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445 Edna

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445 Edna
Discovery
Discovered byE. F. Coddington
Discovery date2 October 1899
Designations
(445) Edna
Pronunciation/ˈɛdnə/[1]
1899 EX
Main belt
Orbital characteristics[2]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc116.53 yr (42563 d)
Aphelion3.82552 AU (572.290 Gm)
Perihelion2.57569 AU (385.318 Gm)
3.20060 AU (478.803 Gm)
Eccentricity0.19525
5.73 yr (2091.4 d)
190.102°
0° 10m 19.668s / day
Inclination21.2944°
292.111°
81.2763°
Physical characteristics
Dimensions87.17±2.1 km[2]
88.60 ± 4.10 km[3]
Mass(3.47 ± 0.78) × 1018 kg[3]
Mean density
9.52 ± 2.50 g/cm3[3]
19.97 h (0.832 d)
0.0447±0.002
9.29

445 Edna is a large Main belt asteroid.

It was discovered by E. F. Coddington on October 2, 1899, at Mount Hamilton, California. It was the astronomer's third and final asteroid discovery.

References

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  1. ^ Noah Webster (1884) A Practical Dictionary of the English Language
  2. ^ a b "445 Edna (1899 EX)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 10 May 2016.
  3. ^ a b c 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.
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