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Spectral energy distributions (SEDs) from 0.4 to 4.7 microns are presentedfor the two principal stellar components of HD~98800, A and B. The third majorcomponent, an extensive planetary debris system (PDS), emits > 20% of theluminosity of star B in a blackbody SED at 164 +/- 5K extending from mid-IR tomillimeter-wavelengths. At 0.95 microns a preliminary upper limit of < 0.06 isobtained for the ratio of reflected light to the total from star B. This resultlimits the albedo of the PDS to < 0.3. Values are presented for thetemperature, luminosity, and radius of each major systemic component.Remarkable similarities are found between the PDS and the interplanetary debrissystem around the Sun as it could have appeared a few million years after itsformation.Comment: LaTeX, 9 pages with 1 encapsulated postscript figure and one  specially formatted Table which is rendered as a postscript file and included  as a figure. Accepted for publication in Astrophysical Journal Letter

NICMOS Observations of the Pre–Main-Sequence Planetary Debris System HD 98800