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Neujmin
Grigory Nikolayevich Neujmin (; – 17 December 1946) was a Georgian–Russian astronomer, native of Tbilisi in Georgia (country), Georgia, and a discoverer of numerous minor planets as well as 6 periodic comet, periodic and a List of hyperbolic comets, hyperbolic comet at the Pulkovo Observatory, Pulkovo and Simeiz Observatory, Simeiz Observatories during the first half of the 20th century. Discoveries The Minor Planet Center credits his discoveries under the name "List of minor planet discoverers#G. N. Neujmin, G. N. Neujmin", and his surname appears this way in the literature. However, the modern English transliteration of his name would be Neuymin. Neujmin is credited with the discovery of 74 asteroids, and notably 951 Gaspra and 762 Pulcova. He also discovered and co-discovered 6 Jupiter-family comets, namely 25D/Neujmin, 28P/Neujmin, 42P/Neujmin, 57P/du Toit-Neujmin-Delporte (including List of numbered comets#57P/du Toit–Neujmin–Delporte, fragment A) and 58P/Jackso ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1129 Neujmina
1129 Neujmina (Minor planet provisional designation, ''prov. designation'': ) is an Eos asteroid from the outer regions of the asteroid belt. It was discovered on 8 August 1929, by astronomer Praskov'ja Georgievna Parchomenko, Praskoviya Parchomenko at the Simeiz Observatory on the Crimean peninsula. The stony S-type asteroid has a rotation period of 5.1 hours and measures approximately in diameter. It was named after Soviet astronomer Grigory Neujmin. Orbit and classification ''Neujmina'' is a member the Eos family (), the largest asteroid family of the Kirkwood gap, outer main belt consisting of nearly 10,000 asteroids. It orbits the Sun at a distance of 2.8–3.3 Astronomical unit, AU once every 5 years and 3 months (1,919 days). Its orbit has an orbital eccentricity, eccentricity of 0.08 and an orbital inclination, inclination of 9Degree (angle), ° with respect to the ecliptic. The asteroid was first identified as at Simeiz in November 1911, followed by at Heidelb ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Numbered Comets
This is a list of periodic comets that were numbered by the Minor Planet Center after having been observed on at least two occasions. Their orbital periods vary from 3.2 to 366 years. there are 499 numbered comets (1P–499P). There are 405 Jupiter-family comets (JFCs), 38 Encke-type comets (ETCs), 14 Halley-type comets (HTCs), five Chiron-type comets (CTCs), and one long-period comet ( 153P). 75 bodies are also near-Earth comets (NECs). In addition, eight numbered comets are principally classified as minor planets – five main-belt comets, two centaurs (CEN), and one Apollo asteroid – and display characteristics of both an asteroid and a comet. Occasionally, comets will break up into multiple chunks, as volatiles coming off the comet and rotational forces may cause it to break into two or more pieces. An extreme example of this is 73P/Schwassmann–Wachmann, which broke into over 50 pieces during its 1995 perihelion. List Multiples 51P/Harrington : '' back ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neujmin (crater)
Neujmin is a lunar impact crater on the Moon's far side. It is nearly attached to the west-southwest of the smaller crater Waterman, and lies to the southwest of the prominent Tsiolkovskiy. This is an eroded crater formation that has been somewhat deformed by subsequent impacts. The circular crater Neujmin P lies across the southwestern rim. There are multiple small craterlets along the northwestern rim and inner wall, most likely secondary impacts from Tsiolkovskiy, and both the northern and southern rims are disrupted. There is a dark-halo crater on the floor of Neujmin, which typically indicates that darker material, such as mare lava, exists below the present surface. The crater was named after Soviet astronomer Grigory N. Neujmin by the IAU The International Astronomical Union (IAU; , UAI) is an international non-governmental organization (INGO) with the objective of advancing astronomy in all aspects, including promoting astronomical research, outreach, educat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
28P/Neujmin
28P/Neujmin, also known as Neujmin 1, is a large periodic comet in the Solar System. With a perihelion distance (closest approach to the Sun) of , this comet does not make close approaches to the Earth. Orbital and physical characteristics The comet nucleus is estimated to be in diameter with a low albedo of 0.025. Since 28P has such a large nucleus, it became brighter than the 20th magnitude in early 2019, roughly 2 years before coming to perihelion An apsis (; ) is the farthest or nearest point in the orbit of a planetary body about its primary body. The line of apsides (also called apse line, or major axis of the orbit) is the line connecting the two extreme values. Apsides perta .... When it came to opposition in May 2020, when it was still from the Sun, it had an apparent magnitude around 16.9. But during the 2021 perihelion passage the comet was on the opposite side of the Sun as the Earth. The comet is not known for bright outbursts of activity. Refere ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
58P/Jackson–Neujmin
58P/Jackson–Neujmin is a periodic comet in the Solar System with a current orbital period of 8.19 years. Observational history The comet was discovered on a photographic plate on 20 September 1936 by Cyril Jackson of the Union Observatory, South Africa, who described it as faint and diffuse, with a brightness of magnitude 12. On the following day Grigory N. Neujmin of the Simeis Observatory in Crimea discovered it independently. Fernand Rigaux of the Royal Observatory in Uccle, Belgium then also found it on an earlier photographic plate exposed on 9 September 1936. The predicted 1945 apparition was not observed due to uncertainty about its position and appearance date and even Elizabeth Roemer was unable to find it in 1953. 1961 was again very difficult but Charles Kowal managed to relocate it in September, 1970. The 1995 appearance was more favourable and brightness reached a magnitude of 10. The comet wasn't observed during its 2004 or 2012 apparitions, and was thoug ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
42P/Neujmin
