The perigee is the point in a satellite's elliptical path around the earth at which it is closest to the center of the earth. Can you spell these 10 commonly misspelled words? All dates and times are Universal time (UTC); to convert to local time add or subtract the difference between your time zone and UTC, remembering to include any additional offset due to summer time for dates when it is in effect. periapsis, point of periapsis - (astronomy) the point in an orbit closest to the body being orbited. perigee: 1 n periapsis in Earth orbit; the point in its orbit where a satellite is nearest to the Earth Antonyms: apogee apoapsis in Earth orbit; the point in its orbit where a satellite is at the greatest distance from the Earth Type of: periapsis , point of periapsis (astronomy) the point in … : The Moon, with regard to the Earth, is similarly in her perigee, and her apogee. During full or new moons — which occur when the Earth, sun, and moon are nearly in alignment — average tidal ranges are slightly larger. the point in the orbit (= curved path) of the moon or a satellite when it it is closest to the earth : The moon will be at perigee, its closest to the earth, on the 8th of the month. (pe -ră-jee) The point in the orbit of the Moon or an artificial Earth satellite that is nearest the Earth and at which the body's velocity is maximal. In Depth The term “supermoon” was coined in 1979 and is often used today to describe what astronomers would call a perigean ( pear-ih-jee-un ) full moon: a full moon occurring near or at the time when the Moon is at its closest point in its orbit around Earth. Although its proximity means that the signal path is short, the fact that the satellite is rapidly moving means that it is accessible for only a brief time. perigee (plural perigees) 1. Strictly, the distance to the perigee is taken from the Earth's center. Delivered to your inbox! These example sentences are selected automatically from various online news sources to reflect current usage of the word 'perigee.' The Apogee is located at the farthest distance from the focus of orbit, whereas the perigee is located at the closest distance “from the same focus”. This occurs twice each lunar month (about 29.5 days on average). For example, the apsides of Earth's orbit of the Sun are two: the apsis for Earth's farthest point from the Sun, dubbed the aphelion; and the apsis for Earth's nearest point, the perihelion.. In satellite communications, most satellites orbit the earth in elliptical patterns with the earth not in the exact center of the orbital pattern. The moon appears full when the Earth is between the moon and the sun. E Noun. The Common Vulnerability Scoring System (CVSS) is a public framework for rating the severity of security vulnerabilities in software. 'Nip it in the butt' or 'Nip it in the bud'. Learn a new word every day. 2.37. We were founded in 2018 and have begun to develop strategic priorities and make investments. Who We Are Perigee Fund is a national philanthropic endeavor committed to advancing work in the field of infant and early childhood mental health and maternal mental health. : Speaking of the moon, she is nearest to the earth in her perigee, and farthest from it in her apogee. Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free! The distance to the Moon's perigee varies; on average it is about 363 300 km. 1. perigee - periapsis in Earth orbit; the point in its orbit where a satellite is nearest to the Earth. Perigee relates to the orbit of the moon. Perigee, in terms of an orbiting satellite like the Moon, is when the satellite is closest to the planet it orbits, and for the Moon, its perigee distance is 216,500 miles and its apogee distance, the furthest it is from the Earth, is 247,700 miles.....an orbit that is an ellipse. ‘Its low perigee meant that the orbit would degrade rapidly due to atmospheric friction.’ Origin Late 16th century from French périgée, via modern Latin from Greek perigeion ‘close round the earth’, from peri- ‘around’ + gē ‘earth’. When a satellite is at its furthest point from the earth, it … The Payment Card Industry Data Security Standard (PCI DSS) is a widely accepted set of policies and procedures intended to ... Risk management is the process of identifying, assessing and controlling threats to an organization's capital and earnings. Privacy Policy Cookie Preferences What made you want to look up perigee? For example, perigee is defined as the moment when the moon is orbiting "closest" to the Earth. Definition of perigee noun in Oxford Advanced Learner's Dictionary. Protected health information (PHI), also referred to as personal health information, generally refers to demographic information,... HIPAA (Health Insurance Portability and Accountability Act) is United States legislation that provides data privacy and security ... Telemedicine is the remote delivery of healthcare services, such as health assessments or consultations, over the ... Risk mitigation is a strategy to prepare for and lessen the effects of threats faced by a business. All Rights Reserved, Accessed 21 