Discovery[1][2] | |
---|---|
Discovered by | Spacewatch |
Discovery site | Kitt Peak Obs. |
Discovery date | 17 February 1993 |
Designations | |
1993 DA | |
Aten · NEO[1] | |
Orbital characteristics[1] | |
Epoch 4 September 2017 (JD 2458000.5) | |
Uncertainty parameter 6 | |
Observation arc | (5 days) |
Aphelion | 1.0231 AU |
Perihelion | 0.8491 AU |
0.9361 AU | |
Eccentricity | 0.0929 |
0.91 yr (331 days) | |
228.74° | |
1° 5m 17.52s / day | |
Inclination | 12.385° |
329.05° | |
354.06° | |
Earth MOID | 0.0355 AU · 13.8 LD |
Physical characteristics | |
Dimensions | 13–30 m[3] |
26.4[1] | |
1993 DA is a sub-kilometer asteroid, classified as a near-Earth object of the Aten group. It has only been observed during 5 days in February 1993, and not been detected ever since. The small body measures approximately 20 meters in diameter based on an absolute magnitude of 26.4, and has an Earth minimum orbital intersection distance of 13.8 lunar distances or 0.0355 AU (5,310,000 km).[1][2]