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]
![]() A three-dimensional model of 690 Wratislavia based on its light curve | |
Discovery | |
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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[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) |
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° |
Argument of perihelion | 114.819° |
Physical characteristics | |
Mean radius | |
Mass | (1.28±0.03)×1019 kg[2] |
Mean density | 7.81±1.77 g/cm3[2] |
Synodic rotation period | 8.64 h (0.360 d) |
Geometric albedo | 0.0604±0.004 |
Absolute magnitude (H) | 8.02 |
Wratislavia has been studied by radar.[3]
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Minor planets |
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