1444 Pannonia
Carbonaceous background asteroid
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1444 Pannonia (prov. designation: 1938 AE) is a carbonaceous background asteroid from the outer region of the asteroid belt, approximately 29 kilometers (18 miles) in diameter. It was discovered on 6 January 1938, by Hungarian astronomer György Kulin at Konkoly Observatory in Budapest, Hungary.[17] It was named after the ancient province of the Roman Empire, Pannonia.[3]
_Pannonia.png)
Modelled shape of Pannonia from its lightcurve | |
| Discovery[1] | |
|---|---|
| Discovered by | G. Kulin |
| Discovery site | Konkoly Obs. |
| Discovery date | 6 January 1938 |
| Designations | |
| (1444) Pannonia | |
| Pronunciation | /pÉËnoÊniÉ/[2] |
Named after | Pannonia (ancient province)[3] |
| 1938 AE | |
| main-belt · (outer)[4] | |
| Orbital characteristics[1] | |
| Epoch 16 February 2017 (JD 2457800.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 78.23 yr (28,575 days) |
| Aphelion | 3.5915 AU |
| Perihelion | 2.7128 AU |
| 3.1521 AU | |
| Eccentricity | 0.1394 |
| 5.60 yr (2,044 days) | |
| 268.73° | |
| 0° 10m 33.96s / day | |
| Inclination | 17.761° |
| 303.33° | |
| 310.87° | |
| Physical characteristics | |
| 26.363±0.141 km[5][6] 27.14 km (derived)[4] 28±3 km[7] 28.3±2.8 km[8] 29.20±2.2 km[9] 30.48±0.53 km[10] 30.92±9.63 km[11] 31.49±9.20 km[12] | |
| 6.2±0.1 h[13] 6.205±0.003 h[13] 10.756±0.006 h[14] | |
| 0.04±0.02[11] 0.05±0.06[12] 0.0501 (derived)[4] 0.053±0.005[5][6] 0.07±0.01[7][8] 0.070±0.003[10] 0.4748±0.081[9] | |
| C[4] | |
| 9.10[9] · 11.10[10] · 11.18±0.62[15] · 11.30[7][8][12] · 11.4[1] · 11.7[4][5][16] · 11.73[11] | |
Orbit and classification
Pannonia is a non-family asteroid of the main belt's background population when applying the hierarchical clustering method to its proper orbital elements. It orbits the Sun at a distance of 2.7â3.6 AU once every 5 years and 7 months (2,044 days). Its orbit has an eccentricity of 0.14 and an inclination of 18° with respect to the ecliptic.[1] Pannonia's observation arc begins 3 weeks after its official discovery at Konkoly, as no precoveries were taken, and no prior identifications were made.[17]
Naming
This minor planet was named for Pannonia, an ancient province of the Roman Empire, which was partially located over the territory of the present-day western Hungary.[3] The official naming citation was published by the Minor Planet Center on 1 February 1980 (M.P.C. 5183).[18]
Physical characteristics
Rotation period
In April 2001, astronomer Colin Bembrick obtained the first rotational lightcurve of Pannonia at Tarana Observatory (431) in Australia. Lightcurve analysis gave a well-defined rotation period of 10.756 hours with a brightness amplitude of 0.16 magnitude (U=3).[14] In 2002 and 2004, photometric observations by French astronomers Laurent Bernasconi and Bernard Christophe Additional periods of 6.2 and 6.205 hours with an amplitude of 0.57 and 0.37, respectively (U=2-/2).[13]
Diameter and albedo
According to the surveys carried out by the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite, and NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Pannonia measures between 26.36 and 31.49 kilometers in diameter, and its surface has an albedo between 0.04 and 0.47.[5][8][9][10][11][12] The Collaborative Asteroid Lightcurve Link derives an albedo of 0.0501 and a diameter of 27.14 kilometers with an absolute magnitude of 11.7.[4]
