690 Wratislavia

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.
690 Wratislavia
A three-dimensional model of 690 Wratislavia based on its light curve
Discovery
Discovered byJoel Hastings Metcalf
Discovery siteTaunton, Massachusetts
Discovery date16 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 arc113.75 yr (41547 d)
Aphelion3.7163 AU (555.95 Gm)
Perihelion2.5737 AU (385.02 Gm)
3.1450 AU (470.49 Gm)
Eccentricity0.18166
5.58 yr (2037.2 d)
53.487°
0° 10m 36.192s / day
Inclination11.266°
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

    Wratislavia has been studied by radar.[3]

    References

    1. "JPL Small-Body Database Browser: 690 Wratislavia (1909 HZ)" (2005-03-11 last obs). Retrieved 7 May 2016.
    2. 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.
    3. "Radar-Detected Asteroids and Comets". NASA/JPL Asteroid Radar Research. Retrieved 30 October 2011.


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