 Orbital diagram | |
| Discovery[1] | |
|---|---|
| Discovered by | E. Delporte |
| Discovery site | Uccle Obs. |
| Discovery date | 28 November 1932 |
| Designations | |
| (1274) Delportia | |
Named after | Eugène Delporte (Belgian astronomer)[2] |
| 1932 WC · 1926 AA 1928 RX · 1934 JD A918 RA | |
| main-belt · Flora[3] | |
| Orbital characteristics[1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 98.84 yr (36,101 days) |
| Aphelion | 2.4813AU |
| Perihelion | 1.9772 AU |
| 2.2292 AU | |
| Eccentricity | 0.1131 |
| 3.33yr (1,216 days) | |
| 33.180° | |
| 0° 17m 45.96s / day | |
| Inclination | 4.3970° |
| 327.09° | |
| 244.65° | |
| Physical characteristics | |
| Dimensions | 9.611±0.121 km[4] 10.384±0.048 km[5] 12.85 km(calculated)[3] 12.95±0.22 km[6] |
| 5.5±0.07h[7] 5.615±0.001 h[a] 5.6204±0.0040 h[8] | |
| 0.20(assumed)[3] 0.200±0.008[6] 0.3104±0.0340[5] 0.461±0.057[4] | |
| Tholen =S[1] · S[3] B–V = 0.895[1] U–B = 0.525[1] | |
| 11.57±0.48[9] · 11.82[1][3][5][6] · 11.940±0.001(R)[8] | |
1274 Delportia, provisional designation1932 WC, is a stony Florianasteroid from the inner regions of theasteroid belt, approximately 10 kilometers in diameter. It was discovered on 28 November 1932, by Belgian astronomerEugène Delporte atUccle Observatory in Belgium.[10] It was named after the discoverer himself.[2]
Delportia is a stonyS-type asteroid on theTholen taxonomic scheme. As a member of theFlora family, one of the largest families of the main belt, it orbits the Sun in theinner main-belt at a distance of 2.0–2.5 AU once every 3 years and 4 months (1,216 days). Its orbit has aneccentricity of 0.11 and aninclination of 4° with respect to theecliptic.[1] It was first identified asA918 RA atHeidelberg Observatory in 1918. The body'sobservation arc begins 6 years prior to its official discovery observation at Uccle, when it was identified as1926 AA at Heidelberg in 1926.[10]
A rotationallight curve ofDelportia was obtained by American astronomerEdwin E. Sheridan in March 2007. Light curve analysis gave a well-definedrotation period of 5.615 hours with a brightness variation of 0.05magnitude (U=3),[a] superseding a period of 5.5 hours with an amplitude of 0.09 magnitude obtained by French amateur astronomerRené Roy in December 2005 (U=2).[7] In February 2010, photometric observations at thePalomar Transient Factory gave a period of 5.6204 hours and an amplitude of 0.26 magnitude (U=2).[8]
According to the surveys carried out by NASA'sWide-field Infrared Survey Explorer with its subsequentNEOWISE mission, and the JapaneseAkari satellite,Delportia measures 9.61 and 12.95 kilometers in diameter, and its surface has analbedo of 0.46 and 0.20, respectively.[4][6] TheCollaborative Asteroid Lightcurve Link assumes a standard albedo for stony asteroids of 0.20 and calculates a diameter of 12.85 kilometers using anabsolute magnitude of 11.82.[3]
Based on a suggestion by Gustav Stracke, thisminor planet was named for its discoverer,Eugène Delporte (1882–1955), prolificdiscoverer of minor planets, astronomer and director at the discovering Uccle Observatory during 1936–1947. The lunar craterDelporte is also named in his honor. The official naming citation was first mentioned inThe Names of the Minor Planets byPaul Herget in 1955 (H 117).[2]
