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Table 7
Spectral reflectivity gradient (reddening) of cometary comae and nuclei.
| COMETARY COMAE | |||
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| Comet | Spectral range [nm] | Reddeninga [% / kÅ] | Reference |
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| 32P/Comas Solá | 525–590 | 2.54 ± 0.57 | this paper |
| 525–775 | 1.54 ± 0.49 | this paper | |
| 56P/Slaughter-Burnham | 525–590 | 2.46 ± 0.80 | this paper |
| 78P/Gehrels 2 | 525–590 | 1.88 ± 0.75 | this paper |
| 525–775 | 0.72 ± 1.45 | this paper | |
| 43P/Wolf-Harrington | 544–641 | 0.34* | Lowry & Fitzsimmons (2005) |
| 46P/Wirtanen | 540–670 | 8.3 | Lamy et al. (1998) |
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| COMETARY NUCLEI | |||
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| 143P/Kushida-Muramatsu | 544–641 | 3.75* | Lowry & Fitzsimmons (2005) |
| 133P/Elst-Pizarro | 544–641 | − 1.29* | Lowry & Fitzsimmons (2005) |
| 1P/Halley | visual range | 6 ± 3 | Thomas & Keller (1989) |
| 10P/Tempel 2 | visual range | 20 ± 3 | Jewitt & Luu (1989) |
| 49P/Arend-Rigaux | visual range | − 2.1 | Fitzsimmons et al. (1994) |
| 82P/Gehrels 3 | visual range | 13.3 ± 0.1 | De Sanctis et al. (2000) |
| 28P/Neujimin 1 | visual range | 10.3 ± 3.0 | Campins et al. (2007) |
| 162P/Siding Spring | visual range | 9.2 ± 1.0 | Campins et al. (2007) |
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