690 Wratislavia
690 Wratislavia is a minor planet orbiting the Sun. Wratislavia was discovered on October 16, 1909. IRAS data shows it is about 135 km in diameter.
A three-dimensional model of 690 Wratislavia based on its light curve | |
| Discovery | |
|---|---|
| Discovered by | Joel Hastings Metcalf |
| Discovery site | Taunton, Massachusetts |
| Discovery date | 16 October 1909 |
| Designations | |
MPC designation | (690) Wratislavia |
| Pronunciation | /vrætɪˈslɑːviə/ |
Named after | Wrocław |
Alternative designations | 1909 HZ |
| Orbital characteristics | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 113.75 yr (41547 d) |
| Aphelion | 3.7163 AU (555.95 Gm) |
| Perihelion | 2.5737 AU (385.02 Gm) |
Semi-major axis | 3.1450 AU (470.49 Gm) |
| Eccentricity | 0.18166 |
Orbital period (sidereal) | 5.58 yr (2037.2 d) |
Mean anomaly | 53.487° |
Mean motion | 0° 10m 36.192s / day |
| Inclination | 11.266° |
Longitude of ascending node | 253.160° |
| 114.819° | |
| Physical characteristics | |
Mean radius |
|
| Mass | (1.28±0.03)×1019 kg |
Mean density | 7.81±1.77 g/cm3 |
Synodic rotation period | 8.64 h (0.360 d) |
| 0.0604±0.004 | |
| 8.02 | |
Wratislavia has been studied by radar.
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