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langs: 17 сентября [ru] / september 17 [en] / 17. september [de] / 17 septembre [fr] / 17 settembre [it] / 17 de septiembre [es]

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

Asteroid / Asteroid


#1 (458732) 2011 MD5

(458732) 2011 MD 5 is an Apollo near-Earth asteroid around 1.2 kilometers (0.75 miles) in diameter. It is the largest asteroid known to have passed closer than the Moon. [4] On 17 September 1918 the asteroid passed 0.00234   AU (350   thousand   km; 0.91   LD) from Earth [3] with a peak apparent mag

#2 1189 Terentia

1189 Terentia , provisional designation 1930 SG , is a carbonaceous Terentian asteroid from the outer regions of the asteroid belt , approximately 56 kilometers in diameter and the namesake of its family . The asteroid was discovered by Russian astronomer Grigory Neujmin at Simeiz Observatory on 17

#3 1122 Neith

1122 Neith / ˈ n iː ɪ θ / , [14] provisional designation 1928 SB , is a background asteroid from the central region of the asteroid belt , approximately 12 kilometers in diameter. It was discovered by Belgian astronomer Eugène Delporte at the Royal Observatory of Belgium in Uccle on 17 September 192

#4 Haumea

Haumea ( minor-planet designation 136108 Haumea ) is a dwarf planet located beyond Neptune 's orbit. [24] It was discovered in 2004 by a team headed by Mike Brown of Caltech at the Palomar Observatory in the United States and disputably also in 2005 by a team headed by José Luis Ortiz Moreno at the

#5 185 Eunike

Eunike ( minor planet designation : 185 Eunike ) is a dark and very large main-belt asteroid , with an approximate diameter of 157 kilometres. It has a primitive carbonaceous composition. 185 Eunike Discovery Discovered   by C. H. F. Peters , 1878 Discovery   date 1 March 1878 Designations MPC   des

#6 (481394) 2006 SF6

(481394) 2006 SF 6 is a sub-kilometer near-Earth object and potentially hazardous asteroid of the Aten group , approximately 300 meters (1,000 feet) in diameter. It was discovered on 17 September 2006, by the Catalina Sky Survey at Catalina Station in Arizona. [1] On 21 November 2019, it passed Eart

#7 2020 SO

2020 SO [lower-alpha 1] is a near-Earth object identified to be the Surveyor 2 Centaur rocket booster launched on 20 September 1966. The object was discovered by the Pan-STARRS 1 survey at the Haleakala Observatory on 17 September 2020. It was initially suspected to be an artificial object due to it

#8 (15789) 1993 SC

(15789) 1993 SC is a trans-Neptunian object of the plutino class. The discovery was made in 1993 at the La Palma Observatory with the Isaac Newton Telescope . It was the second plutino to receive an MPC number . [1] (15789) 1993 SC Discovery Discovered   by Iwan P. Williams , Alan Fitzsimmons , and

#9 (419624) 2010 SO16

(419624) 2010 SO 16 is a sub-kilometer asteroid in a co-orbital configuration with Earth, classified as near-Earth object and potentially hazardous asteroid of the Apollo group . It was discovered by the Wide-field Infrared Survey Explorer space telescope (WISE) on 17 September 2010. [1] [2] (419624

#10 (84922) 2003 VS2

(84922) 2003 VS 2 is a trans-Neptunian object discovered by the Near Earth Asteroid Tracking program on 14 November 2003. [1] Like Pluto , it is in a 2:3 orbital resonance with Neptune [3] [4] and is thus a plutino . Analysis of light-curve suggests that it is not a dwarf planet . [11] Trans-Neptuni

#11 2007 VE191

2007 VE 191 is a sub-kilometer asteroid , classified as near-Earth asteroid of the Apollo group that was listed on the Sentry Risk Table . [3] 2007 VE 191 Discovery [1] Discovered   by Mt. Lemmon Survey ( G96 ) Discovery   date 15 November 2007 Designations MPC   designation 2007 VE 191 Minor   plan

