2348 Michkovitch
| Discovery | |
|---|---|
| Discovered by | M. B. Protić |
| Discovery site | Belgrade Obs. |
| Discovery date | 10 January 1939 |
| Designations | |
| MPC designation | 2348 Michkovitch |
|
Named after
|
Vojislav Mišković (astronomer) |
| 1939 AA · 1958 GR 1965 DA · 1975 XA5 1978 QH1 |
|
| main-belt · Erigone | |
| Orbital characteristics | |
| Epoch 16 February 2017 (JD 2457800.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 77.79 yr (28,413 days) |
| Aphelion | 2.8075 AU |
| Perihelion | 1.9862 AU |
| 2.3968 AU | |
| Eccentricity | 0.1713 |
| 3.71 yr (1,355 days) | |
| 7.1015° | |
| 0° 15m 56.16s / day | |
| Inclination | 4.6718° |
| 186.37° | |
| 295.69° | |
| Physical characteristics | |
| Dimensions |
4.595±0.098 4.802±0.078 km 15.33 km (calculated) |
| 28 h | |
| 0.057 (assumed) 0.8441±0.1248 0.917±0.151 |
|
| C | |
| 12.4 · 12.8 · 13.07±0.31 | |
2348 Michkovitch, provisional designation 1939 AA, is a presumed carbonaceous Erigone asteroid from the inner regions of the asteroid belt, calculated to measure approximately 15 kilometers in diameter. It was discovered by Serbian astronomer Milorad Protić at Belgrade Observatory on 10 January 1939.
The asteroid is a member of the Erigone family, named after 163 Erigone, its largest member and namesake. It is a rather young cluster (170–280 My) of dark C-type bodies in the inner main belt, which otherwise consists mostly of stony asteroids. It orbits the Sun at a distance of 2.0–2.8 AU once every 3 years and 9 months (1,355 days). Its orbit has an eccentricity of 0.17 and an inclination of 5° with respect to the ecliptic. No precoveries were taken. The asteroid's observation arc starts 15 days after its official discovery with the first used observation taken at the Royal Observatory of Belgium.
A 2011-published rotational light-curve for this asteroid obtained from photometric observations by Australian amateur astronomer David Higgins gave a longer-than average rotation period of 28 hours with a brightness variation of 0.12 in magnitude (U=2).
According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, the asteroid measures 4.6 and 4.8 kilometers in diameter and its surface has an outstanding albedo of 0.84 and 0.92, respectively. The Collaborative Asteroid Lightcurve Link strongly disagrees with the result obtained by the space-based observatory and assumes a standard albedo for carbonaceous asteroids of 0.057 and calculates a much larger diameter of 15.4 kilometers, as the lower the body's albedo (reflectivity), the larger its diameter at a constant absolute magnitude (brightness).
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