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Joel Metcalf
Joel Hastings Metcalf (January 4, 1866 – February 23, 1925) was an American astronomer, humanitarian and minister. Reverend Metcalf graduated from Harvard Divinity School in 1892. He served as a Unitarian minister in Burlington, Vermont and in Taunton, Massachusetts, Winchester, Massachusetts and Portland, Maine. He discovered or co-discovered several comets, including 23P/Brorsen-Metcalf and 97P/Metcalf-Brewington, and also 41 asteroids during 1905–1914, as credited by the Minor Planet Center. Two of his discoveries, the main-belt asteroids 726 Joëlla and 792 Metcalfia 792 Metcalfia is a minor planet orbiting the Sun. It was discovered in 1907 by Joel Hastings Metcalf and was named after its discoverer. This is an X-type asteroid in the main belt The asteroid belt is a torus-shaped region in the Solar Syst ..., were named in his honor. Bibliography See also References External links Joel Hastings Metcalf – Minister, Humanitarian, A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Asteroid
An asteroid is a minor planet of the inner Solar System. Sizes and shapes of asteroids vary significantly, ranging from 1-meter rocks to a dwarf planet almost 1000 km in diameter; they are rocky, metallic or icy bodies with no atmosphere. Of the roughly one million known asteroids the greatest number are located between the orbits of Mars and Jupiter, approximately 2 to 4 AU from the Sun, in the main asteroid belt. Asteroids are generally classified to be of three types: C-type, M-type, and S-type. These were named after and are generally identified with carbonaceous, metallic, and silicaceous compositions, respectively. The size of asteroids varies greatly; the largest, Ceres, is almost across and qualifies as a dwarf planet. The total mass of all the asteroids combined is only 3% that of Earth's Moon. The majority of main belt asteroids follow slightly elliptical, stable orbits, revolving in the same direction as the Earth and taking from three to six years to comple ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
660 Crescentia
660 Crescentia is a minor planet orbiting the Sun that was discovered by American astronomer Joel Hastings Metcalf on January 8, 1908. The name may have been inspired by the asteroid's provisional designation ''1908 CC''. Peter Ting points out that the Rev. Joel Metcalf of Taunton (Massachusetts) discovered six asteroids with unexplained names, though listed in Lutz Schmadel's book. Ting used an on-line planetarium website to help with the location of some of the planets, playing back to the night of discovery. He noticed that there was a crescent moon (33%) low in the western sky and wonders if the Rev. Metcalf could have named the asteroid for the Moon. Crescentia would be a very unusual name for a person but not for a phase of the Moon. Crescentia is a member of the dynamic Maria family of asteroids that most likely formed as the result of a collisional breakup of a parent body. References External links Lightcurve plot of 660 Crescentia Palmer Divide Observatory, '' B ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
737 Arequipa
737 Arequipa is a minor planet orbiting the Sun. It was named after the Peruvian city of Arequipa, where Harvard's Boyden Observatory was located prior to 1927. See also * List of minor planets/701–800 * Meanings of minor planet names: 501–1000 References External links * * Background asteroids Arequipa Arequipa Arequipa (; Aymara and qu, Ariqipa) is a city and capital of province and the eponymous department of Peru. It is the seat of the Constitutional Court of Peru and often dubbed the "legal capital of Peru". It is the second most populated city ... S-type asteroids (Tholen) S-type asteroids (SMASS) 19121207 {{beltasteroid-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
736 Harvard
736 Harvard ('' prov. designation:'' ''or'' ) is a stony background asteroid from the inner regions of the asteroid belt, approximately in diameter. It was discovered on 16 November 1912, by American astronomer Joel Hastings Metcalf at the Winchester Observatory . The bright S-type asteroid has a rotation period of 6.7 hours. It was named after Harvard University in Cambridge, Massachusetts. Orbit and classification Located in the orbital region of the Flora family (), ''Harvard'' is a non-family asteroid of the main belt's background population when applying the hierarchical clustering method to its proper orbital elements. It orbits the Sun in the inner asteroid belt at a distance of 1.8–2.6 AU once every 3 years and 3 months (1,193 days; semi-major axis of 2.2 AU). Its orbit has an eccentricity of 0.17 and an inclination of 4 ° with respect to the ecliptic. The body's observation arc begins at Heidelberg Observatory on 9 December 1912, or three weeks after ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
729 Watsonia
729 Watsonia is a rare-type asteroid and namesake of the Watsonia family from the central region of the asteroid belt. It was named after the Canadian-American astronomer James C. Watson. ''Watsonia'' occulted the star 54 Leonis (HIP 53417, a 4.3 Magnitude Star) on 2013 Mar 03 at 01:48. Description This object is the namesake of the Watsonia family, an Asteroid family of approximately 100 asteroids that share similar spectral properties and orbital elements; hence they may have arisen from the same collisional event. All members have a relatively high orbital inclination Orbital inclination measures the tilt of an object's orbit around a celestial body. It is expressed as the angle between a reference plane and the orbital plane or axis of direction of the orbiting object. For a satellite orbiting the Earth .... References External links * * Watsonia asteroids Watsonia Watsonia STGD-type asteroids (Tholen) L-type asteroids (SMASS) 19120209 { ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
