449 Hamburga
Hamburga (minor planet designation: 449 Hamburga) is a carbonaceous asteroid from the background population of the intermediate asteroid belt, approximately 75 kilometers in diameter. It was discovered by German astronomers Max Wolf and Friedrich Schwassmann at Heidelberg Observatory on 31 October 1899, and later named after the city of Hamburg in Germany.
| Discovery | |
|---|---|
| Discovered by | M. F. Wolf A. Schwassmann |
| Discovery site | Heidelberg Obs. |
| Discovery date | 31 October 1899 |
| Designations | |
MPC designation | (449) Hamburga |
| Pronunciation | /hæmˈbɜːrɡə/ |
Named after | Hamburg (German city) |
Alternative designations | 1899 EU · 1947 OA 1948 TO · A901 EA |
Minor planet category | main-belt · (middle) background |
| Orbital characteristics | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 117.91 yr (43,066 days) |
| Aphelion | 2.9931 AU |
| Perihelion | 2.1097 AU |
Semi-major axis | 2.5514 AU |
| Eccentricity | 0.1731 |
Orbital period (sidereal) | 4.08 yr (1,489 days) |
Mean anomaly | 228.86° |
Mean motion | 0° 14m 30.48s / day |
| Inclination | 3.0847° |
Longitude of ascending node | 85.923° |
| 47.281° | |
| Physical characteristics | |
| Dimensions | 55.09±14.25 km 63.61±0.75 km 66.76 ± 4.82 km 77.90±22.29 km 80.83±17.91 km 85.59±1.9 km |
| Mass | (1.57±1.40)×1018 kg |
Synodic rotation period | 18.145±0.005 h 18.263±0.004 h |
| 0.03±0.02 0.033±0.009 0.0393±0.002 0.07±0.02 0.072±0.002 | |
| Tholen = C · C B–V = 0.701 U–B = 0.378 | |
| 9.43±0.01 · 9.47 · 9.79 · 9.79±0.07 · 9.80 | |
449 was a proposed target for the 1980s-1990s space probe mission proposal CRAF.
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