690 Wratislavia

690 Wratislavia
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
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
 67.325±1.9 km[1]
73.105 ± 5.51 km[2]
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.

    Wratislavia has been studied by radar.[3]

    References

    1. 1 2 3 4 "JPL Small-Body Database Browser: 690 Wratislavia (1909 HZ)" (2005-03-11 last obs). Retrieved 7 May 2016.
    2. 1 2 3 Carry, B. (December 2012), "Density of asteroids", Planetary and Space Science, 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 2011-10-30.


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