#12 2020 SL1

2020 SL 1 is a near-Earth asteroid of the Apollo group , discovered by the Pan-STARRS 1 survey at Haleakala Observatory , Hawaii on 18 September 2020. With an estimated diameter of 0.9–2.0   km (0.56–1.24   mi) , it is the largest potentially hazardous asteroid discovered in 2020. [8] 2020 SL 1 Disc

#13 1118 Hanskya

1118 Hanskya ( prov. designation : 1927 QD ) is a large background asteroid , approximately 77 kilometers (48 miles) in diameter, located in the outer regions of the asteroid belt . Discovered by Sergey Belyavsky and Nikolaj Ivanov in 1927, it was named after Russian astronomer Aleksey Hansky . The

#14 2017 SV13

2017 SV 13 is a centaur and damocloid on a retrograde and highly eccentric orbit from the outer region of the Solar System . It was first observed on 17 September 2017 by the Pan-STARRS survey at Haleakala Observatory in Hawaii, United States. [1] This unusual object measures approximately 1 kilomet

#15 82 Alkmene

Alkmene ( minor planet designation : 82 Alkmene ) is a main-belt asteroid . Alkmene was discovered by R. Luther on 7 November 1864 and named after Alcmene , the mother of Herakles in Greek mythology . Based on IRAS data, Alkmene is estimated to be about 61 kilometres (38   mi) in diameter. [3] A sat

#16 (143649) 2003 QQ47

(143649) 2003 QQ 47 , provisionally designated : 2003 QQ 47 , is a kilometer-sized asteroid and synchronous binary system , classified as near-Earth object and potentially hazardous asteroid of the Apollo group . It became briefly notable upon its discovery in late August 2003, when media outlets pl

#17 2006 RH120

2006 RH 120 is a tiny near-Earth asteroid [9] and fast rotator with a diameter of approximately 2–3 meters [7] that ordinarily orbits the Sun but makes close approaches to the Earth–Moon system around every twenty years, [10] when it can temporarily enter Earth orbit through temporary satellite capt

#18 2021 SG

2021 SG is a near-Earth asteroid , with an estimated diameter of 42 to 94 meters, that passed about half a lunar distance from Earth on 16 September 2021. It approached from the direction of the Sun, so it was invisible until a day later. [6] It completes its highly eccentric orbit in 2.24 years. 20

#19 345 Tercidina

Tercidina ( minor planet designation : 345 Tercidina ) is a large main-belt asteroid . It is classified as a C-type asteroid and is probably composed of carbonaceous material. 345 Tercidina A three-dimensional model of 345 Tercidina based on its light curve Discovery Discovered   by Auguste Charlois

#20 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


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Comet / Comet


#1 271P/van Houten–Lemmon

271P/van Houten–Lemmon (previously P/1960 S1 and P/2012 TB 36 ) is a short-period comet discovered in 1966 by Cornelis Johannes van Houten and Ingrid van Houten-Groeneveld on eight Palomar plates taken by Tom Gehrels between 24 September and 26 October 1960 as a hazy object of 17th magnitude . It wa

#2 6P/d'Arrest

6P/d'Arrest (also known as d'Arrest's Comet or Comet d'Arrest ) is a periodic Jupiter-family comet in the Solar System , orbiting between Mars and Jupiter. It passed 0.15124   AU (22,625,000   km ; 14,059,000   mi ) from the Earth on August 12, 1976. [4] The most recent perihelion passage took place

#3 Great Comet of 1882

The Great Comet of 1882 formally designated C/1882 R1 , 1882 II , and 1882b , was a comet which became very bright in September 1882. It was a member of the Kreutz Sungrazers , a family of comets which pass within 1   R ☉ of the Sun's photosphere at perihelion . [1] [2] The comet was bright enough t

#4 14P/Wolf

14P/Wolf is a periodic comet in the Solar System . Periodic comet with 8 year orbit 14P/Wolf Discovery Discovered by Max Wolf Discovery date September 17, 1884 Alternative designations 1884 S1; 1884 III; 1884c; 1891 J1; 1891 II; 1891b; 1898 IV; 1898f; 1912 I; 1911a; 1918 V; 1918b; 1925 X; 1925e; 193

