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An aerodrome reference point [1] (ARP), in some countries airport reference point, [2] is the designated geographical location of an aerodrome. [3] The geographic coordinates of an ARP are part of an aerodrome's entry in the AIP .
The Address Resolution Protocol (ARP) is a communication protocol used for discovering the link layer address, such as a MAC address, associated with a given internet layer address, typically an IPv4 address. This mapping is a critical function in the Internet protocol suite. ARP was defined in 1982 by RFC 826, which is Internet Standard STD 37.
Ras al Hadd Airport (ICAO: OORH) is an airport in Ash Sharqiyah Region of Oman, about 30 km south of the town of Ras al Hadd. [2] Construction began in 2011, [3] and was completed December, 2018 but the airport remains unused.
NGC 523, also known as Arp 158, from the ARP catalog is a spiral galaxy located in the constellation Andromeda. [1] It was discovered separately by William Herschel on 13 September 1784, and by Heinrich d'Arrest on 13 August 1862. d'Arrest's discovery was listed as NGC 523, while Herschel's was listed as NGC 537; the two are one and the same. [4]
Cetus A, M77, NGC 1068, 3C 71, 4C-00.13, Arp 37, UGC 2188, PGC 10266 [7] Messier 77 ( M77 ), also known as NGC 1068 or the Squid Galaxy , is a barred spiral galaxy in the constellation Cetus . It is about 47 million light-years (14 Mpc ) away from Earth, and was discovered by Pierre Méchain in 1780, who originally described it as a nebula.
UGC 11597, PGC 65001, Arp 29, [1] Caldwell 12 NGC 6946 , sometimes referred to as the Fireworks Galaxy , is a face-on intermediate spiral galaxy with a small bright nucleus, whose location in the sky straddles the boundary between the northern constellations of Cepheus and Cygnus .
Health & Place ] (]]]]) ]]]–]]] Proximity to point sources of environmental mercury release as a predictor of autism prevalence Raymond F. Palmera,, Stephen Blanchardb, Robert Wooda
NGC 2608 (also known as Arp 12) is a barred spiral galaxy located 93 million light-years away in the constellation Cancer (the Crab). It is 62,000 light-years across, and about 60% of the width of the Milky Way .