Sentry (sistema de monitoramento)

Gráfico de órbitas de asteroides conhecidos potencialmente perigosos

Sentry (Sentinela) é um programa de computador desenvolvido para analisar automaticamente os catálogos astronômicos em busca de asteroides que no futuro possam colidir com a Terra. O programa analisa os catálogos para potenciais colisões nos próximos 100 anos.[1] Sempre que o programa detecta uma possível colisão, ela é analisada e os resultados são imediatamente publicado no Programa Near Earth Object.[1]

Os objetos mais notáveis na página de risco incluem (principais asteroides listados): (29075) 1950 DA, 99942 Apophis, 101955 Bennu, (410777) 2009 FD, 1994 WR12, 2010 RF12 e 2006 JY26[1] Alguns asteroides notáveis ​​removido do Sentry nos últimos anos incluem: 2007 VK184, 2013 BP73, 2008 CK70, 2013 TV135, 2011 BT15, 367943 Duende, e (367789) 2011 AG5.

Números

Em junho de 2020, havia mais de 23 000 objetos próximos à Terra, dos quais cerca de 1 023 asteroides estão listados na tabela de risco.[1] Cerca de 95% dos objetos na tabela de risco são muito pequenos para serem qualificados como objetos potencialmente perigosos (OPO), porque têm menos de 140 metros de diâmetro ou têm uma magnitude absoluta inferior a 22. Em junho de 2020, apenas cerca de 38 objetos na tabela de risco são grandes o suficiente para serem qualificadas como OPO.[1] Estima-se que cerca de 700 desses asteroides próximos à Terra listados em risco sejam aproximadamente do tamanho do meteoro de Tcheliabinsk (H> 26), que não matou ninguém, mas teve 1 491 feridos não diretos. Mais de 2 490 asteroides foram removidos da tabela de risco desde seu lançamento em 2002.[2]

Os únicos dois cometas que apareceram brevemente na Tabela Sentry de Risco são o 197P/LINEAR (2003 KV2) e o 300P/Catalina (2005 JQ5).[2]

Referências

  1. ↑ a b c d e «Sentry Risk Table» (em inglês). NASA/JPL Near-Earth Object Program Office. Consultado em 18 de novembro de 2014 
  2. ↑ a b «Sentry: Earth Impact Monitoring». cneos.jpl.nasa.gov. Consultado em 26 de outubro de 2020 

Ligações externas

Read other articles:

Tim nasional bola voli putra Italia

ItaliaBerkas:Logovolleyitalia.pngJulukanGli Azzurri (Si Biru)AsosiasiFederazione Italiana Pallavolo (dalam bahasa Italia)KonfederasiCEV (Eropa)Pelatih Ferdinando De GiorgiPeringkat FIVB? (as of 15 September 2023)Kostum Kandang Tandang Ketiga OlimpiadePenampilan12 (Pertama kali pada 1976)Hasil terbaik (1996, 2004, 2016)Kejuaraan DuniaPenampilan18 (Pertama kali pada 1949)Hasil terbaik (1990, 1994, 1998)Piala DuniaPenampilan7 (Pertama kali pada 1989)Hasil terbaik (1995)Kejuaraan EropaP...

 

British Phonographic Industry

Si ce bandeau n'est plus pertinent, retirez-le. Cliquez ici pour en savoir plus. Cet article ne cite pas suffisamment ses sources (novembre 2014). Si vous disposez d'ouvrages ou d'articles de référence ou si vous connaissez des sites web de qualité traitant du thème abordé ici, merci de compléter l'article en donnant les références utiles à sa vérifiabilité et en les liant à la section « Notes et références » En pratique : Quelles sources sont attendues ? C...

 

Eric J. Sharpe

Eric John Sharpe (19 September 1933 – 19 October 2000) was the founding Professor of Religious Studies at the University of Sydney, Australia. He was a major scholar in the phenomenology of religion, the history of modern Christian mission, and inter-religious dialogue. Early life and education Sharpe was born in a working-class family in Lancaster, England. Aged 11, he won a scholarship as a non-boarding student at the Royal Lancaster Grammar School. His favourite sports were rowing and lo...

Armin Thurnher

Armin Thurnher (2018) Armin Thurnher (* 21. Februar 1949 in Bregenz) ist ein österreichischer Journalist und Publizist. Er ist Herausgeber und Chefredakteur der Wiener Stadtzeitung Falter. Inhaltsverzeichnis 1 Leben 2 Werke 3 Auszeichnungen 4 Literatur 5 Weblinks 6 Einzelnachweise Leben Nach Studium der Anglistik und Amerikanistik (1967/68) am Wagner College in New York und ab 1968 der Germanistik und Theaterwissenschaften in Wien – die ohne Abschluss blieben – wurde Thurnher 1977 Mitgli...

