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C. Robert Luther
Karl Theodor Robert Luther (April 16, 1822, Świdnica – February 15, 1900 Düsseldorf), normally published as Robert Luther, was a German astronomer. While working at the Bilk Observatory in Düsseldorf, Germany, he searched for asteroids and discovered 24 of them between 1852 and 1890. Seven times Lalande Prize winner. Biography Karl Theodor Robert Luther was born on April 16, 1822 to August Luther and Wilhelmine von Ende. He was home schooled and studied in the local high school. In 1841, he moved to Wrocław, Breslau where he studied until 1843. In 1843 Luther moved to Berlin to study astronomy. He was a student of Johann Franz Encke and helped him in his astronomical calculations and creating the astronomical almanac. In 1850 he became a second observer. In 1851, Franz Brünnow invited Luther to the Düsseldorf-Bilk Observatory to become a director of the observatory after him. Luther married Caroline (nee Marker) and they had one son, William. Luther died in 1900 after a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Świdnica
Świdnica (; german: Schweidnitz; cs, Svídnice; szl, Świdńica) is a city in south-western Poland in the region of Silesia. As of 2019, it has a population of 57,014 inhabitants. It lies in Lower Silesian Voivodeship, being the seventh largest town in that voivodeship. From 1975–98 it was in the former Wałbrzych Voivodeship. It is now the seat of Świdnica County, and also of the smaller district of Gmina Świdnica (although it is not part of the territory of the latter, as the town forms a separate urban gmina). Świdnica became part of the Wałbrzych agglomeration on 23 January 2014. Świdnica is home to the St. Stanislaus and St. Wenceslaus Cathedral and the Church of Peace, two landmark churches listed as Historic Monuments of Poland with the latter also listed as a UNESCO World Heritage Site. History The city's name was first recorded as ''Svidnica'' in 1070, when it was part of Piast-ruled Poland. Świdnica became a town in 1250, although no founding documen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
35 Leukothea
Leukothea (minor planet designation: 35 Leukothea) is a large, dark asteroid from the asteroid belt. It was discovered by German astronomer Karl Theodor Robert Luther on April 19, 1855, and named after Leukothea, a sea goddess in Greek mythology. 35 Leukothea is a C-type asteroid in the Tholen classification system, suggesting a carbonaceous composition. It is orbiting the Sun with a period of and has a cross-sectional size of 103.1 km. Photometric observations of this asteroid from the Organ Mesa Observatory in Las Cruces, New Mexico during 2010 gave a light curve with a rotation period of hours and a brightness variability of in magnitude. This is consistent with previous studies in 1990 and 2008. The computed Lyapunov time for this asteroid is 20,000 years, indicating that it occupies a chaotic orbit that will change randomly over time because of gravitational perturbations of the planets. References External links * * {{DEFAULTSORT:000035 C-type asteroids ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
108 Hecuba
Hecuba (minor planet designation: 108 Hecuba) is a fairly large and bright main-belt asteroid. It was discovered by Karl Theodor Robert Luther on 2 April 1869, and named after Hecuba, wife of King Priam in the legends of the Trojan War in Greek Mythology. This object is orbiting the Sun with a period of 5.83 years and an eccentricity of 0.06. It became the first asteroid discovered to orbit near a 2:1 mean-motion resonance with the planet Jupiter, and is the namesake of the Hecuba group of asteroids. In the Tholen classification system, it is categorized as a stony S-type asteroid, while the Bus asteroid taxonomy system lists it as an Sw asteroid. Observations performed at the Palmer Divide Observatory in Colorado Springs, Colorado in during 2007 produced a light curve with a period of 17.859 ± 0.005 hours with a brightness variation of 0.11 ± 0.02 in magnitude. Hecuba orbits within the Hygiea family of asteroids but is not otherwise related to other family members because ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
95 Arethusa
