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Borrelly
Alphonse Louis Nicolas Borrelly (December 8, 1842 – February 28, 1926) was a French astronomer born in Roquemaure, Gard. He joined the Marseille Observatory in 1864. In the course of his career, he discovered a number of asteroids and comets, including the periodic comet 19P/Borrelly. He also discovered five New General Catalogue, NGC objects, all galaxies. The French Academy of Sciences awarded him the Valz Prize, Prix Valz for 1903 and the Lalande Prize, Prix Lalande for 1909. The asteroid 1539 Borrelly was named in his honor. In 1913, he received the Prix Jules Janssen, the highest award of the Société astronomique de France, the French astronomical society. Discoveries Comets discovered or co-discovered The following is an incomplete list of comets discovered or co-discovered by Borrelly: * C/1873 Q1 (Borrelly) * C/1877 C1 (Borrelly) * C/1877 G2 (Swift-Borrelly-Block) * C/1889 X1 (Borrelly) * C/1900 O1 (Borrelly–Brooks) * 19P/Borrelly * C/1909 L1 (Borrelly-Daniel) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
19P/Borrelly
Comet Borrelly or Borrelly's Comet (official designation: 19P/Borrelly) is a comet with a period of 6.85 years that was visited by the spacecraft Deep Space 1 in 2001. The comet last came to perihelion (closest approach to the Sun) on February 1, 2022 and will next come to perihelion on December 11, 2028. Deep Space 1 returned images of the comet's nucleus from 3400 kilometers away. At 45 meters per pixel, it was the highest resolution view ever seen of a comet up until that time. Discovery The comet was discovered by Alphonse Borrelly during a routine search for comets at Marseille, France on December 28, 1904. Exploration Deep Space 1 flyby On September 21, 2001 the spacecraft Deep Space 1, which was launched to test new equipment in space, performed a flyby of Borrelly. It was steered toward the comet during the extended mission of the craft, and presented an unexpected bonus for the mission scientists. Despite the failure of a system that helped determine its ori ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Comet
A comet is an icy, small Solar System body that warms and begins to release gases when passing close to the Sun, a process called outgassing. This produces an extended, gravitationally unbound atmosphere or Coma (cometary), coma surrounding the nucleus, and sometimes a Comet tail, tail of gas and dust gas blown out from the coma. These phenomena are due to the effects of solar radiation and the outstreaming solar wind plasma acting upon the nucleus of the comet. Comet nuclei range from a few hundred meters to tens of kilometers across and are composed of loose collections of ice, dust, and small rocky particles. The coma may be up to 15 times Earth's diameter, while the tail may stretch beyond one astronomical unit. If sufficiently close and bright, a comet may be seen from Earth without the aid of a telescope and can Subtended angle, subtend an arc of up to 30° (60 Moons) across the sky. Comets have been observed and recorded since ancient times by many cultures and religion ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
369 Aëria
369 Aëria provisional designation , is a metallic asteroid and the parent body of the Aeria family. It orbits in the central region of the asteroid belt, rotates every 4.778 hours and measures approximately 65 kilometers in diameter. The asteroid was discovered on 4 July 1893, by French astronomer Alphonse Borrelly at the Marseille Observatory in southeastern France. It was named for " Air", one of the four classical elements: earth, water, air and fire. Orbit and classification ''Aëria'' is the parent body of the Aeria family (), a small asteroid family of less than 300 known members, while the Lightcurve Data Base dynamically groups it to the much larger Eunomia family (). Named members of the Aeria family include 1184 Gaea, 3324 Avsyuk, 130066 Timhaltigin and 144303 Mirellabreschi. ''Aëria'' orbits the Sun in the central main-belt at a distance of 2.4–2.9 AU once every 4 years and 4 months (1,577 days). Its orbit has an eccentricit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
322 Phaeo
322 Phaeo is an asteroid from the central regions of the asteroid belt, approximately in diameter. It was discovered on 27 November 1891, by French astronomer Alphonse Borrelly at the Marseille Observatory in southern France. The presumably metallic X-type asteroid is the principal body of the Phaeo family and has a rotation period of 17.6 hours. It was named for the Greek mythological figure Phaeo, one of the Hyades or nymph A nymph (; ; sometimes spelled nymphe) is a minor female nature deity in ancient Greek folklore. Distinct from other Greek goddesses, nymphs are generally regarded as personifications of nature; they are typically tied to a specific place, land ...s. Several other asteroids were named for other of the Hyades – 193 Ambrosia, 158 Koronis, 217 Eudora, and 308 Polyxo.Lutz D. Schmadel, ''Dictionary of Minor Planet Names'', p. 42. Springer, . References External links Asteroid Lightcurve Database (LCDB) query form) Dictionary of Minor Plan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
233 Asterope
233 Asterope is a large main-belt asteroid that was discovered on 11 May 1883, by French astronomer Alphonse Borrelly at Marseille Observatory in Marseille, France. The asteroid was named after Asterope (or Sterope), one of the Pleiades. This asteroid is orbiting the Sun with a semimajor axis of , a period of 4.34 years, and an eccentricity of 0.10. The orbital plane is inclined by 7.68° to the plane of the ecliptic. It is a rare T-type asteroid and has a relatively dark surface. The spectrum of 233 Asterope bears a resemblance to Troilite, a sulfurous iron mineral found in most iron meteorites. Photometric observations during 1995 show a rotation period of 19.743 hours. Measurements made with the IRAS observatory give a diameter of 109.56 ± 5.04 km and a geometric albedo In astronomy, the geometric albedo of a celestial body is the ratio of its actual brightness as seen from the light source (i.e. at zero phase angle (astronomy), phase angle) to that of a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
198 Ampella
