Table 3
Observational results for the target comets.
| Comet | Integrated magnitudea | Colour indexb | |||
| V | R | I | (V − R) | (R − I) | |
|
|
|||||
| C/2005 L3 | – | 16.58 ± 0.02 | – | – | – |
| C/2005 S4 | 21.68 ± 0.02 | 21.26 ± 0.02 | – | 0.42 ± 0.03 | – |
| C/2007 JA21 | 21.59 ± 0.01 | 21.20 ± 0.02 | – | 0.39 ± 0.02 | – |
| C/2007 M1 | – | 19.72 ± 0.02 | – | – | – |
| C/2008 FK75 | 17.9 ± 0.1 | 17.39 ± 0.09 | 17.09 ± 0.12 | 0.51 ± 0.13 | 0.30 ± 0.15 |
| C/2009 S3 | 20.0 ± 0.1 | 19.51 ± 0.09 | 19.04 ± 0.12 | 0.49 ± 0.13 | 0.47 ± 0.15 |
| C/2010 R1 | 18.7 ± 0.1 | 18.23 ± 0.09 | 17.86 ± 0.11 | 0.44 ± 0.13 | 0.44 ± 0.15 |
| C/2011 L4 | – | 19.03 ± 0.09 | – | – | – |
|
|
|||||
| Solar | 0.354 | 0.332 | |||
Notes.
Integrated coma magnitude derived for all the filters in the reference optical aperture of ρ = 104 km, centred on the optocentre. The errors derive from the photometric calibration.
Colour indexes integrated in the reference optical aperture of ρ = 104 km, centred on the optocentre. The solar colours are those in the modern Johnson-Cousins system (Holmberg et al. 2006).
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