Table 2. Observational log of comet C/2009 P1 (Garradd). The 6-m telescope at the SAO.
From: Linear and circular polarization of comet C/2009 P1 (Garradd)
Date, UT 2012 | r AU | Δ AU | α deg | Filter/region Å | Exp s |
|---|---|---|---|---|---|
Feb 2.085 | 1.647 | 1.533 | 35.87 | 3800–8000 | 600 |
Feb 14.089 | 1.709 | 1.386 | 35.29 | 6840/90 | 720 |
Apr 21.833 | 2.228 | 1.963 | 26.81 | 6840/90 | 840 |