Radar Observations of Asteroid 1862 Apollo
โ Scribed by Steven J. Ostro; Keith D. Rosema; Donald B. Campbell; Irwin I. Shapiro
- Publisher
- Elsevier Science
- Year
- 2002
- Tongue
- English
- Weight
- 79 KB
- Volume
- 156
- Category
- Article
- ISSN
- 0019-1035
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โฆ Synopsis
Arecibo radar echo spectra show the Q-class asteroid 1862 Apollo to have an elongation within 10% of 1.27, a pole-on silhouette with an average dimension of about 1.7 km, and disc-integrated radar properties that are typical for radar-detected near-Earth asteroids.
๐ SIMILAR VOLUMES
The combination of Arecibo radar echoes and available vis/IR data indicates that 288 Glauke is an S-class object slightly smaller and less elongated than 243 Ida, with radar surface properties near the average for S asteroids in the main belt, in an extraordinarily slow (โผ50-d) rotation state.
We report Doppler-only (cw) radar observations of basaltic near-Earth asteroid 3908 Nyx obtained at Arecibo and Goldstone in September and October of 1988. The circular polarization ratio of 0.75 ยฑ 0.03 exceeds โผ90% of those reported among radar-detected near-Earth asteroids and it implies an extrem