21062 Iasky
| Discovery | |
|---|---|
| Discovered by | C. S. Shoemaker and E. M. Shoemaker |
| Discovery site | Palomar |
| Discovery date | 13 May 1991 |
| Designations | |
| 21062 | |
| 1991 JW1 | |
| Orbital characteristics[1] | |
| Epoch 13 January 2016 (JD 2457400.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 12169 days (33.32 yr) |
| Aphelion | 3.1485359 AU (471.01427 Gm) |
| Perihelion | 2.9393948 AU (439.72720 Gm) |
| 3.043965 AU (455.3707 Gm) | |
| Eccentricity | 0.0343534 |
| 5.31 yr (1939.8 d) | |
| 98.729489° | |
| 0° 11m 8.109s / day | |
| Inclination | 23.60013° |
| 149.30896° | |
| 217.24898° | |
| Earth MOID | 1.94309 AU (290.682 Gm) |
| Jupiter MOID | 2.05688 AU (307.705 Gm) |
| TJupiter | 3.110 |
| Physical characteristics | |
| 12.3 | |
21062 Iasky (1991 JW1) is a main-belt asteroid discovered on May 13, 1991 by C. S. Shoemaker and E. M. Shoemaker at Palomar.
In his 1994 book Pale Blue Dot, Astronomer Carl Sagan speculated on the nature of 1991JW, saying it "has an orbit very much like the Earth's and is even easier to get to than 4660 Nereus. But its orbit seems too similar to the Earth's for it to be a natural object. Perhaps it's some lost upper stage of the Saturn V Apollo moon rocket.[2]
References
- ^ "21062 Iasky (1991 JW1)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 12 April 2016.
- ^ Sagan, Carl (1994). Pale Blue Dot: A Vision of the Human Future in Space. New York: Random House. p. 247. ISBN 0-345-37659-5.
External links
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