![]() Modelled shape of Buda from its lightcurve | |
Discovery [1] | |
---|---|
Discovered by | M. F. Wolf |
Discovery site | Heidelberg Obs. |
Discovery date | 30 November 1918 |
Designations | |
(908) Buda | |
Pronunciation | /ˈbuːdə/ [2] |
Named after | Buda, part of the Hungarian city of Budapest [3] |
A918 WD ·1963 ME 1918 EX | |
main-belt [1] [4] ·(inner) background [5] [6] | |
Orbital characteristics [4] | |
Epoch 31 May 2020 (JD 2459000.5) | |
Uncertainty parameter 0 | |
Observation arc | 101.18 yr (36,957 d) |
Aphelion | 2.8390 AU |
Perihelion | 2.1072 AU |
2.4731 AU | |
Eccentricity | 0.1480 |
3.89 yr (1,421 d) | |
357.41° | |
0° 15m 12.24s / day | |
Inclination | 13.415° |
85.551° | |
23.523° | |
Physical characteristics | |
Mean diameter | |
14.572±0.005 h [10] [lower-alpha 1] | |
Pole ecliptic latitude | |
10.8 [1] [4] | |
908 Buda (prov. designation: A918 WDor1918 EX) is a background asteroid from the inner regions of the asteroid belt, approximately 30 kilometers (19 miles) in diameter. It was discovered by German astronomer Max Wolf at the Heidelberg Observatory on 30 November 1918. [1] The uncommon L-type asteroid has a rotation period of 14.6 hours. It was named after Buda, the smaller part of the Hungarian city of Budapest. [3]
Buda is a non-family asteroid of the main belt's background population when applying the hierarchical clustering method to its proper orbital elements. [5] [6] It orbits the Sun in the inner asteroid belt at a distance of 2.1–2.8 AU once every 3 years and 11 months (1,421 days; semi-major axis of 2.47 AU). Its orbit has an eccentricity of 0.15 and an inclination of 13° with respect to the ecliptic. [4] The body's observation arc begins at Heidelberg Observatory with its official discovery observation on 30 November 1918. [1]
This minor planet was named after Buda, the smaller part of the Hungarian capital city of Budapest (the larger part being Pest). It is located on the west bank of the Danube River. The asteroid's naming citation was mentioned in The Names of the Minor Planets by Paul Herget in 1955 ( H 88 ). [3]
In the Bus–Binzel SMASS classification, Buda is an uncommon L-type, [4] while in the Bus–DeMeo taxonomy, it is a D-type asteroid. [6] [11]
In March 2009, a rotational lightcurve of Buda was obtained from photometric observations by Brian Warner at his Palmer Divide Observatory ( 716 ) in Colorado. Analysis gave a classically shaped bimodal lightcurve with a rotation period of 14.572±0.005 hours and a brightness variation of 0.29±0.02 magnitude ( U=3 ). [10] [lower-alpha 1] This supersedes a period determination by French amateur astronomer Laurent Bernasconi from January 2005, who determined a period of 14.575±0.003 hours with an amplitude of 0.41±0.03 magnitude ( U=2+ ). [12] Observations by Julian Oey in 2015 gave two similar periods ( U=2/2 ). [13]
In 2016, a modeled lightcurve using photometric data from various sources of an international collaboration of astronomers, rendered a concurring sidereal period of 14.57498±0.00005 and two spin axes of (40.0°, 5.0°) and (225.0°, 16.0°) in ecliptic coordinates (λ, β). [14]
According to the survey carried out by the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite, and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer (WISE), Buda measures (24.37±1.1), (28.29±0.61) and (30.749±0.492) kilometers in diameter and its surface has an albedo of (0.1576±0.015), (0.118±0.006) and (0.087±0.007), respectively. [7] [8] [9] The Collaborative Asteroid Lightcurve Link derives an albedo of 0.1509 and calculates a diameter of 24.33 kilometers based on an absolute magnitude of 10.74. [15] Alternative mean-diameter measurements published by the WISE team include (29.73±8.24 km) and (36.268±8.535 km) with corresponding albedos of (0.10±0.06) and (0.0859±0.0453). [6] [15]
888 Parysatis is a stony background asteroid, approximately 44 kilometers in diameter, that is located in the central region of the asteroid belt. It was discovered by German astronomer Max Wolf at the Heidelberg Observatory on 2 February 1918. The S-type asteroid has a rotation period of 5.9 hours. It was named after the Persian Queen Parysatis from the Achaemenid Empire of the 5th century BC.
889 Erynia is a highly elongated background asteroid from the inner regions of the asteroid belt. It was discovered on 5 March 1918, by German astronomer Max Wolf at the Heidelberg-Königstuhl State Observatory, and given the provisional designations A918 EN and 1918 DG. The stony S-type asteroid (Sl) has a rotation period of 9.89 hours and measures approximately 17 kilometers in diameter. It was named from Greek mythology, after the Erinyes, also known as Furies.
891 Gunhild is a large background asteroid from the outer regions of the asteroid belt, that measures approximately 58 kilometers in diameter. It was discovered on 17 May 1918, by astronomer Max Wolf at the Heidelberg-Königstuhl State Observatory in southwest Germany. The dark D-type asteroid has a rotation period of 11.9 hours. Any reference of the asteroid's name to a person is unknown.
896 Sphinx is a background asteroid from the inner regions of the asteroid belt, that measures approximately 13 kilometers in diameter. It was discovered on 1 August 1918, by astronomer Max Wolf at the Heidelberg-Königstuhl State Observatory in southwest Germany. The asteroid has a rotation period of 21.0 hours and is one of few low-numbered objects for which no spectral type has been determined. It was named after the Sphinx, a creature from Greek and Egyptian mythology.