#5 170P/Christensen

170P/Christensen is a periodic comet in the Solar System . It came to perihelion in September 2014 at about apparent magnitude 18. Periodic comet with 8 year orbit 170P/Christensen Discovery Discovered by Eric J. Christensen Discovery date June 17, 2005 Alternative designations P/2005 M1 Orbital cha

#6 C/2017 K2 (PanSTARRS)

C/2017 K2 (PanSTARRS) is an Oort cloud comet with an inbound hyperbolic orbit, discovered in May 2017 at a distance beyond the orbit of Saturn when it was 16   AU (2.4   billion   km) from the Sun. Precovery images from 2013 were located by July. [7] It had been in the constellation of Draco from Ju


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Galaxy / Galaxy


#1 NGC 262

NGC 262 (also known as Markarian 348 ) is a huge spiral galaxy in the cluster LGG 14 . [1] It is a Seyfert 2 spiral galaxy located 287 million light years away in the constellation Andromeda . [2] It was discovered on September 17, 1885 by Lewis A. Swift . Spiral galaxy in constellation Andromeda NG

#2 NGC 7028

NGC 7028 is the designation of a celestial object in the constellation of Delphinus . The object was supposedly discovered by the German astronomer Albert Marth on 17 September 1863. [3] However, its identification is uncertain, and the object is considered lost. [4] No galaxies or nebulous objects

#3 NGC 7130

NGC 7130 (also known as IC 5135 ) is a spiral galaxy located in the constellation Piscis Austrinus . It is located at a distance of circa 220 million light years from Earth, which, given its apparent dimensions, means that NGC 7130 is about 100,000 light years across. [1] It was discovered by John H

#4 NGC 759

NGC 759 is an elliptical galaxy located 230 million light-years away [2] in the constellation Andromeda . NGC 759 was discovered by astronomer by Heinrich d'Arrest on September 17, 1865. [3] It is a member of Abell 262 . [4] [5] [6] [7] [8] Elliptical galaxy in the constellation Andromeda NGC 759 2M

#5 NGC 7034

NGC 7034 is an elliptical galaxy located about 380 million light-years away in the constellation of Pegasus . [2] [3] It is part of a pair of galaxies that contains the nearby galaxy NGC 7033 . [4] NGC 7034 was discovered by astronomer Albert Marth on September 17, 1863. [5] Elliptical galaxy in the

#6 NGC 112

NGC 112 is a barred spiral galaxy located in the constellation Andromeda . It was discovered by American astronomer Lewis Swift on September 17, 1885. The galaxy lies approximately 295 million light-years from Earth, and is about 75,000 light-years in diameter. [4] Barred spiral galaxy in the conste

#7 NGC 7025

NGC 7025 is a spiral galaxy located about 210 million Light-years away from Earth in the constellation Delphinus . [2] [3] NGC 7025 is also classified as a LINER galaxy. [4] The galaxy has an estimated diameter of 161,830 light-years. [3] It was discovered by astronomer Albert Marth on September 17,

#8 NGC 6886

NGC 6886 is a planetary nebula in the constellation Sagitta . It was discovered by Ralph Copeland on September 17, 1884. [3] It is 4.6   ±   1.0 kiloparsec (15.0   ±   3.3   kly) distant from earth, and is composed of a hot central post-AGB star that has 55% of the Sun's mass yet 2700 ± 850 its lumi

#9 NGC 7033

NGC 7033 is a lenticular galaxy located about 390 million light-years away in the constellation of Pegasus . [2] [3] It is part of a pair of galaxies that contains the nearby galaxy NGC 7034 . [4] NGC 7033 was discovered by astronomer Albert Marth on September 17, 1863. [5] Lenticular galaxy in the