 

Transcendence (2014 film)

2014 film directed by Wally Pfister TranscendenceTheatrical release posterDirected byWally PfisterWritten byJack PaglenProduced by Andrew A. Kosove Broderick Johnson Kate Cohen Marisa Polvino Annie Marter David Valdes Aaron Ryder Starring Johnny Depp Morgan Freeman Rebecca Hall Kate Mara Cillian Murphy Cole Hauser Paul Bettany CinematographyJess HallEdited byDavid RosenbloomMusic byMychael DannaProductioncompanies Alcon Entertainment DMG Entertainment Straight Up Films Distributed by Warner B...

 

1982–83 St. Francis Terriers men's basketball team

American college basketball season 1982–83 St. Francis Terriers men's basketballConferenceECAC MetroDivisionNorth DivisionRecord10–18 (7–7 ECAC Metro)Head coachGene Roberti (4th season)Home arenaGeneroso Pope Athletic ComplexSeasons← 1981–821983–84 → 1982–83 ECAC Metro men's basketball standings vte Conf Overall Team W   L   PCT W   L   PCT North Long Island 11 – 3   .786 20 – 9   .690 Fairleigh Dickinson 9 ...

Oratório dos Quarenta Mártires

Oratório dos Quarenta Mártires Oratório dos Quarenta MártiresOratório dos Quarenta Mártires, bem na entrada da igreja de Santa Maria Antiqua Tipo Oratório cristão Geografia País Itália Cidade Roma Localização Região VIII - Fórum Romano Coordenadas Coordenadas: 41° 53' 28.86 N 12° 29' 9.15 E41° 53' 28.86 N 12° 29' 9.15 E Oratório dos Quarenta MártiresOratório dos Quarenta Mártires Oratório dos Quarenta Mártires (em italiano: Oratorio dei ...

 

Ngemblok

Artikel ini sebatang kara, artinya tidak ada artikel lain yang memiliki pranala balik ke halaman ini.Bantulah menambah pranala ke artikel ini dari artikel yang berhubungan atau coba peralatan pencari pranala.Tag ini diberikan pada Oktober 2022. Ngemblok adalah suatu tradisi dimana pihak wanita yang melamar laki-laki. Tradisi ngemblok ini sudah menjadi adat di daerah pesisir jawa khususnya Kabupaten Rembang, Tuban, dan lamongan. Tradisi yang dilangsungkan pada saat acara ngemblok, keluarga pih...

 

Голова Тереона

Голова Тереоналатис. «Tereona galva» Жанр драмаРежисер Варіс БраслаСценарист Ерік ЛансУ головних ролях Юріс БарткевичАнда АлбужеЯніс ЄкабсонсОператор Давіс СіманісКомпозитор Імант КалниньшХудожник Ієва РомановаКінокомпанія Ризька кіностудіяТривалість 82 хв.Мова російсь...

Ângelo Gabriel

Nama ini menggunakan cara penamaan Portugis. Nama keluarga pertama atau maternalnya adalah Borges dan nama keluarga kedua atau paternalnya adalah Damaceno. Ângelo Gabriel Ângelo bermain untuk Santos pada 2022Informasi pribadiNama lengkap Ângelo Gabriel Borges DamacenoTanggal lahir 21 Desember 2004 (umur 18)Tempat lahir Brasília, BrasilTinggi 174 cm (5 ft 9 in)[1]Posisi bermain Gelandang sayapInformasi klubKlub saat ini Strasbourg(dipinjam dari Chelsea)Nomor...

 

Perisher Ski Resort

Ski resort in New South Wales, Australia For other uses, see Perisher. PerisherMount Perisher at 2,054 m (6,739 ft)LocationPerisher ValleyNearest major cityCanberraCoordinates36°24′S 148°25′E / 36.4°S 148.41°E / -36.4; 148.41Top elevation2,054 metres (6,739 ft)Base elevation1,720 metres (5,640 ft)Skiable area1,245 hectares (3,080 acres)Runs 42% Beginner 45% Intermediate 12% AdvancedLongest run~4 kilometres (2.5 mi) (Top of Perisher...

 

Harry Potter and the Chamber of Secrets

1998 fantasy novel by J. K. Rowling This article is about the book. For the film, see Harry Potter and the Chamber of Secrets (film). For other uses, see Chamber of Secrets (disambiguation). Harry Potter and the Chamber of Secrets Jacket art of the original UK editionAuthorJ. K. RowlingIllustratorCliff Wright (first edition)CountryUnited KingdomLanguageEnglishSeriesHarry PotterRelease number2nd in seriesGenreFantasySet inUnited KingdomPublisherBloomsbury (UK)Publication date2 July 1998Pa...

