Half-month

The half-month is a calendar subdivision used in astronomy. Each calendar month is separated into two parts:

  • days 1 to 15
  • day 16 until the end of the month.

Newly identified small Solar System bodies, such as comets and asteroids, are given systematic designations that contain the half-month encoded as a letter of the English alphabet.[1][2] For example, an object discovered in the second half of January would be identified with the letter B; if found in the first half of February, the letter would be C. The letter I is not used, to prevent confusion with the number 1. Instead, the letters proceed directly from H (April 16–30) to J (May 1–15). The letter appears in the provisional designation, then when the object is confirmed the letter is incorporated into the comet designation (for comets) or minor planet designation (for asteroids and other minor planets).

Half-month letters[1]
Letter Dates
A January 1–15
B January 16–31
C February 1–15
D February 16–29
E March 1–15
F March 16–31
G April 1–15
H April 16–30
Letter Dates
J May 1–15
K May 16–31
L June 1–15
M June 16–30
N July 1–15
O July 16–31
P August 1–15
Q August 16–31
Letter Dates
R September 1–15
S September 16–30
T October 1–15
U October 16–31
V November 1–15
W November 16–30
X December 1–15
Y December 16–31

See also

References

  1. ^ a b "New- And Old-Style Minor Planet Designations". Minor Planet Center. Retrieved 17 December 2018.
  2. ^ "Naming of Astronomical Objects". International Astronomical Union. Retrieved 17 December 2018.
Stub icon

This time-related article is a stub. You can help Wikipedia by expanding it.

Read other articles:

Şəhriyar, Sharur

Municipality in Nakhchivan, AzerbaijanShahriyarMunicipalityAzerbaijani: ŞəhriyarShahriyarCoordinates: 39°32′53″N 44°56′58″E / 39.54806°N 44.94944°E / 39.54806; 44.94944Country AzerbaijanAutonomous republicNakhchivanDistrictSharurPopulation (2008)[1] • Total2,348Time zoneUTC+4 (AZT) Şəhriyar (also, Shahriyar and Shahriar) is a village and municipality in the Sharur District of Nakhchivan, Azerbaijan. It is located 3 km ...

 

العلاقات الأندورية القيرغيزستانية

العلاقات الأندورية القيرغيزستانية أندورا قيرغيزستان   أندورا   قيرغيزستان تعديل مصدري - تعديل   العلاقات الأندورية القيرغيزستانية هي العلاقات الثنائية التي تجمع بين أندورا وقيرغيزستان.[1][2][3][4][5] مقارنة بين البلدين هذه مقارنة عامة ومرجعي...

 

بيلروس (نيويورك)

بيلروس     الإحداثيات 40°43′24″N 73°42′59″W / 40.7233°N 73.7164°W / 40.7233; -73.7164   [1] تقسيم إداري  البلد الولايات المتحدة[2]  التقسيم الأعلى مقاطعة ناسو  خصائص جغرافية  المساحة 0.322232 كيلومتر مربع0.324379 كيلومتر مربع (1 أبريل 2010)  ارتفاع 26 متر  عدد السكا�...

Leu romeno

Questa voce o sezione sugli argomenti valute e Romania non cita le fonti necessarie o quelle presenti sono insufficienti. Puoi migliorare questa voce aggiungendo citazioni da fonti attendibili secondo le linee guida sull'uso delle fonti. Leu romenoNome locale(RO) Leu românesc Banconota da 50 lei (fronte) Banconota da 50 lei (retro) Codice ISO 4217RON Stati Romania[1] SimboloL Frazioni100 bani (B) Monete1, 5, 10, 50 bani Banconote1, 5, 10, 20, 50, 100, 200, 500 lei Entità ...

 

العلاقات الجورجية المصرية

العلاقات الجورجية المصرية جورجيا مصر   جورجيا   مصر تعديل مصدري - تعديل   العلاقات الجورجية المصرية هي العلاقات الثنائية التي تجمع بين جورجيا ومصر.[1][2][3][4][5] مقارنة بين البلدين هذه مقارنة عامة ومرجعية للدولتين: وجه المقارنة جورجيا مصر المس�...