Arethusa (minor planet designation: 95 Arethusa) is a large main-belt asteroid. It was discovered by German astronomer Robert Luther on 23 November 1867, and named after one of the various Arethusas in Greek mythology. Arethusa has been observed occulting a star three times: first on 2 February 1998, and twice in January 2003. This object is orbiting the Sun with a period of 5.36 years and an eccentricity of 0.15. The cross-section diameter is around 136 km and it is spinning with a rotation period of 8.7 hours. The spectrum matches a C-type asteroid, indicating a dark surface with a primitive carbonaceous composition. References External links Asteroid Occultation Results for North Americao2008/04/16with 2 chords Chord may refer to: * Chord (music), an aggregate of musical pitches sounded simultaneously ** Guitar chord a chord played on a guitar, which has a particular tuning * Chord (geometry), a line segment joining two points on a curve * Chord (a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
84 Klio
Klio ( minor planet designation: 84 Klio) is a fairly large and very dark main-belt asteroid. It was discovered by R. Luther on August 25, 1865, and named after Clio, the Muse of history in Greek mythology. The name Clio had previously been suggested by the discoverer of 12 Victoria, and that is the name B. A. Gould, editor of the prestigious Astronomical Journal, adopted for that asteroid, because of the controversy over the name Victoria. An occultation by Klio over a dim star was observed on April 2, 1997. Photometric observations of this asteroid during 2007 at the Organ Mesa Observatory in Las Cruces, New Mexico were used to create a light curve plot. This showed a synodic rotation period of 23.562 ± 0.001 hours and a brightness variation of 0.21 ± 0.02 magnitude Magnitude may refer to: Mathematics *Euclidean vector, a quantity defined by both its magnitude and its direction *Magnitude (mathematics), the relative size of an object *Norm (mathematics), a term f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
82 Alkmene
Alkmene (minor planet designation: 82 Alkmene) is a main-belt asteroid. Alkmene was discovered by R. Luther on 7 November 1864 and named after Alcmene, the mother of Herakles in Greek mythology. Based on IRAS data, Alkmene is estimated to be about in diameter. A satellite has been suggested based on 1985 lightcurve data. Asteroid Alkmene occulted the apparent magnitude 7.5 star HIP 99229 in the constellation of Capricornus on 18 September 2014 around 06:41 UT (17 September 23:41 PDT) and was centered on Sacramento, CA.Interactive GoogleMap of Shadow Path Alkmene projected an eclipse shadow that moves at about . Asteroid occultations allow for accurate 2-dimensional mapping of an asteroids silhouette when observed by multiple telescopes separated by about 10 km (6.2 mi). < ...
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78 Diana
Diana (minor planet designation: 78 Diana) is a large and dark main-belt asteroid. It was discovered by German astronomer Karl Theodor Robert Luther, Robert Luther on March 15, 1863, and named after Diana (goddess), Diana, Roman mythology, Roman goddess of the hunt. The asteroid is orbiting the Sun at a distance of with a period of 4.24 years and an orbital eccentricity, eccentricity (ovalness) of 0.207. The orbital plane is tilted at an angle of 8.688° relative to the plane of the ecliptic. Its composition is carbonate, carbonaceous and primitive. Photometry (astronomy), Photometric observations of this asteroid during 1986 and 2006–08 gave a light curve with a rotation period of 7.2991 hours and a brightness variation in the range 0.02–0.104 Magnitude (astronomy), magnitude. Based upon radar data, the near surface solid density of the asteroid is 2.7. 78 Diana occultation, occulted a star on September 4, 1980. A diameter of 116 km was measured, closely matching ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
71 Niobe
Niobewith the stress on the first syllable (minor planet designation: 71 Niobe) is a stony Gallia asteroid and relatively slow rotator from the central regions of the asteroid belt, approximately in diameter. It was discovered by the German astronomer Robert Luther on 13 August 1861, and named after Niobe, a character in Greek mythology. In 1861, the brightness of this asteroid was shown to vary by astronomer Friedrich Tietjen. Description ''Niobe'' is a member of the Gallia family (), a small family of nearly 200 known stony asteroids. In 2006, it was examined by radar using the Arecibo Observatory radio telescope in Puerto Rico. This was supplemented by optical observations intended to build a lightcurve. The resulting estimated rotation period of 35.6 hours, or 1.48 Earth days, superseded an earlier estimate of the rotation period as 14.3 hours. The radar data produced an estimate of a maximum equatorial diameter of 94 km, which is consistent with earlier estimates ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
