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langs: 25 февраля [ru] / february 25 [en] / 25. februar [de] / 25 février [fr] / 25 febbraio [it] / 25 de febrero [es]

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

Asteroid / Asteroid


#1 2021 RR205

2021 RR 205 is an extreme trans-Neptunian object and sednoid discovered by astronomers Scott Sheppard , David Tholen , and Chad Trujillo with the Subaru Telescope at Mauna Kea Observatory on 5 September 2021. It resides beyond the outer extent of the Kuiper belt on a distant and highly eccentric orb

#2 2016 WF9

2016 WF 9 is a dark, sub-kilometer asteroid and suspected extinct comet , classified as near-Earth object and potentially hazardous asteroid of the Apollo group . [3] 2016 WF 9 Artist's rendition of 2016 WF 9 Discovery [1] Discovered   by NEOWISE Discovery   site Earth orbit Discovery   date 27 Nove

#3 265 Anna

Anna ( minor planet designation : 265 Anna ) is a typical Main belt asteroid . 265 Anna A three-dimensional model of 265 Anna based on its light curve Discovery Discovered   by Johann Palisa Discovery   date 25 February 1887 Designations MPC   designation (265) Anna Pronunciation / ˈ æ n ə / [1] Nam

#4 (523692) 2014 EZ51

(523692) 2014 EZ 51 , prov. designation : 2014 EZ 51 , is a large trans-Neptunian object in the scattered disc , approximately 700 kilometres (430 miles) in diameter. It was discovered on 18 April 2010, by the Pan-STARRS 1 survey at Haleakala Observatory , Hawaii, United States. [1] (523692) 2014 EZ

#5 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

#6 2020 CD3

2020 CD 3 (also 2020CD3 or CD3 for short) [11] [12] is a tiny near-Earth asteroid (or minimoon ) that ordinarily orbits the Sun but makes close approaches to the Earth–Moon system, in which it can temporarily enter Earth orbit through temporary satellite capture (TSC). It was discovered at the Mount

#7 324 Bamberga

Bamberga ( minor planet designation : 324 Bamberga ) is one of the largest asteroids in the asteroid belt . It was discovered by Johann Palisa on 25 February 1892 in Vienna . It is one of the top-20 largest asteroids in the asteroid belt. Apart from the near-Earth asteroid Eros , it was the last ast

#8 (307261) 2002 MS4

(307261) 2002 MS 4 is a large classical Kuiper belt object and a possible dwarf planet in the Kuiper belt , a region of icy planetesimals beyond Neptune . [13] It was discovered in 2002 by Chad Trujillo and Michael Brown , and has precovery images back to 8 April 1954. [2] Classical Kuiper belt obje

#9 2012 BX34

2012 BX 34 is a small Aten asteroid that made one of the closest recorded asteroid close approaches of Earth on 27 January 2012. It passed within 0.0004371   AU (65,390   km ; 40,630   mi ) of Earth during its closest approach at 15:25 GMT. [6] 2012 BX 34 measures around 8 meters (26   ft) across; i

#10 Ceres (dwarf planet)

Ceres ( / ˈ s ɪər iː z / ; [17] minor-planet designation : 1 Ceres ) is a dwarf planet in the asteroid belt between the orbits of Mars and Jupiter . It was the first asteroid discovered, on 1 January 1801, by Giuseppe Piazzi at Palermo Astronomical Observatory in Sicily, and announced as a new plane

#11 743 Eugenisis

743 Eugenisis is a minor planet orbiting the Sun that was discovered by German astronomer Franz Kaiser in 1913. 743 Eugenisis Discovery Discovered   by Franz Kaiser Discovery   site Heidelberg Discovery   date 25 February 1913 Designations MPC   designation (743) Eugenisis Pronunciation / juː ˈ dʒ ɛ

#12 2000 DG8

2000 DG 8 is a dark centaur and damocloid on a retrograde and highly eccentric orbit from the outer region of the Solar System . [5] It was first observed on 25 February 2000, by astronomers with the LINEAR program at the Lincoln Lab's ETS near Socorro, New Mexico, United States. It has not been obs

#13 2010 FX86

2010 FX 86 , also written 2010 FX86 , is a relatively bright trans-Neptunian object [2] with an absolute magnitude of about 4.65. [2] [3] [6] 2010 FX 86 Discovery [1] Discovered   by Observers S. S. Sheppard, A. Udalski, I. Soszynski Discovery   site Las Campanas Observatory , Chile Discovery   date

#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

#15 866 Fatme

866 Fatme ( prov. designation : A917 DG or 1917 BQ ) is a large background asteroid , approximately 86 kilometers (53 miles) in diameter, located in the outer region of the asteroid belt . It was discovered by German astronomer Max Wolf at the Heidelberg-Königstuhl State Observatory on 25 February 1