#10 NGC 7056

NGC 7056 is a barred spiral galaxy located about 225   million light-years away in the constellation of Pegasus . [2] [3] NGC 7056 was discovered by astronomer Albert Marth on September 17, 1863. It was then rediscovered by astronomer Truman Henry Safford on September 29, 1866. [4] Barred spiral gal


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Institution / Institution


#1 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

#2 Oak Ridge Observatory

The Oak Ridge Observatory ( ORO , code: 801 ), also known as the George R. Agassiz Station , is located at 42 Pinnacle Road, Harvard, Massachusetts . It was operated by the Center for Astrophysics | Harvard & Smithsonian as a facility of the Smithsonian Astrophysical Observatory (SAO) from 1933 unti

#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 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 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

#6 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

#7 Pine Mountain Observatory

Pine Mountain Observatory (PMO) is an astronomical observatory owned and operated by University of Oregon Department of Physics. The facility is located 26 miles (42   km) southeast of Bend, Oregon (USA) in the Deschutes National Forest near the summit of Pine Mountain . [1] Observatory Pine Mountai

#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 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

#10 Students for the Exploration and Development of Space

Students for the Exploration and Development of Space ( SEDS ) is a non-profit international student organization whose purpose is to drive space advocacy of space exploration and development through educational and engineering projects. [1] International student organization "SEDS" redirects here.

#11 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) .

#12 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

#13 International Astronautical Congress

Every year, the International Astronautical Federation with the support of the International Academy of Astronautics and the International Institute of Space Law (IISL), holds the International Astronautical Congress ( IAC ) which is hosted by one of the national society members of the IAF. Annual m

#14 Starlink Project

The Starlink Project , referred to by users as Starlink and by developers as simply The Project , was a UK astronomical computing project which supplied general-purpose data reduction software. Until the late 1990s, it also supplied computing hardware and system administration personnel to UK astron


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Meteorite / Meteorite


#1 Tau1 Gruis b

Tau 1 Gruis b , also known as HD 216435 b , is an extrasolar planet approximately 109 light-years away in the constellation of Grus (the Crane ). The planet was discovered orbiting the star Tau 1 Gruis in September 2002. It was calculated that the planet orbits its sun at an average distance of 2.7


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Planet / Planet


#1 Anglo-Australian Planet Search

The Anglo Australian Planet Search or ( AAPS ) is a long-term astronomical survey started in 1998 and continuing to the present. It is being carried out on the 3.9-metre Anglo-Australian Telescope (AAT) of the Anglo-Australian Observatory in Australia . The purpose of this survey is to catalog plane


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Researcher / Researcher


#1 Eugène Joseph Delporte

Eugène Joseph Delporte (10 January 1882   – 19 October 1955) was a Belgian astronomer born in Genappe . [2] [3] Belgian astronomer Minor planets discovered: 66   [1] see §   List of discovered minor planets He discovered a total of sixty-six asteroids . Notable discoveries include 1221 Amor (which l

#2 Hendrik van Gent

Hendrik van Gent (14 September 1899, Pernis – March 29, 1947, Amsterdam ) [2] was a Dutch astronomer . Dutch astronomer (1899–1947) In this Dutch name , the surname is van Gent , not Gent . Asteroids discovered: 39   [1] see §   List of discovered minor planets He moved to South Africa in 1928 in or

#3 William Herschel

Frederick William Herschel [2] [3] KH , FRS ( / ˈ h ɜːr ʃ əl , ˈ h ɛər -/ ; [4] German : Friedrich Wilhelm Herschel ; 15 November 1738   – 25 August 1822) was a German-born British [5] astronomer and composer . He frequently collaborated with his younger sister and fellow astronomer Caroline Hersche

#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 Satoru Otomo

Satoru Otomo ( 大友 哲 , Ōtomo Satoru, 19 December 1957, Mitaka ) is a Japanese dentist, amateur astronomer and a discoverer of minor planets . [2] Minor planets discovered: 148   [1] see §   List of discovered minor planets According to the Minor Planet Center , he is credited with the discovery of 14