68 Leto
Leto (minor planet designation: 68 Leto) is a large main belt asteroid that is orbiting the Sun with a period of 4.64 years. Its spectral type is S, suggesting a stony, silicate composition. The asteroid was discovered by German astronomer Robert Luther on April 29, 1861, and is named after Leto, the mother of Apollo and Artemis in Greek mythology. It has an estimated cross-sectional size of 123 km and a rotation period of 14.8 hours. References External links * * Background asteroids Leto Leto Leto In ancient Greek mythology and Ancient Greek religion, religion, Leto (; grc-gre, Λητώ , ''Lētṓ'', or , ''Lātṓ'' in Ancient Greek dialects#Provenance, Doric Greek) is a goddess and the mother of Apollo, the god of music, and Artemis ... S-type asteroids (Tholen) 18610429 {{S-beltasteroid-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
58 Concordia
Concordia (minor planet designation: 58 Concordia) is a fairly large main-belt asteroid that is orbiting the Sun with a period of 4.44 years, a semimajor axis of , and a low eccentricity of 0.043. It is classified as a C-type asteroid, meaning that its surface is very dark and it is likely carbonaceous in composition. The surface spectra displays indications of hydrated minerals created through aqueous alteration. The object is rotating with a sidereal period of and pole orientations of (, ) and (, ). It belongs to the Hungaria family of asteroids and has a satellite with an orbital period of 14.29 h. Concordia was discovered by German astronomer Robert Luther on March 24, 1860. At Luther's request, it was named by Carl Christian Bruhns of the University of Leipzig after Concordia, the Roman goddess of harmony In music, harmony is the process by which individual sounds are joined together or composed into whole units or compositions. Often, the term harmony refe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
57 Mnemosyne
Mnemosyne ( minor planet designation: 57 Mnemosyne) is a large main belt asteroid. It is an S-type asteroid in composition. It was discovered by Robert Luther on 22 September 1859 from Düsseldorf. Its name was chosen by Martin Hoek, director of the Utrecht Observatory, in reference to Mnemosyne, a Titaness in Greek mythology. The orbital period of this asteroid is close to a 2:1 commensurability with Jupiter, which made it useful for perturbation measurements to derive the mass of the planet. Photometry measurements made at the Oakley Observatory during 2006 produced a lightcurve with a rotation period of and an amplitude of in magnitude. It has an estimated span of and a mass of . References External links * * Background asteroids Mnemosyne Mnemosyne In Greek mythology and ancient Greek religion, Mnemosyne (; grc, Μνημοσύνη, ) is the goddess of memory and the mother of the nine Muses by her nephew Zeus. In the Greek tradition, Mnemosyne is o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
53 Kalypso
Kalypso (minor planet designation: 53 Kalypso) is a large and very dark main belt asteroid that was discovered by German astronomer Robert Luther on April 4, 1858, at Düsseldorf. It is named after Calypso, a sea nymph in Greek mythology, a name it shares with Calypso, a moon of Saturn. The orbit of 53 Kalypso places it in a mean motion resonance with the planets Jupiter and Saturn. The computed Lyapunov time for this asteroid is 19,000 years, indicating that it occupies a chaotic orbit that will change randomly over time because of gravitational perturbations of the planets. Photometric observations of this asteroid during 2005–06 gave a light curve with a period of 18.075 ± 0.005 hours and a brightness variation of 0.14 in magnitude. In 2009, a photometric study from a different viewing angle was performed at the Organ Mesa Observatory in Las Cruces, New Mexico, yielding a rotation period of 9.036 ± 0.001 with a brightness variation of 0.14 ± 0.02 magnitude. This is exa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
