| Discovery[1] | |
|---|---|
| Discovered by | P. Wild |
| Discovery site | Zimmerwald Obs. |
| Discovery date | 7 September 1966 |
| Designations | |
| (1748) Mauderli | |
Named after | Sigmund Mauderli (Swiss astronomer)[2] |
| 1966 RA · 1927 SF 1934 ND1 · 1938 DL2 1943 TP · 1951 UH 1951 XD · A922 BC | |
| main-belt · Hilda[3][4] | |
| Orbital characteristics[1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 95.36 yr (34,830 days) |
| Aphelion | 4.8163AU |
| Perihelion | 3.0642 AU |
| 3.9403 AU | |
| Eccentricity | 0.2223 |
| 7.82yr (2,857 days) | |
| 223.85° | |
| 0° 7m 33.6s / day | |
| Inclination | 3.2937° |
| 125.95° | |
| 199.95° | |
| Jupiter MOID | 0.5342 AU |
| Physical characteristics | |
| Dimensions | 40.32 km(derived)[4] 44.908±0.345 km[5] 51.91±1.28 km[6] |
| 6.00 h[7] 6.001±0.001 h[a] | |
| 0.037±0.002[6] 0.048±0.013[5] 0.05±0.01[5] 0.057(assumed)[4] | |
| Tholen =D[1] · D[4][5][8] B–V = 0.710[1] U–B = 0.264[1] | |
| 10.58±0.26[8] · 10.65[1][6] · 10.70[4][7] | |
1748 Mauderli, provisional designation1966 RA, is a dark and very reddish Hildianasteroid from the outermost region of theasteroid belt, approximately 45 kilometers in diameter.
It was discovered on 7 September 1966, by astronomerPaul Wild atZimmerwald Observatory near Bern, Switzerland, and was later named after Swiss astronomerSigmund Mauderli.[2][3]
Mauderli is a member of theHilda family of asteroids which stay in a 3:2resonance with the gas giantJupiter. Among the Hilda family, it is one of its members with the highest amplitude oflibration relative to the stable periodic orbit.[9]
The asteroid orbits the Sun in theoutermost main-belt at a distance of 3.1–4.8 AU once every 7 years and 10 months (2,857 days). Its orbit has aneccentricity of 0.22 and aninclination of 3° with respect to theecliptic.[1]Mauderli was first identified asA922 BC atHeidelberg Observatory in 1922, extending the body'sobservation arc by 44 years prior to its official discovery observation.[3]
Mauderli a darkD-type asteroid in theTholen classification.[1] It is also the reddest among the known asteroids of thisspectral type.[10]
Three rotationallightcurves gave a concurringrotation period of 6.00 hours with a brightness variation between 0.10 and 0.12magnitude (U=n.a/3/2-).[7][11][a]
Based on the space-based surveys carried out by the JapaneseAkari satellite and NASA'sWide-field Infrared Survey Explorer with its subsequentNEOWISE missions,Mauderli measures 44.908 and 51.91 kilometers in diameter and has analbedo of 0.037 and 0.048, respectively.[5][6] TheCollaborative Asteroid Lightcurve Link assumes a standard albedo for carbonaceous asteroids of 0.057 and calculates a diameter of 40.32 kilometers with on anabsolute magnitude of 10.7.[4]
Thisminor planet was named by the discoverer in honor of Sigmund Mauderli (1876–1962), Swiss astronomer and director of the Astronomical Institute at theUniversity of Bern from 1921–1946. He devoted much of his time to orbit determination and perturbation computing of minor planets for theAstronomisches Rechen-Institut in Germany.[2] The officialnaming citation was published by theMinor Planet Center on 1 October 1969 (M.P.C. 2971).[12]
