Discovery [1] | |
---|---|
Discovered by | OAM |
Discovery site | La Sagra Obs. |
Discovery date | 1 March 2008 |
Designations | |
(185638) Erwinschwab | |
Named after | Erwin Schwab [2] (discoverer of minor planets) |
2008 EU7 ·1995 UZ53 1999 XL246 ·2006 SR87 2006 UP322 | |
main-belt ·(inner) Nysa [3] | |
Orbital characteristics [1] | |
Epoch 4 September 2017 (JD 2458000.5) | |
Uncertainty parameter 0 | |
Observation arc | 20.65 yr (7,543 days) |
Aphelion | 2.7570 AU |
Perihelion | 2.0058 AU |
2.3814 AU | |
Eccentricity | 0.1577 |
3.67 yr (1,342 days) | |
212.35° | |
0° 16m 5.52s / day | |
Inclination | 2.8854° |
33.611° | |
134.13° | |
Physical characteristics | |
Dimensions | 0.95 km (estimate at 0.20) [4] 1.8 km (estimate at 0.057) [4] |
17.5 [1] ·17.6 [3] | |
185638 Erwinschwab, provisional designation 2008 EU7, is a potentially sub-kilometer Nysian asteroid from the inner regions of the asteroid belt. It was discovered on 1 March 2008, by OAM-astronomers at the La Sagra Observatory in southern Spain. The asteroid is estimated to measure between 950 meters and 1.8 kilometers in diameter and was named after German astronomer Erwin Schwab in 2009. [2]
Erwinschwab is a member of the Nysa family ( 405 ), [3] the main belt's largest asteroid family with nearly 20 thousand members. The family also known as the Nysa-Polana complex, consisting of several distinct subfamilies. [5] : 23
The asteroid orbits the Sun in the inner main-belt at a distance of 2.0–2.8 AU once every 3 years and 8 months (1,342 days). Its orbit has an eccentricity of 0.16 and an inclination of 3° with respect to the ecliptic. [1]
The body's observation arc begins with its first identification as 1995 UZ53 by Spacewatch at Kitt Peak Observatory in October 1995, more than 12 years prior to its official discovery observation at La Sagra in 2008. [2]
The asteroid's spectral type is unknown. [1] The Nysa family complex consist of S-, F- and C-type asteroids (SFC). [5] : 23
Erwinschwab has not been observed by any space-based telescope such as the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite or the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer. Based on an assumed albedo of 0.20, which is typical for silicaceous asteroid, the asteroid measures 0.95 kilometers in diameter for an absolute magnitude of 17.5. [4] Since members of the Nysa family complex also include carbonaceous asteroid, Erwinschwab's albedo may also be estimated at 0.057, which translates into a larger diameter of 1.8 kilometers. [4]
As of 2017, no rotational lightcurve of Erwinschwab has been obtained from photometric observations. The body's rotation period, pole axis and shape remain unknown. [6]
This minor planet was named after German amateur astronomer Erwin Schwab (born 1964), a prolific discoverer of minor planets at the Starkenburg Observatory, Tzec Maun and Taunus observatories since the early 1980s. [2] During his astrometric observation at Taunus, Schwab has collaborated with astronomer Rainer Kling. The official naming citation was published by the Minor Planet Center on 7 June 2009 ( M.P.C. 66244). [7]
4659 Roddenberry, provisional designation 1981 EP20, is a Nysian asteroid from the inner regions of the asteroid belt, approximately 3.6 kilometers (2.2 miles) in diameter. It was discovered on 2 March 1981, by American astronomer Schelte Bus at the Siding Spring Observatory in Australia. The likely S-type asteroid has an unsecured rotation period of 12 hours. It was named for American screenwriter Gene Roddenberry.
25924 Douglasadams, provisional designation 2001 DA42, is a Nysian asteroid from the inner regions of the asteroid belt, approximately 2.4 kilometers in diameter. It was discovered on 19 February 2001, by astronomers of the Lincoln Near-Earth Asteroid Research at the Lincoln Laboratory's Experimental Test Site in New Mexico, United States. The asteroid was named for novelist Douglas Adams.
1767 Lampland, provisional designation 1962 RJ, is an Eoan asteroid from the outer regions of the asteroid belt, approximately 15 kilometers in diameter. It was discovered on 7 September 1962, by astronomers of the Indiana Asteroid Program at Goethe Link Observatory in Indiana, United States. The asteroid was named after American astronomer Carl Lampland.
51823 Rickhusband, provisional designation 2001 OY28, is a dark Lixiaohua asteroid from the outer regions of the asteroid belt, approximately 9 kilometers in diameter.
57424 Caelumnoctu, provisional designation 2001 SP22, is an Eoan asteroid from the outer regions of the asteroid belt, approximately 7 kilometers in diameter. It was discovered on 16 September 2001, by astronomers of the Lincoln Near-Earth Asteroid Research at Lincoln Laboratory's Experimental Test Site near Socorro, New Mexico. The asteroid was named for the BBC television programme The Sky at Night.
9931 Herbhauptman, provisional designation 1985 HH, is a stony Nysian asteroid from the inner regions of the asteroid belt, approximately 5 kilometers in diameter. It was discovered on 18 April 1985, by Czech astronomer Antonín Mrkos at the Kleť Observatory in former Czechoslovakia. The S-type asteroid has a rotation period of 4.44 hours. It was named after American mathematician and Nobel laureate Herbert A. Hauptman.
