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langs: 25 апреля [ru] / april 25 [en] / 25. april [de] / 25 avril [fr] / 25 aprile [it] / 25 de abril [es]

days: april 22 / april 23 / april 24 / april 25 / april 26 / april 27 / april 28

Asteroid / Asteroid


#1 292 Ludovica

Ludovica ( minor planet designation : 292 Ludovica ) is a Main belt asteroid . 292 Ludovica Discovery Discovered   by Johann Palisa Discovery   date 25 April 1890 Designations MPC   designation (292) Ludovica Alternative designations 1930 GM Minor   planet category Main belt Orbital characteristics

#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 2004 HR56

2004 HR 56 , is a micro- asteroid , classified as near-Earth object belonging to the Apollo group . It was first observed by Spacewatch at Kitt Peak National Observatory on 25 April 2004. [3] 2004 HR 56 Orbital diagram of asteroid 2004 HR 56 as of 25 April 2004 Discovery [1] Discovered   by Spacewat

#4 2017 DB120

2017 DB 120 (also written 2017 DB120 ) is a near-Earth object , meaning that it has an orbit which brings it into proximity with Earth . It is an Amor asteroid , meaning that its orbit does not cross Earth's orbit, but its perihelion is close to, but greater than, the aphelion of Earth. It was first

#5 9 Metis

Metis ( minor planet designation : 9 Metis ) is one of the larger main-belt asteroids . It is composed of silicates and metallic nickel - iron , and may be the core remnant of a large asteroid that was destroyed by an ancient collision. [9] Metis is estimated to contain just under half a percent of

#6 4429 Chinmoy

4429 Chinmoy , provisional designation 1978 RJ 2 , is a Nysian asteroid from the inner regions of the asteroid belt , approximately 3.5 kilometers (2.2 miles) in diameter. It was discovered on 12 September 1978, by Soviet astronomer Nikolai Chernykh at the Crimean Astrophysical Observatory in Nauchn

#7 5656 Oldfield

5656 Oldfield , provisional designation A920 TA , is a background asteroid from the inner regions of the asteroid belt , approximately 7.7 kilometers (4.8 miles) in diameter. It was discovered on 8 October 1920, by astronomer Walter Baade at the Bergedorf Observatory in Hamburg, Germany. The asteroi

#8 291 Alice

Alice ( minor planet designation : 291 Alice ) is a stony background asteroid from the inner region of the asteroid belt . It was discovered by Johann Palisa on 25 April 1890 at the Vienna Observatory . 291 Alice A three-dimensional model of 291 Alice based on its light curve Discovery Discovered  

#9 2022 BX1

2022 BX 1 is a potentially hazardous asteroid around 200 meters in diameter that was discovered on 25 January 2022 when it was 0.36   AU (54   million   km ) from Earth. [1] On 29 January 2022 with an observation arc of 22 days it was rated with a Torino scale of 1 for a virtual impactor on 11 July

#10 14436 Morishita

14436 Morishita , provisional designation 1992 FC 2 , is a stony background asteroid and exceptionally slow rotator from the middle region of the asteroid belt , approximately 5 kilometers in diameter. 14436 Morishita Discovery [1] Discovered   by K. Endate K. Watanabe Discovery   site Kitami Obs. D

#11 599 Luisa

Luisa ( minor planet designation : 599 Luisa ) is a minor planet orbiting the Sun . 599 Luisa Discovery Discovered   by Joel Hastings Metcalf Discovery   site Taunton, Massachusetts Discovery   date 25 April 1906 Designations MPC   designation (599) Luisa Alternative designations 1906 UJ Orbital cha

#12 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

#13 1922 Zulu

1922 Zulu , provisional designation 1949 HC , is a carbonaceous asteroid in a strongly unstable resonance with Jupiter, located in the outermost regions of the asteroid belt , and approximately 20 kilometers in diameter. It was discovered on 25 April 1949, by South African astronomer Ernest Johnson


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Book / Book


#1 Star catalogue

A star catalogue is an astronomical catalogue that lists stars . In astronomy , many stars are referred to simply by catalogue numbers. There are a great many different star catalogues which have been produced for different purposes over the years, and this article covers only some of the more frequ

#2 Gaia catalogues

The Gaia catalogues are star catalogues created using the results obtained by Gaia space telescope. Catalogues consisting of data from the Gaia misson. The catalogues are released in stages that will contain increasing amounts of information; the early releases also miss some stars, especially faint


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Comet / Comet


#1 Comet Arend–Roland

Comet Arend–Roland was discovered on November 8, 1956 by Belgian astronomers Sylvain Arend and Georges Roland on photographic plates. As the eighth comet found in 1956, it was named Arend–Roland 1956h after its discoverers. Because it was the third comet to pass through perihelion during 1957, it wa

#2 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

#3 67P/Churyumov–Gerasimenko

67P/Churyumov–Gerasimenko (abbreviated as 67P or 67P/C–G ) is a Jupiter-family comet , [10] originally from the Kuiper belt , [11] with a current orbital period of 6.45 years, [1] a rotation period of approximately 12.4 hours [9] and a maximum velocity of 135,000   km/h (38   km/s; 84,000   mph) . [

