cornelis Easton (10 June 1864 – 3 June 1929) was a Dutch journalist and amateur astronomer who wrote popular material on astronomy and climatology apart from giving lectures. As a journalist he worked with the Nieuwe Rotterdamsche Courant (1895–1906), Nieuws van den Dag (1906–1923), and Haagsche Pos

#19 Abd al-Rahman al-Sufi

' Abd al-Rahman al-Sufi ( Persian : عبدالرحمن صوفی (December 7, 903 – May 25, 986) was a Persian [1] [2] [3] astronomer also known as ' Abd ar-Rahman as-Sufi , ' Abd al-Rahman Abu al-Husayn , ' Abdul Rahman Sufi , or ' Abdurrahman Sufi and, historically, in the West as Azophi and Azophi Arabus . [2]

#20 Albert Einstein

Albert Einstein ( / ˈ aɪ n s t aɪ n / EYEN -styne ; [6] German: [ˈalbɛʁt ˈʔaɪnʃtaɪn] ( listen ) ; 14 March 1879   – 18 April 1955) was a German-born theoretical physicist , [7] widely acknowledged to be one of the greatest and most influential physicists of all time. Einstein is best known for devel


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Star / Star


#1 LV Vulpeculae

LV Vulpeculae , also known as Nova Vulpeculae 1968 no. 1 , was the first of two novae in the constellation of Vulpecula which erupted in 1968. It was discovered by George Alcock who observed it from the back garden of his home in Farcet , England, on the morning of 15 April 1968. The next night it w

#2 SN 1006

SN 1006 was a supernova that is likely the brightest observed stellar event in recorded history, reaching an estimated −7.5 visual magnitude , [3] and exceeding roughly sixteen times the brightness of Venus. Appearing between April 30 and May 1, 1006, in the constellation of Lupus , this " guest sta

#3 Tabby's Star

Tabby's Star (also known as Boyajian's Star and WTF Star , and designated KIC 8462852 in the Kepler Input Catalog ) is an F-type main-sequence star in the constellation Cygnus approximately 1,470 light-years (450 parsecs ) from Earth. Unusual light fluctuations of the star, including up to a 22% dim

#4 HD 86081

HD 86081 is a yellow-hued star in the equatorial constellation of Sextans . It has the proper name Bibha , after Indian physicist Bibha Chowdhuri . The name was suggested in the NameExoWorlds competition by Ananyo Bhattacharya, a mechanical engineering student of the Sardar Vallabhbhai National Inst


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