Une comète périodique est une comète qui a été observée à plus d'un périhélie ou qui a une période orbitale inférieure à 200 ans, sinon elle est appelée comète non périodique[1]. La périodicité des comètes a été établie par Edmund Halley en 1705[2].
Les comètes périodiques ne reçoivent pas de désignation numérique avant d'avoir été observées à plus d'un périhélie. Dans quasiment tous les cas, les comètes sont nommées d'après leurs découvreurs (dans quelques cas, comme 2P/Encke et 27P/Crommelin, il s'agit de la personne ayant calculé leur orbite). Les orbites des comètes périodiques sont particulièrement difficiles à calculer à cause des perturbations possibles des planètes. Mais même dans ce cas, la trace de certaines comètes périodiques peut être perdue par suite d'un dégazage ou d'une fragmentation.
On catégorise parfois les comètes périodiques en plusieurs familles, dont celle des comètes de la famille de Jupiter, dont la période est comprise entre 5 et 20 ans, et la famille de Halley, pour lesquelles la période est comprise entre 20 et 200 ans.
Эта статья или раздел нуждается в переработке.Пожалуйста, улучшите статью в соответствии с правилами написания статей. (22 августа 2021)Внешняя политика Турецкой Республики Северного Кипра — это общий курс частично признанного государства Турецкой Республики Северного …
يفتقر محتوى هذه المقالة إلى الاستشهاد بمصادر. فضلاً، ساهم في تطوير هذه المقالة من خلال إضافة مصادر موثوق بها. أي معلومات غير موثقة يمكن التشكيك بها وإزالتها. (يوليو 2016) سباق النقاط للسيدات في بطولة الدراجات على المضمار الاختصاص سباق الدراجات على المضمار المنظَم الاتحاد الدو
National Museum CardiffDas National Museum Cardiff (walisisch: Amgueddfa Genedlaethol Caerdydd) ist ein Museum für Kunst, Kunstgewerbe, Archäologie und Naturgeschichte in der walisischen Hauptstadt Cardiff. Es ist Teil des dezentralen National Museum Wales, zu dem sechs weitere Museen an verschiedenen Standorten gehören. Inhaltsverzeichnis 1 Geschichte 2 Sammlungen 2.1 Kunst und Kunstgewerbe 3 Ausgestellte Werke 4 Weblinks Geschichte Bei Gründung im Jahr 1907 gab es eine 25-jährige Sammlung…
Ehemaliger Kanton Marseille-Les Trois Lucs Region Provence-Alpes-Côte d’Azur Département Bouches-du-Rhône Arrondissement Marseille Auflösungsdatum 29. März 2015 Einwohner 30.968 (1. Jan. 2012) Bevölkerungsdichte 1.623 Einw./km² Fläche 19.08 km² Gemeinden 1 INSEE-Code 1356 Lage des Kantons Marseille-Les Trois Lucs im Département Bouches-du-Rhône Der Kanton Marseille-Les Trois Lucs war bis 2015 ein französischer Wahlkreis im Arrondissement Marseille, im Départeme…
Film Titel Der Spion von nebenan Originaltitel My Spy Produktionsland Vereinigte Staaten Originalsprache Englisch Erscheinungsjahr 2020 Länge 102 Minuten Altersfreigabe FSK 12[1] JMK 12[2] Stab Regie Peter Segal Drehbuch Erich Hoeber,Jon Hoeber Produktion Peter Segal,Robert Simonds,Dave Bautista,Chris Bender,Jonathan Meisner,Gigi Pritzker,Jake Weiner Musik Dominic Lewis Kamera Larry Blanford Schnitt Jason Gourson Besetzung Dave Bautista: JJ Chloe Coleman: Sophie Vale Kriste…
Evelyn Mawuli馬瓜 エブリンMawuli pada 2019No. 0 – Toyota AntelopesPosisiSmall forwardLigaLiga Basket Jepang PutriInformasi pribadiLahir2 Juni 1995 (umur 28)Toyohashi, Aichi, JepangKebangsaanJepangTinggi5 ft 11 in (1,80 m)Berat174 pon (79 kg)Informasi karierDraf WNBA2017 / Tidak didrafKarier bermain2014–sekarangRiwayat karier2014–2017Aisin AW Wings2017–kiniToyota Antelopes Medali Basket putri Mewakili Jepang Permainan Olimpiade 2020 Tokyo …
Museum of British Jewish life Jewish Museum LondonExterior of the Jewish Museum at Raymond Burton HouseLocation within London Borough of CamdenLocationRaymond Burton House129–131 Albert StreetLondon, NW1United KingdomCoordinates51°32′13″N 0°08′40″W / 51.536944°N 0.144444°W / 51.536944; -0.144444DirectorSue Shave (acting)Public transit access Camden TownWebsiteJewish Museum London Listed Building – Grade IIOfficial nameNumbers 123–139 and attached railing…
Portuguese painter (1768–1837) Domingos SequeiraSelf-Portrait by Domingos SequeiraBornDomingos António de Sequeira(1768-03-10)10 March 1768Lisbon, Kingdom of PortugalDied8 March 1837(1837-03-08) (aged 68)Rome, Papal StatesNationalityPortugueseKnown forFine PaintingMovementNeoclassicism Domingos António de Sequeira (Lisbon; 10 March 1768 – Rome; 8 March 1837) was a famous Portuguese painter at the Royal Court of King John VI of Portugal. Biography He was born in Belé…
Canadian ice hockey player For the French politician, see André Savard (politician). Ice hockey player André Savard Savard in 1980Born (1953-02-09) February 9, 1953 (age 70)Témiscaming, Quebec, CanadaHeight 6 ft 1 in (185 cm)Weight 185 lb (84 kg; 13 st 3 lb)Position CentreShot LeftPlayed for Boston BruinsBuffalo SabresQuebec NordiquesNHL Draft 6th overall, 1973Boston BruinsWHA Draft 3rd overall, 1973Quebec NordiquesPlaying career 1973–1985 Joseph …