726 Joëlla
726 Joëlla is a minor planet orbiting the Sun. It was discovered on November 22, 1911, by Joel Hastings Metcalf, in Winchester, Massachusetts, in the United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territorie .... References External links * * Background asteroids Joella 19111122 Joella {{beltasteroid-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
696 Leonora
696 Leonora is a Meliboean asteroid orbiting the Sun in the asteroid belt. It was discovered 10 January 1910 by American astronomer Joel Hastings Metcalf, at Taunton, Massachusetts. It was named by Arthur Snow of the United States Naval Observatory United States Naval Observatory (USNO) is a scientific and military facility that produces geopositioning, navigation and timekeeping data for the United States Navy and the United States Department of Defense. Established in 1830 as the Depo ..., who computed the orbit for the planet, after his wife, Mary Leonora Snow. References External links Lightcurve plot of 696 Leonora Palmer Divide Observatory, B. D. Warner (2005) Asteroid Lightcurve Database (LCDB) query form) Dictionary of Minor Planet Names Google books – Observatoire de Genève, Raoul Behrend – Minor Planet Center * * Meliboea asteroids Leonora Leonora XC-type asteroids (Tholen) 19100110 {{beltasteroid-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
695 Bella
695 Bella is a minor planet orbiting the Sun. Although this asteroid has dynamic properties that make it a candidate for the Maria family, the spectral properties of the object indicate it is most likely an interloper. Instead, it may have been spalled off from 6 Hebe or its parent body. 695 Bella and 6 Hebe orbit on opposite sides of the 3:1 Kirkwood gap, and the two have similar orbital elements. References External links * * Maria asteroids Bella Bella Bella is a feminine given name. It is a diminutive form of names ending in -bella. ''Bella'' is related to the Italian, Spanish, Greek, Portuguese and Latin words for beautiful, to the name Belle, meaning ''beautiful'' in French. It increased in ... S-type asteroids (Tholen) 19091107 {{beltasteroid-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
694 Ekard
694 Ekard is a minor planet orbiting the Sun that was discovered by American astronomer Joel Hastings Metcalf on November 7, 1909. The asteroid's name comes from the reverse spelling of Drake University in Des Moines, Iowa, where Seth Barnes Nicholson and his wife calculated its orbit. Photometric observations of this asteroid gave a light curve with a period of 5.925 hours and a brightness variation of 0.50 in magnitude. Measurements of the thermal inertia of 694 Ekard give a value of around 100–140 J m−2 K−1 s−1/2, compared to 50 for lunar regolith and 400 for coarse sand in an atmosphere. 13-cm radar observations of this asteroid from the Arecibo Observatory The Arecibo Observatory, also known as the National Astronomy and Ionosphere Center (NAIC) and formerly known as the Arecibo Ionosphere Observatory, is an observatory in Barrio Esperanza, Arecibo, Puerto Rico owned by the US National Science F ... between 1980 and 1985 were used to produce a diameter estima ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
691 Lehigh
691 Lehigh is a minor planet (the earlier term for an asteroid) orbiting the Sun, discovered in 1909. It is named "Lehigh" after Lehigh University Lehigh University (LU) is a private research university in Bethlehem, Pennsylvania in the Lehigh Valley region of eastern Pennsylvania. The university was established in 1865 by businessman Asa Packer and was originally affiliated with the Epis ..., where its orbit was calculated in the Masters Thesis of Joseph B. Reynolds, following the observations of amateur astronomer Joel Metcalf. References External links Planet Lehigh: Early Astronomy Lehigh University – Special Collections Lightcurve plot of 691 Lehigh Palmer Divide Observatory, B. D. Warner (2009) Asteroid Lightcurve Database (LCDB) query form) Dictionary of Minor Planet Names Google books – Observatoire de Genève, Raoul Behrend – Minor Planet Center * * Background asteroids Lehigh Lehigh Lehigh University CD:-type asteroids (Tholen) 19091211 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
690 Wratislavia
690 Wratislavia is a minor planet orbiting the Sun. Wratislavia was discovered on October 16, 1909. IRAS data shows it is about 135 km in diameter. Wratislavia has been studied by radar Radar is a detection system that uses radio waves to determine the distance (''ranging''), angle, and radial velocity of objects relative to the site. It can be used to detect aircraft, ships, spacecraft, guided missiles, motor vehicles, w .... References External links Discovery Circumstances: Numbered Minor Planets (1)-(5000)Minor Planet Center * * Background asteroids Wratislavia Wratislavia CPF-type asteroids (Tholen) 19091016 {{beltasteroid-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
675 Ludmilla
675 Ludmilla is a minor planet orbiting the Sun. It was named after Mikhail Glinka's opera ''Ruslan and Lyudmila Ruslan may refer to: * ''Ruslan'' (film), a 2009 film starring Steven Segal * Ruslan (given name), male name used mainly in Slavic countries, with list of people * Antonov An-124 ''Ruslan'', large Soviet cargo aircraft, later built in Ukraine and ...''. References External links * * 000675 Discoveries by Joel Hastings Metcalf Named minor planets 000675 000675 19080830 {{beltasteroid-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
