.png.webp) 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 | |
| (690) Wratislavia | |
| Pronunciation | /vrætɪˈslɑːviə/ |
Named after | Wrocław |
| 1909 HZ | |
| Orbital characteristics[1] | |
| 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) |
| 3.1450 AU (470.49 Gm) | |
| Eccentricity | 0.18166 |
| 5.58 yr (2037.2 d) | |
| 53.487° | |
| 0° 10m 36.192s / day | |
| Inclination | 11.266° |
| 253.160° | |
| 114.819° | |
| Physical characteristics | |
Mean radius | |
| Mass | (1.28±0.03)×1019 kg[2] |
Mean density | 7.81±1.77 g/cm3[2] |
| 8.64 h (0.360 d) | |
| 0.0604±0.004 | |
| 8.02 | |
690 Wratislavia is a minor planet orbiting the Sun. Wratislavia was discovered on October 16, 1909.[1] IRAS data shows it is about 135 km in diameter.[1]
Asteroid 690 Wratislavia (apparent magnitude 12.9) near the galaxy NGC 6941.
References
- 1 2 3 4 "JPL Small-Body Database Browser: 690 Wratislavia (1909 HZ)" (2005-03-11 last obs). Retrieved 7 May 2016.
- 1 2 3 Carry, B. (December 2012), "Density of asteroids", Planetary and Space Science, vol. 73, pp. 98–118, arXiv:1203.4336, Bibcode:2012P&SS...73...98C, doi:10.1016/j.pss.2012.03.009. See Table 1.
- ↑ "Radar-Detected Asteroids and Comets". NASA/JPL Asteroid Radar Research. Retrieved 30 October 2011.
External links
- Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center
- Rotational Period Determination of 690 Wratislavia
- 690 Wratislavia at AstDyS-2, Asteroids—Dynamic Site
- 690 Wratislavia at the JPL Small-Body Database
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