Dec. 2020. Most people chose this as the best definition of perigee: The point in an orbit aro... See the dictionary meaning, pronunciation, and sentence examples. One of the principal advantages of a geostationary satellite is the fact that it follows a circular orbit, so the orbital speed is constant. (Perigee can be measured between the satellite and the earth's surface, although this is a less precise specification because the earth is not a perfect sphere. Send us feedback. The plural term, "apsides," usually implies both apsis points; apsides can also refer to the distance of the extreme range of an object orbiting a host body. Pre-release due to Diwali . The difference is approximately 4,000 miles or 6,400 kilometers.). The point of lowest altitude is called perigee. Please tell us where you read or heard it (including the quote, if possible). Test Your Knowledge - and learn some interesting things along the way. Compare apogee. When a satellite is at its closest point to the earth, it is at the perigee of the orbit. In addition, if a directional antenna is used at a ground-based station, it is difficult to track the satellite because the position of the antenna(azimuth and elevation) must be constantly and rapidly adjusted. Called also epigee epigeum. Orbits are elliptical, rather than circular, which explains why satellites can be at varying distances in relation to Earth as they orbit. When a satellite is at its closest … perigee. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more. In satellite communications, most satellites orbit the earth in elliptical patterns with the earth not in the exact center of the orbital pattern. Perigee is an antonym of apogee. Perigee definition: the point in its orbit around the earth when the moon or an artificial satellite is... | Meaning, pronunciation, translations and examples There are two apsides in any elliptic orbit. See the full definition for perigee in the English Language Learners Dictionary, Britannica.com: Encyclopedia article about perigee. When a full moon appears at perigee it is slightly brighter and larger than a regular full moon—and that's where we get a "supermoon. We are driven by the fact that the most influential period of brain development […] It is probable that full moon on November 4 and December 3 (with perigee), new moon on November 18 and December 18 and lunar perigee on November 6 will … Perigee is the point at which the Moon is closest in its orbit to the Earth, and syzygy is when the Earth, the Moon and the Sun are aligned, which happens at every full or new moon. Middle French, from New Latin perigeum, from Greek perigeion, from neuter of perigeios near the earth, from peri- + gē earth. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Perigee definition is - the point in the orbit of an object (such as a satellite) orbiting the earth that is nearest to the center of the earth; also : the point nearest a planet or a satellite (such as the moon) reached by an object orbiting it. He's making a quiz, and checking it twice... Test your knowledge of the words of the year. WhatIs.com Search Thousands of Tech Definitions (astronomy) The point, in an orbit about the Earth, that is closest to the Earth: the periapsis of an Earth orbiter.quotations ▼ 1.1. Information and translations of perigee in the most comprehensive … Apogee and Perigee are two points on an orbit. Meaning of perigee. In both cases, the gravitational pull of the sun is ‘added’ to the gravitational pull of the moo… 'All Intensive Purposes' or 'All Intents and Purposes'? n Perigee (Astron) That point, in the orbit of the moon or other body orbiting the earth, which is nearest to the earth; -- opposed to apogee.It is sometimes, but rarely, used of the nearest points of bodies not orbiting the earth, such as of a comet, a planet, etc. It now has a perigee slightly below 110 miles and an apogee of about 400 miles. By - Webopedia Staff. Find more opposite words at wordhippo.com! About Perigee. It is the closest point that a satellite (or the Moon) gets to Earth during its orbit. In addition, the satellite's synchronization with the earth's orbit means that the antenna of an earth-based station can be pointed at a fixed spot in the sky, and no further adjustment of antenna orientation is needed. : The lowest index, fitted with a single pointer, indicates the motion of the moon from its apogee or perigee. … In communications, perigee is the least desirable time to access a satellite. The term also applies to the minimum distance in kilometers or miles between the satellite and the center of the earth. When a satellite follows a non-circular orbit around the earth, the satellite's path is an ellipse with the center of the earth at one focus. The perigee of the Moon is when it's at its closest point to the Earth. What does perigee mean? As the moon wheels around Earth every 28 days and shows us a progressively greate… It’s a feature of a regular, recurring and stable path… a sustainable model, and the perfect name for our company. 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