#6 Andrea Dupree

Andrea Dupree is a senior astrophysicist at the Center for Astrophysics | Harvard & Smithsonian . [1] She is a Past-President of the American Astronomical Society , and served as the associate director of the Center for Astrophysics | Harvard & Smithsonian . Dr. Dupree also served as Head of the Sol

#7 Victor Anestin

Victor Anestin ( Romanian pronunciation:   [ˈviktor anesˈtin] ; 17 September 1875 – 5 November 1918) was a Romanian journalist, science popularizer, astronomer and science fiction writer. Victor Anestin Born ( 1875-09-17 ) 17 September 1875 Bacău , Romania Died 5 November 1918 (1918-11-05) (aged   4

#8 Fernand Rigaux

Fernand Rigaux (1905 – 21 September 1962) was a Belgian astronomer and observer of variable stars , minor planets and comets at the Royal Observatory at Uccle, Belgium . [2] [3] Belgian astronomer Minor planets discovered: 8   [1] 1292 Luce 17 September 1933 MPC 1378 Leonce 21 February 1936 MPC 1458

#9 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

#10 Konstantin Tsiolkovsky

Konstantin Eduardovich Tsiolkovsky ( Russian : Константи́н Эдуа́рдович Циолко́вский ; 17 September   [ O.S. 5 September ]   1857 – 19 September 1935) was a Russian and Soviet rocket scientist who pioneered astronautic theory . Along with the Frenchman Robert Esnault-Pelterie , the Germans Hermann Ob

#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 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 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 §  

#14 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

#15 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

#16 František Nušl

František Nušl ( Czech pronunciation: [ˈfrantɪʃɛk ˈnuʃl̩] ; 3 December 1867, in Jindřichův Hradec – 17 September 1951, in Prague ) was a Czech astronomer and mathematician . František Nušl (1930)

#17 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

#18 Zdeněk Moravec

Zdeněk Moravec (born 1968) is a Czech astronomer and astrophysicist . Czech astronomer Minor planets discovered: 93   [1] see §   List of discovered minor planets Zdeněk Moravec is a graduate from Charles University in Prague . He became a prolific discoverer of minor planets , during his stay at th

#19 Johann Georg Liebknecht

Johann Georg Liebknecht (23 April 1679 in Wasungen , Thuringia – 17 September 1749 in Giessen ) was a German theologian and scientist. He was professor of mathematics and theology at the Ludoviciana (University) in Giessen, Germany. Johann Georg Liebknecht German theologian and scientist This articl

#20 Henry E. Holt

Henry E. Holt (27 September 1929 - 5 May 2019) [2] was an American astronomer and prolific discoverer of minor planets and comets , who has worked as a planetary geologist at the United States Geological Survey and Northern Arizona University . [3] American astronomer (1929–2019) For other people na


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Star / Star


#1 Antares

Antares is the brightest star in the constellation of Scorpius . It has the Bayer designation α Scorpii , which is Latinised to Alpha Scorpii . Often referred to as "the heart of the scorpion", Antares is flanked by σ Scorpii and τ Scorpii near the center of the constellation. Distinctly reddish whe

#2 Rho Indi

ρ Indi , Latinised as Rho Indi , ( Bright Star designation HR 8701) is a yellow-hued star in the constellation Indus . With an apparent visual magnitude of +6.05 [2] it is, barely, a naked eye star, not visible in the northern hemisphere outside the tropics . Based upon an annual parallax shift of 3

#3 Tau1 Gruis

Tau 1 Gruis , Latinized from τ 1   Gruis, and catalogued as HD 216435 and HR 8700 , is a yellow-hued star approximately 106 light-years away [1] in the constellation of Grus (the Crane ). The star is visible to the naked eye for some people, placing it in the Bright Star Catalogue . In 2002, one ext

#4 Mizar and Alcor

Mizar and Alcor are two stars forming a naked eye double in the handle of the Big Dipper (or Plough) asterism in the constellation of Ursa Major . Mizar is the second star from the end of the Big Dipper's handle, and Alcor its fainter companion. The traditional name Mizar derives from the Arabic الم


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