#16 877 Walküre

877 Walküre ( prov. designation : A915 RV or 1915 Σ7 ) is a dark background asteroid from the inner regions of the asteroid belt , approximately 38 kilometers (24 miles) in diameter. It was discovered on 13 September 1915, by Russian astronomer Grigory Neujmin at the Simeiz Observatory on the Crimea

#17 867 Kovacia

867 Kovacia ( prov. designation : A917 DH or 1917 BS ) is an elongated, dark asteroid and member of the Hygiea family from the outer regions of the asteroid belt . It was discovered on 25 February 1917, by astronomer Johann Palisa at the Vienna Observatory in Austria. [1] The carbonaceous C / B-type


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Comet / Comet


#1 114P/Wiseman–Skiff

114P/Wiseman–Skiff is a periodic comet in the Solar System . Periodic comet with 6 year orbit 114P/Wiseman-Skiff Discovery Discovered by Jennifer Wiseman Brian A. Skiff Discovery date December 28, 1986 Alternative designations 1986 Y1; 1987b; 1993 IX; 1993u; 1993 X2 Orbital characteristics A Epoch M

#2 C/2018 Y1 (Iwamoto)

C/2018 Y1 (Iwamoto) is a near-parabolic comet with a retrograde orbit discovered on December 18, 2018, by Japanese amateur astronomer Masayuki Iwamoto . [1] It passed closest to Earth on February 13, 2019. [2] It is expected to reach a magnitude of between 6.5 and 7.5, visible in binoculars or a sma

#3 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

#4 5D/Brorsen

5D/Brorsen (also known as Brorsen's Comet or Comet Brorsen ) was a periodic Jupiter-family comet discovered on February 26, 1846, by Danish astronomer Theodor Brorsen . The perihelion of 5D/Brorsen was February 25, just a day before its discovery, and it passed closest to Earth on March 27, at a dis

#5 Comet West

Comet West , formally designated C/1975 V1 , 1976 VI , and 1975n , was a comet described as one of the brightest objects to pass through the inner Solar System in 1976. It is often described as a " great comet ." [3] Icy small Solar System body; passed closest to Earth in 1976 C/1975 V1 (West) Comet


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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 List of solar eclipses visible from Russia

This list of solar eclipses visible from Russia enumerates the solar eclipses that have been seen and will be seen in Russia . Lists of solar eclipses Geometry of a total solar eclipse (not to scale) Solar eclipses in antiquity Solar eclipses in the Middle Ages Modern history 16th 17th 18th 19th 20t

#3 Thirty Meter Telescope

The Thirty Meter Telescope ( TMT ) is a planned extremely large telescope (ELT) [5] [6] that has become controversial due to its location on Mauna Kea , [7] [8] [9] [10] on the island of Hawaiʻi . The TMT would become the largest visible-light telescope on Mauna Kea. [11] [12] Future observatory in

#4 Atacama Large Millimeter Array

The Atacama Large Millimeter/submillimeter Array ( ALMA ) is an astronomical interferometer of 66 radio telescopes in the Atacama Desert of northern Chile , which observe electromagnetic radiation at millimeter and submillimeter wavelengths . The array has been constructed on the 5,000   m (16,000  

#5 Ole Rømer Observatory

Ole Rømer Observatory ( Danish : Ole Rømer Observatoriet ) is an astronomical observatory and museum, built in 1911 and located in Aarhus , Denmark. It is operated by Aarhus University and functions both as a research and training laboratory for the university Institute for Physics and Astronomy and

#6 KAGRA

The Kamioka Gravitational Wave Detector ( KAGRA ), is a large interferometer designed to detect gravitational waves predicted by the general theory of relativity . KAGRA is a Michelson interferometer that is isolated from external disturbances: its mirrors and instrumentation are suspended and its l

#7 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

#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 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

#10 Hyper-Kamiokande

Hyper-Kamiokande is a neutrino observatory being constructed on the site of the Kamioka Observatory , near Kamioka , Japan . The project started in 2010 as a successor to Super-Kamiokande . It was ranked as among the 28 top priority projects of the Japanese government. Thirteen countries from three


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Researcher / Researcher


#1 Pietro Baracchi

Pietro Paolo Giovanni Ernesto Baracchi (25 February 1851 – 23 July 1926) was an Italian -born astronomer, active in Australia and Government Astronomer of Victoria (Australia) 1900-15. [1] Baracchi was born in Florence and took a degree in civil engineering. In 1876 he sailed for New Zealand , but s

#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 Margaretha Kirch

Margaretha Kirch (b. ca. 1703, d. after 1744) was a German astronomer. German astronomer

#4 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:

#5 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

#6 Maria Margaretha Kirch

Maria Margaretha Kirch ( née Winckelmann , in historic sources named Maria Margaretha Kirchin ; 25 February 1670 – 29 December 1720) was a German astronomer . She was one of the first famous astronomers of her period due to her writing on the conjunction of the sun with Saturn , Venus , and Jupiter