Pour les articles homonymes, voir traité de Paris. Traité de Paris (1947) Représentants du Canada à la conférence du traité de Paris au palais du Luxembourg. De gauche à droite : Norman Robertson, William Lyon Mackenzie King, Brooke Claxton, Arnold Heeney. Données clés Données clés Signé 10 février 1947Paris Parties Signataires Royaume-Uni Union soviétique États-Unis France Italie Roumanie Hongrie Bulgarie Finlande modifier Le traité de Paris signé le 10 févrie…
Military airfield near Aviano, Friuli-Venezia Giulia, Italy This article includes a list of general references, but it lacks sufficient corresponding inline citations. Please help to improve this article by introducing more precise citations. (February 2008) (Learn how and when to remove this template message) Aviano Air BaseAeroporto Pagliano e Gori di AvianoNear Aviano, Friuli Venezia Giulia in ItalyA US Air Force F-16 Fighting Falcon of the 31st Fighter Wing based at Aviano AvianoShow ma…
Protein-coding gene in humans For the film which uses ID4 as a marketing initialism, see Independence Day (1996 film). For the battery electric car, see Volkswagen ID.4. ID4IdentifiersAliasesID4, IDB4, bHLHb27, inhibitor of DNA binding 4, HLH proteinExternal IDsOMIM: 600581 MGI: 99414 HomoloGene: 1186 GeneCards: ID4 Gene location (Human)Chr.Chromosome 6 (human)[1]Band6p22.3Start19,837,370 bp[1]End19,842,197 bp[1]Gene location (Mouse)Chr.Chromosome 13 (mouse)[2]Ban…
2022 uncrewed Moon-orbiting NASA mission EM-1 redirects here. For other uses, see EM1 (disambiguation). Artemis 1The Space Launch System launches from Kennedy Space Center's LC-39BNames Artemis I (official) Exploration Mission-1 (EM-1) (formerly) Mission typeUncrewed lunar orbital test flightOperatorNASACOSPAR ID2022-156ASATCAT no.54257Websitewww.nasa.gov/artemis-1Mission duration25 days, 10 hours, 55 minutes, 50 seconds (unofficial)[1][2]25 days, 10 hours and 53 m…
1992 video game This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed.Find sources: Great Greed – news · newspapers · books · scholar · JSTOR (June 2021) (Learn how and when to remove this template message) 1992 video gameGreat GreedNorth American cover artDeveloper(s)NamcoPublisher(s)NamcoPlatform(s)Game BoyReleaseJP: September 1…
Politics of Mauritius Constitution Presidency President Prithvirajsing Roopun Vice-President Eddy Boissezon Government Prime Minister Pravind Jugnauth Deputy Prime Minister Steven Obeegadoo Cabinet Legislature National Assembly Speaker: Sooroojdev Phokeer Leader of the Opposition Xavier-Luc Duval Judiciary Supreme Court Chief Justice : Rehana Mungly-Gulbul Elections Political parties Recent elections Presidential: 2008 General: 20192024 Administrative divisions Constituencies Districts Oute…
Majestic DramaBackground informationBorn (1990-10-15) October 15, 1990 (age 33)Dakar, SenegalOriginAlbany, New YorkGenresPop, hip hop, R&BOccupation(s)Record producersongwriterInstrument(s)Keyboard, synthesizer, drumsYears active2010-presentWebsitemajesticdrama.comMusical artist Abdoulaye Diop (born October 15, 1990), known professionally as Majestic Drama, is a music producer and songwriter who lets his African origins influence his diverse sound and set himself apart from the crowd. A…
Association football club in South Africa This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed.Find sources: Mamelodi Sundowns F.C. – news · newspapers · books · scholar · JSTOR (October 2016) (Learn how and when to remove this template message) Football clubMamelodi SundownsFull nameMamelodi Sundowns Football ClubNickname(s) Baf…
Character in James Bond film Golden Eye In this name that follows Eastern Slavic naming conventions, the patronymic is Zaragevna and the family name is Onatopp. Fictional character Xenia OnatoppJames Bond characterFamke Janssen as Xenia OnatoppFirst appearanceGoldenEye (1995)Portrayed byFamke Janssen (1995)Voiced byJenya Lano (GoldenEye: Rogue Agent)Kate Magowan (GoldenEye 007)In-universe informationGenderFemaleAffiliationex-Soviet Air ForceJanusClassificationBond girl / Henchwoman Xenia Zar…
Support of a political identity associated with the modern nation-state of the Philippines The Aguinaldo Shrine built in 1845 is where Philippine independence from Spain was declared on June 12, 1898. Filipino nationalism refers to the establishment and support of a political identity associated with the modern nation-state of the Philippines, leading to a wide-ranging campaign for political, social, and economic freedom in the Philippines. This gradually emerged from various political and armed…
Equity agendas Not to be confused with Womanism. Feminist and Feminists redirect here. For other uses, see Feminist (disambiguation). It has been suggested that this article be merged with Feminist movement and Feminist movements and ideologies. (Discuss) Proposed since September 2023. Part of a series onFeminism History Feminist history History of feminism Women's history American British Canadian German Waves First Second Third Fourth Timelines Women's suffrage Muslim countries US Other women'…
Lokasi Pengunjung: 3.145.115.71