Colors of Trans-Neptunian Objects

Details Colors of Trans-Neptunian Objects Colors of Trans-Neptunian Objects

Sep 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009dps....41.4712r&link_type=abstract

American Astronomical Society, DPS meeting #41, #47.12

Astronomy and Astrophysics

Astronomy

Scientific paper

We have examined a set of observations of 121 trans-Neptunian objects (TNOs) obtained from the Hubble Space Telescope (HST) with the objective of determining their magnitudes and colors. 71 were observed in the near-infrared spectrum with NICMOS filters F110W (J) and F160W (H). 78 were observe in the visible spectrum with WFPC2 filters F555W (V), F814W (I) and F675W (R). Of these 121 objects only 36 were observed in both data sets. While a wide range of colors were discovered in the visible we found that most of the objects in the near-infrared were red with J-H colors in the range 0.5 - 0.7. We found very few blue objects. In this poster we present the visible and/or near-infrared colors for all 121 objects. We compare the colors to the orbital parameters and classifications and look for any trends. We also present colors for the primary and secondary objects of known binary systems.

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