#4 C/2007 E2 (Lovejoy)

C/2007 E2 (Lovejoy) is a non-periodic comet discovered by Terry Lovejoy on 15 March 2007. Its perihelion was 27 March 2007, while its closest approach to Earth was 25 April 2007 in Hercules at a distance of 0.44 AU . Maximum apparent magnitude was approximately +8. [2] Astronomical object For other


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Galaxy / Galaxy


#1 NGC 4098

NGC 4098 is an interacting [2] pair of spiral galaxies [2] [3] located 330 million light-years away [3] in the constellation Coma Berenices . [4] NGC 4098 was discovered by astronomer William Herschel on April 26, 1785. It was then rediscovered by Hershel on December 27, 1786 was listed as NGC 4099.

#2 NGC 3805

NGC 3805 is a lenticular galaxy located about 330 million light-years away [2] in the constellation Leo . [3] The galaxy was discovered by astronomer William Herschel on April 25, 1785. [4] NGC 3805 is a member of the Leo Cluster . [5] [6] Lenticular galaxy in the constellation Leo NGC 3805 SDSS ima

#3 UGC 8335

UGC 8335 ( Arp 238 ) is a pair of strongly interacting spiral galaxies . They have been distorted by extreme tidal forces , creating prominent tidal tails and a bridge of gas and stars between the galaxies. [4] [5] Pair of strongly interacting galaxies in Ursa Major UGC 8335 An image of UGC 8335 tak


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Institution / Institution


#1 Urania Sternwarte

Urania Sternwarte is a public observatory in the Lindenhof quarter of Zürich , Switzerland . Its name Urania refers to the muse of astronomy in Greek mythology . Public observatory in Zürich Observatory Urania Sternwarte Organization Urania-Sternwarte Zürich AG Location Zurich , Switzerland Coordina

#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 Starkenburg Observatory

The Starkenburg Observatory ( German : Starkenburg-Sternwarte ) is an astronomical observatory in Heppenheim , Germany. It was founded in 1970, and currently has about 150 members. [2] [3] Observatory Starkenburg Observatory Named after Starkenburg   Observatory   code 611   Location Starkenburg , G

#4 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

#5 Robinson Observatory

The Robinson Observatory is an astronomical observatory owned and operated by the University of Central Florida College of Sciences in Orlando , Florida , USA . [1] Observatory Robinson Observatory Organization University of Central Florida College of Sciences Location Orlando , FL , United States C

#6 Creighton University Observatory

Creighton University Observatory was located on the Creighton University campus in Omaha , Nebraska , United States. It was the first observatory in Omaha, and the second in Nebraska. It was used primarily for the instruction of students, though the directors did do some research in the observatory.

#7 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

#8 Ametlla de Mar Observatory

Ametlla de Mar Observatory is an astronomical observatory situated in L'Ametlla de Mar in the autonomous Catalonia region of Spain. [1] It has received the IAU observatory code 946 and is operated by Catalan astronomer Jaume Nomen . The observatory participates in the "Unicorn Project" and in the Mi

#9 Andrushivka Astronomical Observatory

Andrushivka Astronomical Observatory ( Ukrainian : Андрушівська астрономічна обсерваторія ) is a private astronomical observatory in the town suburbs of Andrushivka , Zhytomyr Oblast , Ukraine . It was established in 2001. [2] The founder and director of the observatory is Yuri Ivashchenko . The obs

#10 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

#11 Kielder Observatory

Kielder Observatory is an astronomical observatory located in Kielder Forest , Northumberland , England . It is situated high upon Black Fell overlooking Kielder Water near the Scottish border , and half a mile up a forest track from James Turrell's Kielder Skyspace . The site was chosen due to its

#12 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

#13 LIGO

The Laser Interferometer Gravitational-Wave Observatory ( LIGO ) is a large-scale physics experiment and observatory designed to detect cosmic gravitational waves and to develop gravitational-wave observations as an astronomical tool. [1] Two large observatories were built in the United States with

#14 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) .

#15 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

#16 National Astronomical Observatories of China

The National Astronomical Observatories, Chinese Academy of Sciences (NAOC , Chinese : 中国科学院国家天文台 ; pinyin : Zhōngguó Kēxuéyuàn Guójiā Tiānwéntái ) is an astronomical research institute operated by Chinese Academy of Sciences , along with Shanghai Astronomical Observatory , Purple Mountain Observato


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Meteorite / Meteorite


#1 Sutter's Mill meteorite

The Sutter's Mill meteorite is a carbonaceous chondrite which entered the Earth's atmosphere and broke up at about 07:51 Pacific Time on April 22, 2012, with fragments landing in the United States. [6] [7] The name comes from Sutter's Mill , a California Gold Rush site, near which some pieces were r

#2 Bovedy (meteorite)

Bovedy is a meteorite that fell in the area of Bovedy, Northern Ireland , on April 25 1969. After entering the atmosphere over the Bristol Channel , it traversed Wales and the Irish Sea before landing near Limavady . [2] Bovedy Type Chondrite Class Ordinary chondrite Group L3 Country United Kingdom


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Researcher / Researcher


#1 Anders Planman

Anders Planman (1724 – 25 April 1803) was a Finnish astronomer, professor of physics and mathematician. He was one of the first people to make systematical astronomical observations in Finland.

