The Serayu River is a river in Central Java , Indonesia , about 300 km southeast of the capital Jakarta .
17-487: The river spanned from northeast to southwest with a length of around 181 km , and crossing five kabupaten (regency) in Central Java; they are Wonosobo Regency , Banjarnegara Regency , Purbalingga Regency , Banyumas Regency , draining to Indian Ocean with estuarine located at Cilacap Regency . The river flows in the southern central area of Java with a predominantly tropical monsoon climate (designated as Am in
34-603: A circuit around the nearer ecliptic pole every 25,800 years. As of 1 January 2000 , the positions of the ecliptic poles expressed in equatorial coordinates , as a consequence of Earth's axial tilt , are the following: The North Ecliptic Pole is located near the Cat's Eye Nebula and the South Ecliptic Pole is located near the Large Magellanic Cloud . It is impossible anywhere on Earth for either ecliptic pole to be at
51-609: A pattern in English whereby SI units are pronounced with the stress on the first syllable (as in kilogram , kilojoule and kilohertz ) and the pronunciation of the actual base unit does not change irrespective of the prefix (as in centimetre , millimetre , nanometre and so on). It is generally preferred by the British Broadcasting Corporation (BBC), the Canadian Broadcasting Corporation (CBC), and
68-428: A revolving body is defined by the right-hand rule . If the fingers of the right hand are curved along the direction of orbital motion , with the thumb extended and oriented to be parallel to the orbital axis , then the direction the thumb points is defined to be the orbital north. The poles of Earth's orbit are referred to as the ecliptic poles . For the remaining planets, the orbital pole in ecliptic coordinates
85-626: A snapshot of the use of the kilometre across Europe: the kilometre was in use in the Netherlands and in Italy, and the myriametre was in use in France. In 1935, the International Committee for Weights and Measures (CIPM) officially abolished the prefix "myria-" and with it the "myriametre", leaving the kilometre as the recognised unit of length for measurements of that magnitude. The symbol km for
102-659: Is a hydroelectric power dam installed in the Serayu River. Water rafting is one of the tourist attractions in the villages of Tunggara and Prigi, in Banjarnegara Regency . 7°41′17″S 109°06′02″E / 7.68806°S 109.10056°E / -7.68806; 109.10056 Kilometer The kilometre ( SI symbol: km ; / ˈ k ɪ l ə m iː t ər / or / k ɪ ˈ l ɒ m ə t ər / ), spelt kilometer in American and Philippine English ,
119-661: Is a unit of length in the International System of Units (SI), equal to one thousand metres ( kilo- being the SI prefix for 1000 ). It is the preferred measurement unit to express distances between geographical places on land in most of the world; notable exceptions are the United States and the United Kingdom where the statute mile is used. There are two common pronunciations for the word. The first pronunciation follows
136-432: Is either point at the ends of the orbital normal , an imaginary line segment that runs through a focus of an orbit (of a revolving body like a planet , moon or satellite ) and is perpendicular (or normal ) to the orbital plane . Projected onto the celestial sphere , orbital poles are similar in concept to celestial poles , but are based on the body's orbit instead of its equator . The north orbital pole of
153-539: Is even more obvious in countries that use the American spelling of the word metre . This pronunciation is irregular because it makes the kilometre the only SI unit with the stress on the second syllable. After Australia introduced the metric system in 1970, the first pronunciation was declared official by the government's Metric Conversion Board. However, the Australian prime minister at the time, Gough Whitlam , insisted that
170-486: Is given by the longitude of the ascending node ( ☊ ) and inclination ( i ): ℓ = ☊ − 90° , b = 90° − i . In the following table, the planetary orbit poles are given in both celestial coordinates and the ecliptic coordinates for the Earth. When an artificial satellite orbits close to another large body, it can only maintain continuous observations in areas near its orbital poles. The continuous viewing zone (CVZ) of
187-572: The Hubble Space Telescope lies inside roughly 24° of Hubble's orbital poles, which precess around the Earth's axis every 56 days. The ecliptic is the plane on which Earth orbits the Sun . The ecliptic poles are the two points where the ecliptic axis, the imaginary line perpendicular to the ecliptic, intersects the celestial sphere . The two ecliptic poles are mapped below. Due to axial precession , either celestial pole completes
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#1732852733126204-481: The Australian Broadcasting Corporation (ABC). Many other users, particularly in countries where SI (the metric system) is not widely used, use the second pronunciation with stress on the second syllable. The second pronunciation follows the stress pattern used for the names of measuring instruments (such as micrometer , barometer , thermometer , tachometer, and speedometer ). The contrast
221-466: The Köppen-Geiger climate classification). The annual average temperature in the area is 24 °C. The warmest month is March, when the average temperature is around 25 °C, and the coldest is August, at 23 °C. The average annual rainfall is 3897 mm. The wettest month is January, with an average of 561 mm of rainfall, and the driest is September, with 34 mm of rainfall. Mrica Dam
238-535: The distance from the orbital poles (either North or South) to the Equator , this being a truly internationally based unit. The first name of the kilometre was "Millaire". Although the metre was formally defined in 1799, the myriametre ( 10 000 metres) was preferred to the "kilometre" for everyday use. The term " myriamètre " appeared a number of times in the text of Develey's book Physique d'Emile: ou, Principes de la science de la nature , (published in 1802), while
255-565: The kilometre is in lower case and has been standardised by the BIPM . A slang term for the kilometre in the US, UK, and Canadian militaries is klick . Some sporting disciplines feature 1000 m (one-kilometre) races in major events (such as the Olympic Games ). In some disciplines—although world records are catalogued—one-kilometre events remain a minority. Orbital pole An orbital pole
272-756: The second pronunciation was the correct one because of the Greek origins of the two parts of the word. By a decree of 8 May 1790, the French National Constituent Assembly ordered the French Academy of Sciences to develop a new measurement system. In August 1793, the French National Convention decreed the metre as the sole length measurement system in the French Republic and it was based on 1 / 10 millionth of
289-499: The term kilometre only appeared in an appendix. French maps published in 1835 had scales showing myriametres and " lieues de Poste " (Postal leagues of about 4288 metres). The Dutch, on the other hand, adopted the kilometre in 1817 but gave it the local name of the mijl . It was only in 1867 that the term " kilometer " became the only official unit of measure in the Netherlands to represent 1000 metres. Two German textbooks dated 1842 and 1848 respectively give
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