198 Ampella is a Main belt asteroid that was discovered by Alphonse Borrelly on June 13, 1879. The name seems to be the feminine form of Ampelos, a satyr and good friend of Dionysus in Greek mythology. It could also derive from the Ampelose (plural of Ampelos), a variety of hamadryad. It is an S-type asteroid. So far Ampella has been observed occulting a star once, on November 8, 1991, from New South Wales, Australia. This asteroid has been resolved by the W. M. Keck Observatory, resulting in a size estimate of 53 km. It is oblate in shape, with a size ratio of 1.22 between the major and minor axes. Measurements from the IRAS observatory gave a similar size estimate of 57 km. Photometric measurements made in 1993 give a rotation period In astronomy, the rotation period or spin period of a celestial object (e.g., star, planet, moon, asteroid) has two definitions. The first one corresponds to the '' sidereal rotation period'' (or ''sidereal day''), i.e., the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
173 Ino
173 Ino is a large asteroid and the parent body of the Ino family, located in the central regions of the asteroid belt, approximately in diameter. It was discovered on 1 August 1877, by French astronomer Alphonse Borrelly at Marseille Observatory in southern France, and named after the queen Ino from Greek mythology. The dark Xk-type asteroid has a rotation period of 6.15 hours. Orbit and classification ''Ino'' is the parent body and namesake of the Ino family (), an asteroid family in the intermediate main belt with nearly 500 known members. The adjectival form of the asteroid name is "Inoan". It orbits the Sun in the central main-belt at a distance of 2.2–3.3 AU once every 4 years and 6 months (1,659 days; semi-major axis of 2.74 AU). Its orbit has an eccentricity of 0.21 and an inclination of 14 ° with respect to the ecliptic. The body's observation arc begins at Düsseldorf-Bilk Observatory in January 1879, five months after its official discovery ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
172 Baucis
172 Baucis is a large main belt asteroid that was discovered by French astronomer Alphonse Borrelly on February 5, 1877, and named after a fictional character in the Greek legend of Baucis and Philemon. The adjectival form of the name is ''Baucidian.'' It is classified as an S-type asteroid based upon its spectrum. Photometric observations of this asteroid from the southern hemisphere during 2003 gave a light curve that indicated a slow synodic rotation period of 27.417 ± 0.013 hours and a brightness variation of 0.25 in magnitude. Polarimetric study of this asteroid reveals anomalous properties that suggests the regolith consists of a mixture of low and high albedo Albedo ( ; ) is the fraction of sunlight that is Diffuse reflection, diffusely reflected by a body. It is measured on a scale from 0 (corresponding to a black body that absorbs all incident radiation) to 1 (corresponding to a body that reflects ... material. This may have been caused by fragmentation of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
171 Ophelia
171 Ophelia is a large, dark Themistian asteroid that was discovered by French astronomer Alphonse Borrelly on 13 January 1877, and named after Ophelia in Shakespeare's ''Hamlet''. This asteroid is a member of the Themis family of asteroids that share similar orbital elements. It probably has a primitive composition, similar to that of the carbonaceous chondrite meteorites. A 1979 study of the Algol-like light curve produced by this asteroid concluded that it was possible to model the brightness variation by assuming a binary system with a circular orbit, a period of 13.146 hours, and an inclination of 15° to the line of sight from the Earth. Photometric observations of this asteroid at the Leura Observatory in Leura, Australia during 2006 gave a rotation period of 6.6666 ± 0.0002 hours and a brightness variation of 0.50 ± 0.02 in magnitude. This is in agreement with previous studies. Ophelia is also the name of a moon of Uranus Uranus is the seventh planet ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
157 Dejanira
157 Dejanira is a main belt asteroid that was discovered by Alphonse Borrelly on 1 December 1875, and named after the warlike princess Deianira in Greek mythology (''Δηιάνειρα'' in Greek). The Dejanira family of asteroids is named after it. Photometric observations of this asteroid were made in early 2009 at the Organ Mesa Observatory in Las Cruces, New Mexico. The resulting light curve shows a synodic rotation period In astronomy, the rotation period or spin period of a celestial object (e.g., star, planet, moon, asteroid) has two definitions. The first one corresponds to the '' sidereal rotation period'' (or ''sidereal day''), i.e., the time that the objec ... of 15.825 ± 0.001 hours. References External links Lightcurve plot of 157 Dejanira 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 * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
394 Arduina
394 Arduina ('' prov. designation:'' ''or'' ) is an asteroid from the central regions of the asteroid belt. It was discovered by Alphonse Borrelly on 19 November 1894 in Marseille Marseille (; ; see #Name, below) is a city in southern France, the Prefectures in France, prefecture of the Departments of France, department of Bouches-du-Rhône and of the Provence-Alpes-Côte d'Azur Regions of France, region. Situated in the .... References External links * * 000394 Discoveries by Alphonse Borrelly Named minor planets 000394 000394 18941119 {{Beltasteroid-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
146 Lucina
146 Lucina is a main-belt asteroid that was discovered by Alphonse Borrelly on June 8, 1875, and named after Lucina, the Roman goddess of childbirth. It is large, dark and has a carbonaceous composition. The spectra of the asteroid displays evidence of aqueous alteration. Photometric observations of this asteroid made during 1979 and 1981 gave a light curve with a period of 18.54 hours. Two stellar occultations by Lucina have been observed so far, in 1982 and 1989. During the first event, a possible small satellite with an estimated 5.7 km diameter In geometry, a diameter of a circle is any straight line segment that passes through the centre of the circle and whose endpoints lie on the circle. It can also be defined as the longest Chord (geometry), chord of the circle. Both definitions a ... was detected at a distance of 1,600 km from 146 Lucina. A 1992 search using a CCD failed to discover a satellite larger than 0.6 km, although it may have been ob ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
