445 Edna

Edna (minor planet designation: 445 Edna) is a large Main belt asteroid.

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

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

    References

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


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