|
|||||
|
|
Determining a tilt in Titan’s north-south albedo asymmetry from Cassini images |
|
| Authors: | Michael T Roman Robert A West Peter J Gierasch Conor A Nixon |
| Institution: | a Department of Astronomy, Cornell University, Ithaca, NY 14853, USA b MS 169-237, Jet Propulsion Laboratory, 4800 Oak Grove Drive, Pasadena, CA 91109, USA c Department of Astronomy, University of Maryland, College Park, MD 20742, USA |
| Abstract: | Analysis of Titan’s hemispheric brightness asymmetry from mapped Cassini images reveals an axis of symmetry that is tilted with respect to the rotational axis of the solid body. Twenty images taken from 2004 through 2007 show a mean axial offset of 3.8 ± 0.9° relative to the solid body’s pole, directed 79 ± 24° to the west of the sub-solar longitude. These values are consistent with recent measurements of an implied atmospheric spin axis determined from isothermal mapping by Achterberg, R.K., Conrath, B.J., Gierasch, P.J., Flasar, F.M., Nixon, C.A., 2008. Icarus 197, 549-555]. |
| Keywords: | Titan Atmospheres dynamics Atmospheres structure |
| 本文献已被 ScienceDirect 等数据库收录！ | |