42P/Neujmin, also known as Neujmin 3, is a periodic comet 2 km in diameter. This comet and 53P/Van Biesbroeck are fragments of a parent comet that split in March 1845. The comet did not come within 1 AU of a planet in the 20th century, but will pass 0.04 AU from asteroid on July 17, 2036. The |
25D/Neujmin
25D/Neujmin, otherwise known as Comet Neujmin 2, is a periodic comet in the Solar System discovered by Grigory N. Neujmin ( Simeis) on February 24, 1916. It was last observed on February 10, 1927. It was confirmed by George Van Biesbroeck (Yerkes Observatory, Wisconsin, United States) and Frank Watson Dyson (Greenwich Observatory, England) on March 1. A prediction by Andrew Crommelin ( Royal Observatory, Greenwich, England England is a Countries of the United Kingdom, country that is part of the United Kingdom. It is located on the island of Great Britain, of which it covers about 62%, and List of islands of England, more than 100 smaller adjacent islands. It ...) for 1921 was considered unfavourable and no observations were made. The comet was recovered in 1926. Searches in 1932 and 1937 were unsuccessful. Consequently, this comet has remained a lost comet since 1927. and using the JPL Horizons nominal orbit, the comet is still expected to come to perihelion arou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
751 Faïna
751 Faïna ('' prov. designation:'' ''or'' ) is a very large background asteroid from the central regions of the asteroid belt, approximately in diameter. It was discovered on 28 April 1913, by Russian astronomer Grigory Neujmin at the Simeiz Observatory on the Crimean peninsula. The elongated C-type asteroid (Ch) has a rotation period of 23.7 hours. It was named after Faina Mikhajlovna Neujmina, colleague and first wife of the discoverer. Orbit and classification Located close to the region of the stony Eunomia family (), ''Faïna'' is a non-family asteroid of the main belt's background population when applying the modern synthetic hierarchical clustering method (HCM) by Nesvorný as well as Milani and Knežević (AstDys). However, in the 1995 HCM-analysis by Zappalà, ''Faïna'' is the parent body of the tiny Faïna family, which is not recognized by modern analysis. The HCM-method is based on an object's proper orbital elements to group asteroids into families. ''F ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
748 Simeïsa
748 Simeïsa (''Minor planet provisional designation, prov. designation:'' ''or'' ) is a very large Hilda asteroid from the outermost regions of the asteroid belt, approximately in diameter. It was discovered on 14 March 1913, by Russian astronomer Grigory Neujmin at the Simeiz Observatory on the Crimean peninsula. The dark P-type asteroid has a rotation period of 11.9 hours and a shape that is reminiscent of a tetrahedron. It was the first asteroid discovery made in Russia and named after the discovering observatory and its nearby Crimean town, Simeiz. Orbit and classification ''Simeïsa'' is a member of the distant orbital Hilda group of asteroids, which stay in a 3:2 orbital resonance with the gas giant Jupiter. It is however not a member of the collisional Hilda family () but a non-Asteroid family, family asteroid of the Background asteroid, background population when applying the hierarchical clustering method to its proper orbital elements. It orbits the Sun in th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Praskov'ja Georgievna Parchomenko
This is a list of minor-planet discoverers credited by the Minor Planet Center with the discovery of one or several minor planets (such as near-Earth and main-belt asteroids, Jupiter trojans and distant objects). , the discovery of 612,011 numbered minor planets are credited to 1,141 astronomers and 253 observatories, telescopes or surveys ''(see )''. On how a discovery is made, ''see observations of small Solar System bodies. For a description of the tables below, see ''. Discovering astronomers Discovering dedicated institutions Discovering sites Notes The discovery table consist of the following fields: * Astronomers and Institutions: links to the corresponding article about the discovering astronomer or institution on Wikipedia. If not linked, the displayed name should be a redirect to this list. For example, the page forwards to the anchored table row using the astronomer's MPC-name as ID. * Discoveries: displays the total number of discovered and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Minor Planet Discoverers
This is a list of minor-planet discoverers credited by the Minor Planet Center with the discovery of one or several minor planets (such as near-Earth and main-belt asteroids, Jupiter trojans and distant objects). , the discovery of 612,011 numbered minor planets are credited to 1,141 astronomers and 253 observatories, telescopes or surveys ''(see )''. On how a discovery is made, ''see observations of small Solar System bodies. For a description of the tables below, see ''. Discovering astronomers Discovering dedicated institutions Discovering sites Notes The discovery table consist of the following fields: * Astronomers and Institutions: links to the corresponding article about the discovering astronomer or institution on Wikipedia. If not linked, the displayed name should be a redirect to this list. For example, the page forwards to the anchored table row using the astronomer's MPC-name as ID. * Discoveries: displays the total number of discovere ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
951 Gaspra
951 Gaspra is an S-type asteroid, S-type asteroid that orbits very close to the inner edge of the asteroid belt. Gaspra was discovered by Russian astronomer G. N. Neujmin in 1916. Neujmin named it after Gaspra, a Black Sea retreat that was visited by his contemporaries, such as Maxim Gorky, Gorky and Tolstoy. Gaspra was the first asteroid ever to be closely approached when it was visited by the ''Galileo spacecraft, Galileo'' spacecraft, which flew by on its way to Jupiter on 29 October 1991. Physical characteristics Apart from a multitude of small craters, Gaspra has half a dozen large flat areas and concavities. One of these flat areas, Dunne Regio, is a area that is flat to within . It is uncertain whether these are the result of impacts or whether they are instead facets formed when Gaspra broke off its parent asteroid. In the weak, lopsided gravity of Gaspra, impact craters would naturally take on such flat, lopsided shapes, making this determination difficult. The flat fac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
