 Orbital diagram | |
| Discovery | |
|---|---|
| Discovered by | Johann Palisa |
| Discovery date | 17 October 1879 |
| Designations | |
| (207) Hedda | |
| Pronunciation | German:[ˈhɛdaː] |
Named after | Hedwig Winnecke |
| A879 UA,1932 CL1 1934 XJ, 1953 BF | |
| Main belt | |
| Orbital characteristics[1] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 133.61 yr (48801 d) |
| Aphelion | 2.3497 AU (351.51 Gm) |
| Perihelion | 2.2177 AU (331.76 Gm) |
| 2.2837 AU (341.64 Gm) | |
| Eccentricity | 0.028894 |
| 3.45yr (1260.5d) | |
Averageorbital speed | 19.71 km/s |
| 34.9926° | |
| 0° 17m 8.124s / day | |
| Inclination | 3.8036° |
| 29.212° | |
| 2023-Feb-21 | |
| 192.936° | |
| Physical characteristics | |
| Dimensions | 58.70±1.3 km |
| 30.098 h (1.2541 d)[1] 19.489 h[2] | |
| 0.0552±0.003 | |
| C | |
| 9.92 | |
207 Hedda is a sizeableMain beltasteroid. It is aC-type asteroid, meaning it is primitive in composition and dark in colour. This asteroid was discovered byJohann Palisa on October 17, 1879, inPola and was named after Hedwig Winnecke (née Dell), wife of astronomerFriedrich A. T. Winnecke.[3]
Attempts to determine the rotation period for this asteroid have led to conflicting results. A study published in 2010 usingphotometric observations from Organ Mesa Observatory showed arotation period of 19.489 ± 0.002 hours and a brightness variation of 0.18 ± 0.02 inmagnitude.[2]
_mathilde.jpg) | This article about a C-type asteroid native to theasteroid belt is astub. You can help Wikipedia byexpanding it. |
