_Gezelle.png) Shape model ofGezelle from itslightcurve | |
| Discovery[1] | |
|---|---|
| Discovered by | E. Delporte |
| Discovery site | Uccle Obs. |
| Discovery date | 29 January 1935 |
| Designations | |
| (1672) Gezelle | |
Named after | Guido Gezelle (poet and priest)[2] |
| 1935 BD · 1929 AA 1933 SE1 · 1939 VK 1950 SX · 1978 NA8 A924 EO | |
| main-belt · (outer)[3] | |
| Orbital characteristics[1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 83.62 yr (30,542 days) |
| Aphelion | 4.0486AU |
| Perihelion | 2.2952 AU |
| 3.1719 AU | |
| Eccentricity | 0.2764 |
| 5.65yr (2,063 days) | |
| 183.87° | |
| 0° 10m 28.2s / day | |
| Inclination | 1.0672° |
| 181.29° | |
| 255.12° | |
| Physical characteristics | |
| Dimensions | 26.205±0.202 km[4] 26.335±0.216 km[5] 26.56±1.86 km[6] 27.90 km(calculated)[3] |
| 40.6821±0.0001 h[7] 40.6824±0.0005 h[8] 40.72±0.01h[9] | |
| 0.055±0.004[5] 0.057(assumed)[3] 0.092±0.014[6] 0.0936±0.0162[4] | |
| C[3][10] | |
| 11.10[6] · 11.1[4] · 11.46±0.32[10] · 11.5[1][3] | |
1672 Gezelle, provisional designation1935 BD, is a carbonaceousasteroid from the outer region of theasteroid belt, approximately 27 kilometers in diameter. It was discovered on 29 January 1935, by Belgian astronomerEugène Delporte atRoyal Observatory of Belgium in Uccle, Belgium.[11] It was later named after Flemish poet and Roman Catholic priestGuido Gezelle.[2]
TheC-type asteroid orbits the Sun at a distance of 2.3–4.0 AU once every 5 years and 8 months (2,063 days). Its orbit has aneccentricity of 0.28 and aninclination of 1° with respect to theecliptic.[1]Gezelle's first identification asA924 EO atHeidelberg Observatory remained unused. Itsobservation arc begins 9 days after its official discovery observation.[11]
Astronomer James W. Brinsfield obtained a rotationallightcurve ofGezelle at the Via Capote Observatory (G69) in October 2008. It gave a well definedrotation period of 40.72 hours with a brightness variation of 0.56magnitude (U=3).[9] In 2016, similar periods of 40.6821 and 40.6824 hours were obtained from modeled photometric observations derived from the Lowell Photometric Database and other sources (U=n.a.).[7][8]
According to the surveys carried out by the JapaneseAkari satellite and NASA'sWide-field Infrared Survey Explorer with its subsequentNEOWISE mission,Gezelle measures between 26.21 and 26.56 kilometers in diameter and its surface has analbedo between 0.055 and 0.093.[4][5][6] TheCollaborative Asteroid Lightcurve Link assumes a standard albedo for carbonaceous asteroids of 0.057 and calculates a diameter of 27.90 kilometers based on an absolute magnitude of 11.5.[3]
Thisminor planet was named in memory of famous Flemish poet and Roman Catholic priestGuido Gezelle (1830–1899), who wrote extensively on religion and nature.[2] The official naming citation was published by theMinor Planet Center on 8 April 1982 (M.P.C. 6832).[12]