#7 Giovanni Domenico Cassini

Giovanni [lower-alpha 1] Domenico Cassini , also known as Jean-Dominique Cassini (8 June 1625 – 14 September 1712) was an Italian (naturalised French) [1] mathematician, astronomer and engineer . Cassini was born in Perinaldo , [2] [3] near Imperia , at that time in the County of Nice , part of the

#8 Zita Martins

Zita Carla Torrão Pinto Martins (born 1979), [1] [4] OSE , is a Portuguese astrobiologist , and an associate professor at Instituto Superior Técnico. [5] She was a Royal Society University Research Fellow (URF) [2] at Imperial College London . [6] Her research explores how life may have begun on Ear

#9 Attilio Colacevich

Attilio Colacevich (25 July 1906 – 24 August 1953) was an Italian astronomer . Italian astronomer Attilio Colacevich Attilio Colacevich Born ( 1906-07-25 ) 25 July 1906 Fiume , Austria-Hungary Died 24 August 1953 (1953-08-24) (aged   47) Naples , Italy Nationality Italian Alma   mater University of

#10 Christopher Wren

Sir Christopher Wren PRS FRS ( / r ɛ n / ; [2] 30 October 1632 [ O.S. 20 October ] – 8 March 1723 [ O.S. 25 February ]) [3] [4] was one of the most highly acclaimed English architects in history, as well as an anatomist , astronomer , geometer , and mathematician- physicist . [4] He was accorded res

#11 Claudio Casacci

Claudio Casacci (born 1958) is an Italian space scientist and amateur astronomer , [2] who is credited by the Minor Planet Center with the discovery of several main-belt asteroids between 1995 and 1998. [1] He works at Thales Alenia Space in Turin , Italy. [3] Minor planets discovered: 8   [1] see §

#12 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

#13 Jana Tichá

Jana Tichá (born 1965 in České Budějovice ) is a Czech astronomer and discoverer of minor planets . She studied at the University of Economics in Prague and graduated in 1987. In 1992 she was selected for the position of a director of the Kleť Observatory . Czech astronomer Jana Tichá with her ex-hu

#14 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

#15 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

#16 Thomas Wright (astronomer)

Thomas Wright (22 September 1711   – 25 February 1786) was an English astronomer , mathematician , instrument maker, architect and garden designer. He was the first to describe the shape of the Milky Way and to speculate that faint nebulæ were distant galaxies . English polymath For other uses, see

#17 Tsuneo Niijima

Tsuneo Niijima ( 新島 恒男 , Niijima Tsuneo , born 1955) is a Japanese farmer and amateur astronomer . [2] Minor planets discovered: 32   [1] see §   List of discovered minor planets He is a prolific discoverer of minor planets , credited by the Minor Planet Center with the discovery and co-discovery of

#18 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

#19 Felix Hormuth

Felix Hormuth (born 1975) is a German astronomer , working at the Max Planck Institute for Astronomy (MPIA) until 2016, and a prolific discoverer of minor planets . [2] [3] During his stay at the Calar Alto Observatory in Spain, he has discovered many asteroids, including a Jupiter trojan and two ne

#20 Marco Cavagna

Marco Cavagna (1958 – August 9, 2005) was an Italian amateur astronomer . [2] Italian astronomer Minor planets discovered: 19   [1] 7199 Brianza 28 March 1994 list   [A] 7848 Bernasconi 22 February 1996 list   [B] 8106 Carpino 23 December 1994 list   [C] 8935 Beccaria 11 January 1997 list   [C] 1377


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Science / Science


#1 High-Z Supernova Search Team

The High-Z Supernova Search Team was an international cosmology collaboration which used Type Ia supernovae to chart the expansion of the universe . The team was formed in 1994 by Brian P. Schmidt , then a post-doctoral research associate at Harvard University, and Nicholas B. Suntzeff , a staff ast

#2 Geologic Calendar

The Geologic Calendar is a scale in which the geological lifetime of the Earth is mapped onto a calendrical year; that is to say, the day one of the Earth took place on a geologic January 1 at precisely midnight, and today's date and time is December 31 at midnight. [1] On this calendar, the inferre

#3 Steady-state model

In cosmology , the steady-state model is an alternative to the Big Bang theory of evolution of the universe. In the steady-state model, the density of matter in the expanding universe remains unchanged due to a continuous creation of matter, thus adhering to the perfect cosmological principle , a pr


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Star / Star


#1 V1369 Centauri

V1369 Centauri also known as Nova Centauri 2013 was a bright nova in the constellation Centaurus that occurred in 2013. It was discovered on December 2, 2013 by amateur astronomer John Seach in Australia with a magnitude of 5.5. [5] [6] On December 14, 2013 it peaked at about magnitude 3.3, making i

#2 Betelgeuse

Betelgeuse is a red supergiant of spectral type M1-2 and one of the largest stars visible to the naked eye . It is usually the tenth-brightest star in the night sky and, after Rigel , the second-brightest in the constellation of Orion . It is a distinctly reddish, semiregular variable star whose app


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