898 Hildegard is a bright background asteroid, approximately 12 kilometers in diameter, that is located in the central regions of the asteroid belt. It was discovered by German astronomer Max Wolf at the Heidelberg-Königstuhl State Observatory on 3 August 1918 and given the provisional designations A918 PG and 1918 EA. The stony S-type asteroid (Sl) has a rotation period of 24.9 hours and a relatively high orbital eccentricity of 0.37. It was probably named after Saint Hildegard of Bingen (1098–1179).
900 Rosalinde is an elongated background asteroid from the inner regions of the asteroid belt, that has a mean-diameter of approximately 19 kilometers. It was discovered on 10 August 1918, by astronomer Max Wolf at the Heidelberg-Königstuhl State Observatory in southwest Germany. The lengthy S/D-type asteroid has a rotation period of 16.6 hours. It was likely named after "Rosalinde", a character in the operetta Die Fledermaus by Johann Strauss II.
904 Rockefellia is a dark and large background asteroid from the outer regions of the asteroid belt, that measures approximately 59 kilometers in diameter. It was discovered on 29 October 1918, by German astronomer Max Wolf at the Heidelberg-Königstuhl State Observatory. The carbonaceous C-type asteroid (Ch) has a rotation period of 6.8 hours and is rather spherical in shape. It was named after American philanthropist and oil industrialist John D. Rockefeller (1839–1937).
907 Rhoda is a large background asteroid from the central region of the asteroid belt, that measures approximately 75 kilometers in diameter. It was discovered on 12 November 1918, by astronomer Max Wolf at the Heidelberg Observatory in southwest Germany. The dark C/X-type asteroid has a long rotation period of 22.4 hours and is likely spherical in shape. It was named after Rhoda Barnard, wife of American astronomer Edward Emerson Barnard (1857–1923).
2023 Asaph, provisional designation 1952 SA, is a dark asteroid from the outer regions of the asteroid belt, approximately 21 kilometers in diameter. It was discovered on 16 September 1952, by astronomers of the Indiana Asteroid Program at Goethe Link Observatory in Indiana, United States.
1069 Planckia, provisional designation 1927 BC, is a background asteroid from the outer regions of the asteroid belt, approximately 39 kilometers in diameter. It was discovered on 28 January 1927, by astronomer Max Wolf at the Heidelberg-Königstuhl State Observatory in Germany. The asteroid was named after German physicist Max Planck.
1137 Raïssa is a stony background asteroid and slow rotator, approximately 22 kilometers in diameter, located in the inner regions of the asteroid belt. It was discovered by Grigory Neujmin at Simeiz Observatory in 1929, and named in memory of Raïssa Maseeva, who worked at the Pulkovo Observatory.
1240 Centenaria, provisional designation 1932 CD, is a background asteroid from the outer regions of the asteroid belt, approximately 60 kilometers in diameter. It was discovered on 5 February 1932, by astronomer Richard Schorr at the Bergedorf Observatory in Hamburg, Germany. The assumed C-type asteroid has a rotation period of 11.3 hours. It was named for the 100th anniversary of the discovering observatory.
1295 Deflotte, provisional designation 1933 WD, is a carbonaceous asteroid from the outer regions of the asteroid belt, approximately 48 kilometers in diameter. It was discovered on 25 November 1933, by French astronomer Louis Boyer at the Algiers Observatory in Algeria, North Africa. The asteroid was named after the discoverer's nephew.
1555 Dejan, provisional designation 1941 SA, is an asteroid from the background population of the central regions of the asteroid belt, approximately 22 kilometers in diameter. It was discovered on 15 September 1941, by Belgian astronomer Fernand Rigaux at the Royal Observatory of Belgium in Uccle. The asteroid was named after Dejan Đurković, son of Serbian astronomer Petar Đurković.
1274 Delportia, provisional designation 1932 WC, is a stony Florian asteroid from the inner regions of the asteroid belt, approximately 10 kilometers in diameter. It was discovered on 28 November 1932, by Belgian astronomer Eugène Delporte at Uccle Observatory in Belgium. It was named after the discoverer himself.
1806 Derice, provisional designation 1971 LC, is a stony Flora asteroid from the inner regions of the asteroid belt, approximately 10 kilometers in diameter. Discovered on 13 June 1971, at the Bickley site of the Perth Observatory in Western Australia, it was the first discovery of a minor planet ever made in Oceania. The asteroid was named after the wife of Dennis Harwood, staff member at Bickley.
1936 Lugano, provisional designation 1973 WD, is a carbonaceous Adeonian asteroid from the middle region of the asteroid belt, approximately 26 kilometers in diameter.
1424 Sundmania is a large asteroid and rather slow rotator from the background population of the outer regions of the asteroid belt. It was discovered on 9 January 1937, by astronomer Yrjö Väisälä at the Turku Observatory in southwest Finland. The dark X-type asteroid has a notably long rotation period of 93.7 hours and measures approximately 70 kilometers in diameter. It was named after Finnish astronomer and mathematician Karl F. Sundman.
2478 Tokai, provisionally designated 1981 JC, is a stony Florian asteroid and binary system from the inner regions of the asteroid belt, approximately 10 kilometers in diameter. It was discovered on 4 May 1981, by Japanese astronomer Toshimasa Furuta at Tōkai Observatory, Japan. The asteroid was named after the city of Tōkai.
3628 Božněmcová, provisional designation 1979 WD, is a rare-type asteroid from the middle region of the asteroid belt, approximately 7 kilometers in diameter. It was discovered on 25 November 1979, by Czech astronomer Zdeňka Vávrová at Kleť Observatory in the Czech Republic. It is named for Czech writer Božena Němcová.