The Best of Ari Lasso

The Best ofAlbum hit terbaik karya Ari LassoDirilis2 Januari 2007Direkam2000-2007GenrePopLabelAquarius MusikindoKronologi Ari Lasso Selalu Ada (2006)Selalu Ada2006 The Best of (2007) Yang Terbaik (2012)Yang Terbaik2012 The Best of adalah album kompilasi pertama oleh Ari Lasso, yang dirilis pada tahun 2007. Lagu utamanya ialah Aku dan Dirimu dengan Bunga Citra Lestari. Lagu dalam album ini merupakan gabungan dari album sebelumnya, serta lagu terbaru Ari Lasso. Daftar lagu Aku dan Dirimu (b...

 

NHL 100 Classic

Outdoor National Hockey League game Not to be confused with NHL Centennial Classic. NHL 100 Classic 123 Total Montreal Canadiens 000 0 Ottawa Senators 012 3 DateDecember 16, 2017VenueTD Place StadiumCityOttawa, OntarioAttendance33,959 The NHL 100 Classic (branded as the Scotiabank NHL 100 Classic for sponsorship reasons) was a regular season outdoor National Hockey League (NHL) game held on December 16, 2017. The game featured the Ottawa Senators playing the Montreal Canadiens at TD Place Sta...

 

Dwarkadhish Temple

Temple dedicated to Krishna in Gujarat, India For Mathura temple, see Dwarkadheesh temple Mathura. Dwarkadheesh TempleThe temple shikharas with the entrance in frontReligionAffiliationHinduismDeityKrishnaFestivalsKrishna JanmashtamiLocationLocationDwarkaStateGujaratCountryIndiaLocation in GujaratGeographic coordinates22°14′16.39″N 68°58′3.22″E / 22.2378861°N 68.9675611°E / 22.2378861; 68.9675611ArchitectureTypeTempleStyleMāru-Gurjara architectureCompleted1...

Henry of Valenciennes

First page of Henry's chronicle Henry of Valenciennes was an early 13th-century French writer, historian and chronicler of the Latin Empire. Henry of Valenciennes was a chronicler under Henry of Flanders who left for the Fourth Crusade with the army of his patron. In 1204, following the capture of Constantinople by the Franco-Venetian forces, he became a canon in the Hagia Sophia. In 1206, the year of his patron's accession to the throne of the Latin Empire, he was tasked with compiling a chr...

 

Ninotchka

NinotchkaGreta Garbo e Melvyn DouglasTitolo originaleNinotchka Paese di produzioneStati Uniti d'America Anno1939 Durata110 min Dati tecniciB/Nrapporto: 1,37 : 1 Generecommedia RegiaErnst LubitschJohn Waters (regista 2a unità) Soggettoda una storia di Melchior Lengyel SceneggiaturaCharles Brackett, Billy Wilder, Walter Reisch ProduttoreSidney Franklin Produttore esecutivoErnst Lubitsch Casa di produzioneMetro-Goldwyn-Mayer FotografiaWilliam H. Daniels MontaggioGene Ruggiero MusicheWerner...

 

Renewable Transport Fuel Obligation

UK requirement on fuel suppliers This article needs to be updated. Please help update this article to reflect recent events or newly available information. (October 2015) UK figures for the carbon intensity of bioethanol and fossil fuels. This graph assumes that all bioethanols are burnt in their country of origin and that previously existing cropland is used to grow the feedstock. No indirect land use changes are included.[1] Biodiesel sample The Renewable Transport Fuel Obligation (...

Elsie MacGill

Canadian aeronautical engineer (1905–1980) Elsie MacGillOCMacGill during her CC&F yearsBorn(1905-03-27)March 27, 1905Vancouver, British Columbia, CanadaDiedNovember 4, 1980(1980-11-04) (aged 75)Cambridge, Massachusetts, USOther namesQueen of the HurricanesEducationBachelor of Applied Science in Engineering, University of Toronto (1927)Master of Science in Engineering (aeronautics), University of Michigan (1929)Doctoral studies at MIT in Cambridge (1932–1934)OccupationsAerona...

 

الغواصة الألمانية يو-151 (1940)

يو-151 الجنسية  ألمانيا النازية الشركة الصانعة دويتشه فيرك[1]  المالك  كريغسمارينه المشغل كريغسمارينه[2]  المشغلون الحاليون وسيط property غير متوفر. المشغلون السابقون وسيط property غير متوفر. التكلفة وسيط property غير متوفر. منظومة التعاريف الاَلية للسفينة وسيط property غ...

 

Strategi Solo vs Squad di Free Fire: Cara Menang Mudah!