690 Wratislavia

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690 Wratislavia
690Wratislavia (Lightcurve Inversion).png
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
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°
Earth MOID 1.59764 AU (239.004 Gm)
Jupiter MOID 1.91556 AU (286.564 Gm)
Jupiter Tisserand parameter 3.154
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[edit]

  1. ^ a b c d "JPL Small-Body Database Browser: 690 Wratislavia (1909 HZ)" (2005-03-11 last obs). Retrieved 7 May 2016. 
  2. ^ a b c Carry, B. (December 2012), "Density of asteroids", Planetary and Space Science, 73, pp. 98–118, arXiv:1203.4336free to read, 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. 

External links[edit]