1193 Africa, provisional designation 1931 HB, is a stony Eunomian asteroid from the central region of the asteroid belt, approximately 12 kilometers in diameter. It was discovered by South African astronomer Cyril Jackson at Johannesburg Observatory on 24 April 1931. The asteroid was named for the African continent.
2325 Chernykh, provisional designation 1979 SP, is a dark Themistian asteroid from the outer regions of the asteroid belt, approximately 23 kilometers in diameter. It was discovered on 25 September 1979, by Czech astronomer Antonín Mrkos at the Klet Observatory in the Czech Republic. The asteroid was named after Russian astronomer couple Lyudmila Chernykh and Nikolai Chernykh.
3268 De Sanctis, provisional designation 1981 DD, is a Vestian asteroid from the inner regions of the asteroid belt, approximately 6 kilometers in diameter. It was discovered on 26 February 1981, by European astronomers Henri Debehogne and Giovanni de Sanctis at ESO's La Silla Observatory in northern Chile. The asteroid was named after the second discoverer. The assumed S-type asteroid has a rotation period of 17 hours.
4525 Johnbauer, provisional designation 1982 JB3, is dark Mitidika asteroid from the central regions of the asteroid belt, approximately 10 kilometers in diameter. It was discovered on 15 May 1982, by astronomer couple Eleanor and Eugene Shoemaker, as well as Peter Wilder at the Palomar Observatory in California, United States. The asteroid was named after John Bauer, physics teacher at San Diego City College.
3714 Kenrussell, provisional designation 1983 TT1, is a Eunomian asteroid from the central regions of the asteroid belt, approximately 10 kilometers (6 miles) in diameter. It was discovered on 12 October 1983, by American astronomer Edward Bowell at the Anderson Mesa Station near Flagstaff, Arizona, in the United States. It was named for Australian astronomer Kenneth S. Russell. The presumably stony asteroid has a rotation period of 5.25 hours.
2905 Plaskett, provisional designation 1982 BZ2, is a stony Gefionian asteroid from the central regions of the asteroid belt, approximately 10 kilometers in diameter. It was discovered on 24 January 1982, by American astronomer Edward Bowell at the Anderson Mesa Station near Flagstaff, Arizona. The asteroid was named after Canadian astronomers John Stanley Plaskett and Harry Hemley Plaskett.
3074 Popov, provisional designation 1979 YE9, is a carbonaceous Nysian asteroid from the inner regions of the asteroid belt, approximately 10 kilometers (6 miles) in diameter. It was discovered on 24 December 1979, by Soviet–Russian astronomer Lyudmila Zhuravleva at the Crimean Astrophysical Observatory in Nauchnyj on the Crimean peninsula. The B-type asteroid has an unknown rotation period. It was named after Russian physicist Alexander Stepanovich Popov, an early radio pioneer in Russia.
4001 Ptolemaeus, provisional designation 1949 PV, is a Florian asteroid from the inner regions of the asteroid belt, approximately 5 kilometers in diameter. It was discovered on 2 August 1949, by German astronomer Karl Reinmuth at the Heidelberg-Königstuhl State Observatory in Heidelberg, Germany. In 1991, the International Astronomical Union named the S-type asteroid after Greco-Roman astronomer Ptolemy.
5208 Royer (prov. designation: 1989 CH1) is a stony Marian asteroid from the central regions of the asteroid belt, approximately 8 kilometers (5 miles) in diameter. It was discovered on 6 February 1989, by astronomer Eleanor Helin at the Palomar Observatory. The S-type asteroid has a rotation period of 3.87 hours and was named after American priest and amateur astronomer, Ronald Royer.
2384 Schulhof (prov. designation: 1943 EC1) is a mid-sized asteroid and the namesake of the Schulhof family, located in the Eunomian region of the intermediate asteroid belt. It was discovered on 2 March 1943, by French astronomer Marguerite Laugier at Nice Observatory in southeastern France. The asteroid was later named after Hungarian astronomer Lipót Schulhof. The presumed S-type asteroid has a short rotation period of 3.3 hours and measures approximately 12 kilometers (7.5 miles) in diameter.
2278 Götz, provisional designation 1953 GE, is a dark background asteroid from the inner regions of the asteroid belt's background population, approximately 12 kilometers in diameter. It was discovered on 7 April 1953, by German astronomer Karl Reinmuth at the Heidelberg Observatory in southwest Germany. The F/C-type asteroid was named after astronomer Paul Götz.
10140 Villon, provisional designation 1993 SX4, is a Nysian asteroid from the inner regions of the asteroid belt, approximately 5 kilometers (3 miles) in diameter. It was discovered on 19 September 1993, by Belgian astronomer Eric Elst at the CERGA Observatory at Caussols in France. It was named after 15th-century French poet François Villon.
164589 La Sagra, provisional designation 2007 PC11, is an asteroid of the Euterpe family from the inner regions of the asteroid belt, approximately 1.2 kilometers (0.75 miles) in diameter. It was discovered on 11 August 2007, by astronomers of the Astronomical Observatory of Mallorca at its robotic La Sagra Observatory in Grenada, Spain. It was named after Mount La Sagra and the discovering La Sagra Observatory.
342843 Davidbowie, provisional designation 2008 YN3, is a Henan asteroid from the central region of the asteroid belt, approximately 1.4 kilometers in diameter.