Program: GN-2008B-DD-5
Title: | Re-observation of asteroid 77828 |
PI: | Thais Mothe Diniz |
Co-I(s): | David Nesvorny |
Abstract
In reducting the data of a previous observational cycle with the Gemini telescopes we noticed a very unfamiliar spectrum, different from the any main belt asteroid observed in that program. This object, asteroid (77828) 2001 QL215, shows an extremely red spectral slope (30%/10 ^3Angstroms), more than twice steeper than any of thousands of main-belt (and near-Earth) asteroids for which the spectral measurements were cataloged to date. The best Solar System analog to our spectrum of 2001 QL215 is in fact a sub-class of Kuiper belt objects (KBOs) whose spectral characteristics are thought to be heavily influenced by complex organics. Our previous observations of (77828) could have produced a spuriously red spectrum of the object for a number of reasons, such as a problem with the solar analog stars, air
mass, guiding, data reduction, etc. In this proposal, we ask for 2 additional hours in the directors Time for re-observing this object, so that we can be able to confirm its spectral behavior.