| Abstract: | The Deep Space 1 encounter with comet 19/P Borrelly offered the first close-up view of a comet unobscured by dust. The geometric albedo of the comet is 0.029??0.006 (with a size of 8.0 ?? 3.15 km), comparable to the low-albedo hemisphere of Iapetus, the lowest albedo C-type asteroids, and the Uranian rings. Albedo variegations on the body are substantial, far greater than on the handful of asteroids so far scrutinized by spacecraft. The Bond albedo of Borrelly is 0.009 ?? 0.002, the lowest of any object in the Solar System. The physical photometric parameters of the comet are similar to asteroids, but the optically active portion of its regolith may be fluffier. Differences in macroscopic roughness exist on its surface: the older regions appear to be slightly less rough, as if low-lying regions are infilled with native dust. Regional differences in the single particle phase function exist, with small regions exhibiting almost isotropic functions. |
| Genre: | Conference Paper |
| ProdID: | 70024562 |
| Citation Author: | Buratti, B.; Hicks, M.; Soderblom, L.; Britt, D.; Boice, D.; Brown, R.; Nelson, R.; Oberst, J.; Owen, T.; Sandel, B.; Stern, S. A.; Thomas, N.; Yelle, R. |
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| Citation End Page: | 547 |
| Citation Issue: | 500 |
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| Citation Language: | English |
| Citation Larger Work Title: | European Space Agency, (Special Publication) ESA SP |
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| Citation Number Of Pages: | 3 |
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| Citation Search Results Text: | The nucleus of 19/P Borrelly as revealed by deep space 1; 2002; Conference Paper; European Space Agency, (Special Publication) ESA SP; Buratti, B.; Hicks, M.; Soderblom, L.; Britt, D.; Boice, D.; Brown, R.; Nelson, R.; Oberst, J.; Owen, T.; Sandel, B.; Stern, S. A.; Thomas, N.; Yelle, R. |
| Citation Start Page: | 545 |
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| Citation Year: | 2002 |
| Type: | citation/reference |
| Text: | The nucleus of 19/P Borrelly as revealed by deep space 1; 2002; Conference Paper; European Space Agency, (Special Publication) ESA SP; Buratti, B.; Hicks, M.; Soderblom, L.; Britt, D.; Boice, D.; Brown, R.; Nelson, R.; Oberst, J.; Owen, T.; Sandel, B.; Stern, S. A.; Thomas, N.; Yelle, R. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Tue, 1 Jan 2002 00:00 -0600 |
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