 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 |
| 3.45 yr (1260.5 d) | |
Average orbital 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 sizeable Main belt asteroid. It is a C-type asteroid, meaning it is primitive in composition and dark in colour. This asteroid was discovered by Johann Palisa on October 17, 1879, in Pola and was named after Hedwig Winnecke (née Dell), wife of astronomer Friedrich A. T. Winnecke.[3]
Attempts to determine the rotation period for this asteroid have led to conflicting results. A study published in 2010 using photometric observations from Organ Mesa Observatory showed a rotation period of 19.489 ± 0.002 hours and a brightness variation of 0.18 ± 0.02 in magnitude.[2]
- ^ a b "207 Hedda". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 12 May 2016.
- ^ a b Cite error: The named reference
mpb37_1_21was invoked but never defined (see the help page). - ^ Schmadel, L. (2003:31). Dictionary of minor planet names. Germany: Springer.