#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 Florian Goebel

Karl Florian Goebel (18 October 1972 — 10 September 2008) was a German astrophysicist attached to the Max Planck Institute for Physics in Munich . He had also been a member of DESY , a German-based research center that develops and runs several particle accelerators and detectors , most notably the

#4 Edward Joshua Cooper

Edward Joshua Cooper (May 1798 – 23 April 1863) [1] was an Irish landowner, politician and astronomer from Markree Castle in County Sligo . He sat in the House of Commons of the United Kingdom from 1830 to 1841 and from 1857 to 1859, but is best known for his astronomy, and as the creator of Markree

#5 Ernest Leonard Johnson

Ernest Leonard Johnson (1891–1977) was a South African astronomer and a former staff member of the Union Observatory in Johannesburg, South Africa. He is known for the discovery of 18 asteroids between 1946–1951, as well as several comets . [1] On 25 August 1949, he discovered 48P/Johnson , a period

#6 Bernard Mills

Bernard Yarnton Mills AC , FRS , [1] FAA , DSc (Eng) (8 August 1920 – 25 April 2011) was an Australian engineer and a pioneer of radio astronomy in Australia, responsible for the design and implementation of the Mills Cross Telescope and the Molonglo Cross Telescope . Bernard Mills Mills at the Inte

#7 Pankaj Joshi (physicist)

Pankaj Joshi (born 25 April 1953) is an Indian physicist and cosmologist whose research is mainly focused on areas of gravitational collapse and naked singularities . [1] He has published over 200 papers in national and international journals. Joshi currently holds the position of provost at Charota

#8 George van den Bergh

George van den Bergh (25 April 1890 in Oss – 3 October 1966 in Oegstgeest ) was a Dutch law professor and amateur astronomer. Dutch politician In this Dutch name , the surname is van den Bergh , not Bergh . Van den Bergh (ca. 1920) Van den Bergh was the son of Samuel van den Bergh , one of the found

#9 Gérard de Vaucouleurs

Gérard Henri de Vaucouleurs (25 April 1918 – 7 October 1995) [2] was a French astronomer . French astronomer Gérard de Vaucouleurs Born Gérard Henri de Vaucouleurs ( 1918-04-25 ) 25 April 1918 Paris, France Died 7 October 1995 (1995-10-07) (aged   77) Austin, Texas Nationality   France Alma   mater

#10 Jim Peebles

Phillip James Edwin Peebles CC OM FRS (born April 25, 1935) is a Canadian - American astrophysicist , astronomer, and theoretical cosmologist who is currently the Albert Einstein Professor in Science , Emeritus, at Princeton University . [1] [2] He is widely regarded as one of the world's leading th

#11 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

#12 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

#13 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

#14 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

#15 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

#16 Albert Le Sueur

Adolphus Albert Le Sueur (8 December 1849 – 25 April 1906), often known as Albert Le Sueur , was an astronomer known for his early involvement with the Great Melbourne Telescope and his preliminary use of astronomical spectroscopy .

#17 Anders Celsius

Anders Celsius ( Swedish pronunciation:   [ˈânːdɛʂ ˈsɛ̌lːsɪɵs] ; 27 November 1701   – 25 April 1744) [1] was a Swedish astronomer , physicist and mathematician. He was professor of astronomy at Uppsala University from 1730 to 1744, but traveled from 1732 to 1735 visiting notable observatories in Ger

#18 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

#19 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

#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 EV Lacertae

EV Lacertae (EV Lac, Gliese 873, HIP 112460) is a faint red dwarf star 16.5 light years away in the constellation Lacerta . It is the nearest star to the Sun in that region of the sky, although with an apparent magnitude of 10, it is only barely visible with binoculars . EV Lacertae is spectral type

#2 Barnard's Star

Barnard's Star / ˈ b ɑːr n ər d z / is a red dwarf about six light-years from Earth in the constellation of Ophiuchus . It is the fourth-nearest-known individual star to the Sun after the three components of the Alpha Centauri system, and the closest star in the northern celestial hemisphere . [16]

#3 SN 1998bw

SN 1998bw was a rare broad-lined Type Ic [1] gamma ray burst supernova detected on 26 April 1998 in the ESO 184-G82 spiral galaxy , which some astronomers believe may be an example of a collapsar ( hypernova ). [2] The supernova has been linked to GRB 980425 , which was detected on 25 April 1998, th

#4 Sirius

Sirius is the brightest star in the night sky . Its name is derived from the Greek word Σείριος , or Seirios , meaning lit. 'glowing' or 'scorching'. The star is designated α Canis Majoris , Latinized to Alpha Canis Majoris , and abbreviated Alpha CMa or α CMa . With a visual apparent magnitude of −


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