200 Dynamene
| Discovery | |
|---|---|
| Discovered by | C. H. F. Peters, 1879 |
| Designations | |
| Main belt | |
| Orbital characteristics[1] | |
| Aphelion | 3.102 AU |
| Perihelion | 2.376 AU |
| 2.739 AU | |
| Eccentricity | 0.133 |
| 4.53 years | |
| Inclination | 6.90° |
| Physical characteristics | |
| Dimensions | 130.71 ± 3.01[2] km |
| Mass | (1.07 ± 0.16) × 1019[2] kg |
Mean density | 9.14 ± 1.51[2] g/cm3 |
| 37.394[3] h | |
| Albedo | 0.053 |
Spectral type | C |
| 8.26 | |
|
| |
200 Dynamene is a large dark main-belt asteroid that was discovered by German-American astronomer Christian Heinrich Friedrich Peters on July 27, 1879, in Clinton, New York. The name derives from Dynamene, one of the fifty Nereids in Greek mythology. Based upon its spectrum, 200 Dynamene is classified as a C-type asteroid, indicating that it probably has a primitive composition similar to the carbonaceous chondrite meteorites.
Photometric observations of this asteroid at the Organ Mesa Observatory in Las Cruces, New Mexico in 2011 gave a light curve with a period of 37.394 ± 0.002 hours and a brightness variation of 0.10 ± 0.01 in magnitude. The curve is asymmetrical with four uneven minima and maxima.[3]
Occultation data from October 9, 2006 using 15 chords shows the asteroid is about 130 km in diameter.[4]
References
- ↑ "200 Dynamene", JPL Small-Body Database Browser (NASA Jet Propulsion Laboratory), retrieved 2013-03-30.
- 1 2 3 Carry, B. (December 2012), "Density of asteroids", Planetary and Space Science 73, pp. 98–118, arXiv:1203.4336, Bibcode:2012P&SS...73...98C, doi:10.1016/j.pss.2012.03.009. See Table 1.
- 1 2 Pilcher, Frederick (April 2012), "Rotation Period Determinations for 31 Euphrosyne, 65 Cybele, 154 Bertha 177 Irma, 200 Dynamene, 724 Hapag, 880 Herba, and 1470 Carla", Bulletin of the Minor Planets Section of the Association of Lunar and Planetary Observers 39 (2), pp. 57–60, Bibcode:2012MPBu...39...57P.
- ↑ "2006 Asteroid Occultation Reports for North America". IOTA (International Occultation Timing Association). Retrieved 2015-06-08. (chords)
External links
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