_Buda.png) Modelled shape ofBuda from itslightcurve | |
| 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 ofBudapest[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 | 101.18yr (36,957 d) |
| Aphelion | 2.8390AU |
| 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 | |
| 14.572±0.005 h[10][a] | |
| 10.8[1][4] | |
908 Buda (prov. designation:A918 WDor1918 EX) is abackground asteroid from the inner regions of theasteroid belt, approximately 30 kilometers (19 miles) in diameter. It was discovered by German astronomerMax Wolf at theHeidelberg Observatory on 30 November 1918.[1] The uncommonL-type asteroid has arotation period of 14.6 hours. It was named afterBuda, the smaller part of the Hungarian city ofBudapest.[3]
Buda is a non-family asteroid of the main belt'sbackground population when applying thehierarchical clustering method to itsproper orbital elements.[5][6] It orbits the Sun in theinner 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 aneccentricity of 0.15 and aninclination of 13° with respect to theecliptic.[4] The body'sobservation arc begins atHeidelberg Observatory with its official discovery observation on 30 November 1918.[1]
Thisminor planet was named afterBuda, the smaller part of the Hungarian capital city ofBudapest (the larger part beingPest). It is located on the west bank of theDanube River. The asteroid'snaming citation was mentioned inThe Names of the Minor Planets byPaul Herget in 1955 (H 88).[3]
In the Bus–BinzelSMASS classification,Buda is an uncommonL-type,[4] while in the Bus–DeMeo taxonomy, it is aD-type asteroid.[6][11]
In March 2009, a rotationallightcurve ofBuda was obtained fromphotometric observations byBrian Warner at hisPalmer Divide Observatory (716) in Colorado. Analysis gave a classically shaped bimodal lightcurve with arotation period of14.572±0.005 hours and a brightness variation of0.29±0.02magnitude (U=3).[10][a] This supersedes a period determination by French amateur astronomerLaurent Bernasconi from January 2005, who determined a period of14.575±0.003 hours with an amplitude of0.41±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 of14.57498±0.00005 and twospin axes of (40.0°, 5.0°) and (225.0°, 16.0°) inecliptic coordinates (λ, β).[14]
According to the survey carried out by the Infrared Astronomical SatelliteIRAS, the JapaneseAkari satellite, and theNEOWISE mission of NASA'sWide-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 analbedo of (0.1576±0.015), (0.118±0.006) and (0.087±0.007), respectively.[7][8][9] TheCollaborative Asteroid Lightcurve Link derives an albedo of 0.1509 and calculates a diameter of 24.33 kilometers based on anabsolute 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]
