Discovery | |
---|---|
Discovered by | E. F. Coddington |
Discovery date | 2 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 arc | 116.53 yr (42563 d) |
Aphelion | 3.82552 AU (572.290 Gm) |
Perihelion | 2.57569 AU (385.318 Gm) |
3.20060 AU (478.803 Gm) | |
Eccentricity | 0.19525 |
5.73 yr (2091.4 d) | |
190.102 ° | |
0° 10m 19.668s / day | |
Inclination | 21.2944° |
292.111° | |
81.2763° | |
Physical characteristics | |
Dimensions | 87.17±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 | |
Edna ( minor planet designation: 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.
Discovery | |
---|---|
Discovered by | E. F. Coddington |
Discovery date | 2 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 arc | 116.53 yr (42563 d) |
Aphelion | 3.82552 AU (572.290 Gm) |
Perihelion | 2.57569 AU (385.318 Gm) |
3.20060 AU (478.803 Gm) | |
Eccentricity | 0.19525 |
5.73 yr (2091.4 d) | |
190.102 ° | |
0° 10m 19.668s / day | |
Inclination | 21.2944° |
292.111° | |
81.2763° | |
Physical characteristics | |
Dimensions | 87.17±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 | |
Edna ( minor planet designation: 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.