UBV system

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UBV system [¦yü‚bē¦vē ‚sis·təm]

(astronomy)

A system of stellar magnitudes in which an object's apparent magnitude is measured at three wavelengths, labeledU, at 360 nanometers;B, at 420 nanometers; andV, at 540 nanometers; and is characterized by the color indicesB-VandU-B, which are both defined to be 0 for a star of spectral type A0. Also known as Johnson-Morgan system.

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No references found			Photometry measured on the Johnson UBV system on the nights of 12, 25 and 26 July 1978 with the 0. From the impossible to the possible: Magda Streicher--Presidential ... by Monthly Notes of the Astronomical Society of Southern Africa			Uberlandia Uberlândia Ubico, Jorge Ubiivovk, Elena Ubiivovk, Elena Konstantinovna Ubinskoe Ubiquinone Ubiquist ubiquitin ubiquitous ubiquitous computing Ubiquity UBL Übler effect UBM Uborevich, Ieronim Uborevich, Ieronim Petrovich Ubort UBR Ubsa Ubsu-Nur Ubsu-Nur Basin Ubu Roi Ubuntu UBV photometry UBV system UBVRI system Ubykh Ubykhi uC uC++ UCAID UCAS Ucayali Ucayali River UCB UCCA Uccello Uccello, Paolo Uccialli, Treaty of UCE Uch-Adzhi Ucha Dzhaparidze Ucha Malakievich Dzhaparidze Uchaly Uchami Uchet I Finansy V Kolkhozakh I Sovkhozakh Uchitel Uchitel, Efim Uchitel, Efim Iulevich UchitelSkaia Gazeta			UBTR UBTS UBTT Ubu Ubu Rex Ubu Roi Ubu Roi ou les Polonais UBUC Ubud Writers and Readers Festival Ubuntu Ubuntu Ubuntu (Linux distribution) Ubuntu (Linux distribution) Ubuntu (Linux distribution) Ubuntu Customization Kit Ubuntu Developer Summit Ubuntu Document Storage Facility Ubuntu Easy Business Server Ubuntu Education Fund Ubuntu Netbook Edition Ubuntu Netbook Remix Ubuntu System Panel Ubuntu Volunteer Management Agency UBUS UBV UBV photometric system UBV photometry UBV photometry UBV system UBVGMB UBVRI UBVRI system UBW UBWBV UBWC UBWH UBWPAD Ubx UBXT UBY Ubykh Ubykh Ubykhi UBZ uc uc uc UC GSB UC IPM UC MBEST UC MEXUS UC Monterey Bay Education, Science & Technology Center UC MRCG UC Personnel Assignment Program UC&R uC++

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