179 Klytaemnestra
Klytaemnestra (minor planet designation: 179 Klytaemnestra) is a stony Telramund asteroid from the outer regions of the asteroid belt, approximately 77 kilometers (48 miles) in diameter. It was discovered on 11 November 1877, by Canadian-American astronomer James Craig Watson at the old Ann Arbor Observatory in Michigan, United States. It was his last discovery three years before his death. The transitional S-type asteroid has a rotation period of 11.17 hours. It was named after Clytemnestra from Greek mythology.
3D convex shape model of 179 Klytaemnestra | |
| Discovery | |
|---|---|
| Discovered by | J. C. Watson |
| Discovery site | Ann Arbor Obs. |
| Discovery date | 11 November 1877 |
| Designations | |
MPC designation | (179) Klytaemnestra |
| Pronunciation | /klɪtɪmˈnɛstrə/ |
Named after | Clytemnestra (Greek mythology) |
Alternative designations | A877 VC |
Minor planet category | main-belt · (outer) Telramund |
| Orbital characteristics | |
| Epoch 23 March 2018 (JD 2458200.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 119.12 yr (43,507 d) |
| Aphelion | 3.3085 AU |
| Perihelion | 2.6356 AU |
Semi-major axis | 2.9720 AU |
| Eccentricity | 0.1132 |
Orbital period (sidereal) | 5.12 yr (1,871 d) |
Mean anomaly | 194.50° |
Mean motion | 0° 11m 32.64s / day |
| Inclination | 7.8163° |
Longitude of ascending node | 251.91° |
| 103.64° | |
| Physical characteristics | |
Mean diameter | 64.25±0.79 km 69.946±0.518 km 72.786±0.799 km 75.02±3.21 km 77.69±1.4 km 90.17±1.53 km |
| Mass | (2.49±1.19)×1017 kg |
Mean density | 1.12±0.55 g/cm3 |
Synodic rotation period | 11.13±0.02 h 11.173 h 11.17342±0.00005 h |
| 0.119±0.018 0.1609±0.006 0.1833±0.0578 0.198±0.011 0.245±0.007 | |
| Tholen = S SMASS = Sk B–V = 0.832 U–B = 0.408 | |
| 8.15 8.22 | |
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.