 

Engineering Undergraduate Society of the University of British Columbia

Engineering Undergraduate Society (EUS), is the engineering society at the University of British Columbia. It organizes Engineering department events but is perhaps best known for practical jokes (STUdeNT projectS) it has played in the past, including hanging the frame of a Volkswagen Beetle off bridges. The members of the EUS are known for their pride of being engineering students and conspicuous displays thereof. EUS members often incorrectly refer to themselves as Engineers even though the...

Paul Flory

Paul John Flory (1973) Paul John Flory memenangkan Hadiah Nobel Kimia pada 1974 karena keberhasilan penting dari segi teori dan juga pengkajian dalam bidang kimia fisik dari molekul makro. Flory berhasil menjelaskan secara tepat dan jelas mengenai sifat polimer. Ia dilahirkan pada 19 Juni 1920 di Sterling, Illinois, Amerika Serikat. Pranala luar Biografi di nobel.se http://www.tutor.com.my/tutor/estidotmy/index.asp?y=2003&dt=0625&pub=ESTIDOTMY&sec=Dunia_Saintis&pg=ds_01.htm lb...

 

Salim Khan

Salim KhanKhan pada Agustus 2011LahirSalim Abdul Rashid Khan24 November 1935 (umur 88)Indore, Negara Bagian Indore, India Britania (Sekarang Madhya Pradesh, India)Tempat tinggalMumbai, IndiaKebangsaanIndiaPekerjaanAkor, Penulis naskahTahun aktif1959–1996, 2013–sekarangSuami/istriSushila Charak (aka Salma Khan) (m. 1964) Helen (m. 1981)AnakSalman, Arbaaz, Sohail, Alvira dan Arpita Salim Abdul Rashid Khan (kelahiran 24 November 1935) adalah seorang pemeran, produser dan penulis n...

 

Ek Musafir Ek Hasina

1962 Indian filmEk Musafir Ek HasinaaDVD coverDirected byRaj KhoslaWritten byRaj KhoslaProduced bySashadhar MukherjeeStarringJoy MukherjeeSadhanaCinematographyFali MistryEdited byS. E. ChandiwaleMusic byO. P. NayyarRaja  Mehdi Ali Khan (lyrics)Release date1962CountryIndiaLanguageHindiBox office₹2,50,00,000[1] Ek Musafir Ek Hasina (English: A Traveller and A Beauty) is a 1962 Bollywood film directed by Raj Khosla and starring Joy Mukherjee, Sadhana in lead roles. The film was p...

Cellular evolutionary algorithm

Kind of evolutionary algorithm A cellular evolutionary algorithm (cEA) is a kind of evolutionary algorithm (EA) in which individuals cannot mate arbitrarily, but every one interacts with its closer neighbors on which a basic EA is applied (selection, variation, replacement). Example evolution of a cEA depending on the shape of the population, from squared (left) to unidimensional ring (right). Darker colors mean better solutions. Observe how shapes different from the traditional square keep d...

 

USTA Billie Jean King National Tennis Center

Lo USTA Billie Jean King National Tennis Center è un impianto tennistico situato a New York, Stati Uniti, nel quartiere del Queens, teatro nei mesi di agosto e settembre degli US Open, uno dei quattro tornei del Grande Slam. Gestito dalla United States Tennis Association (USTA) a partire dal 1978, questo complesso presenta 22 campi da tennis all'interno dei suoi 46,5 acri e altri 11 nel parco adiacente. Il campo principale è l'Arthur Ashe Stadium che, con un massimo di 23.771 posti a sedere...

 

1872 en Belgique

Cet article est une ébauche concernant une chronologie ou une date et la Belgique. Vous pouvez partager vos connaissances en l’améliorant (comment ?) selon les recommandations des projets correspondants. Chronologie de la Belgique ◄◄ 1868 1869 1870 1871 1872 1873 1874 1875 1876 ►► Chronologies Données clés 1867 1868 1869  1870  1871 1872 1873Décennies :1840 1850 1860  1870  1880 1890 1900Siècles :XVIIe XVIIIe  XIXe  XXe XXIeMillén...

Anthony Reyes

American baseball player (born 1981) Baseball player Anthony ReyesReyes with the St. Louis CardinalsPitcherBorn: (1981-10-16) October 16, 1981 (age 42)Whittier, California, U.S.Batted: RightThrew: RightMLB debutAugust 9, 2005, for the St. Louis CardinalsLast MLB appearanceMay 22, 2009, for the Cleveland IndiansMLB statisticsWin–loss record13–26Earned run average5.12Strikeouts205 Teams St. Louis Cardinals (2005–2008) Cleveland Indians (2008–2009) Care...

 

Новотитаровское сельское поселение

Сельское поселение России (МО 2-го уровня)Новотитаровское сельское поселение Флаг[d] Герб 45°14′09″ с. ш. 38°58′16″ в. д.HGЯO Страна  Россия Субъект РФ Краснодарский край Район Динской Включает 4 населённых пункта Адм. центр Новотитаровская Глава сельского пос�...

 

7 July Memorial

Memorial in Hyde Park, London 7 July Memorial in 2015 The 7 July Memorial is a permanent memorial to the 52 victims of the 7 July 2005 London bombings. It is located on the east side of Hyde Park, between Lover's Walk and Park Lane, close to Curzon Gate and about 150 metres (490 ft) north of the monumental statue of Achilles.[1] Design The monument is made of 52 stainless steel columns (or stelae), each 3.5 metres (11 ft) tall and weighing about 850 kilograms (1,870 lb)...

Penmere railway station

Railway station in Cornwall, England PenmerePennmeurGeneral informationLocationFalmouth, CornwallEnglandCoordinates50°09′04″N 5°04′59″W / 50.151°N 5.083°W / 50.151; -5.083Grid referenceSW798323Managed byGreat Western RailwayPlatforms1Other informationStation codePNMClassificationDfT category F1HistoryOriginal companyGreat Western RailwayKey datesOpened1925Passengers2018/19 0.191 million2019/20 0.199 million2020/21 77,1442021/22 0.185 million2022/23 0.178 mi...

 

One Hundred and One Dalmatians

1961 animated film by Walt Disney This article is about the 1961 animated film. For other uses, see 101 Dalmatians. One Hundred and One DalmatiansTheatrical release posterDirected by Wolfgang Reitherman Hamilton Luske Clyde Geronimi Screenplay byBill Peet (uncredited)[1]Story byBill PeetBased onThe Hundred and One Dalmatiansby Dodie SmithProduced byWalt DisneyStarring Rod Taylor J. Pat O'Malley Betty Lou Gerson Martha Wentworth Ben Wright Cate Bauer Dave Frankham Fred Worlock Edited b...

 

Red box (government)

Despatch box for UK government documents A pair of despatch boxes Red boxes, or sometimes ministerial boxes, are a type of despatch box[1] produced by Barrow Hepburn & Gale or Wickwar & Co and are used by ministers in the British government and the British monarch to carry government documents. Similar in appearance to a briefcase, they are primarily used to hold and transport official ministerial papers. Red boxes are one modern form of despatch boxes, which have been in gove...

Marta y María (Caravaggio)

Marta y María Magdalena(Marta e Maddalena) Año 1598Autor CaravaggioTécnica Pintura al óleoEstilo BarrocoTamaño 97,8 cm × 132,7 cmLocalización Detroit Institute of Arts, Detroit, Estados Unidos de América[editar datos en Wikidata] Marta y María es una pintura realizada por Caravaggio en 1598, que se conserva en Detroit. En este cuadro, Caravaggio sigue los alineamientos requeridos por la Iglesia católica contrarreformista para sus cuadros, al mostrar a los personajes santos...

 

بشري (تونس)

  لمعانٍ أخرى، طالع بشري (توضيح). 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. (ديسمبر 2018) ليس في هذه المقالة مقدمة. فضلًا، ساهم في تحسين المقالة من خلال كتابة...