Infrared lightcurves of asteroids 532 Herculina and 45 Eugenia: Proof of the absence of significant albedo markings

Larry A. Lebofsky, Richard Greenberg, Edward F. Tedesco, Glenn J. Veeder

Research output: Contribution to journalArticle

11 Scopus citations

Abstract

Time-resolved near-infrared (J and K bands) and mid-infrared (N and Q bands) photometric measurements of asteroids 532 Herculina and 45 Eugenia show reflected and thermal lightcurves that are in phase: i.e., thermal maxima and minima occur at nearly the same time as the maxima and minima in reflected light. Model lightcurves for Herculina based on the albedo distribution of Taylor et al. (1987, Icarus 69, 354-369) are predicted to be 90° out of phase. A comparison of the model and observed lightcurves leads us to conclude that the light variations of Herculina and Eugenia are due primarily to shape rather than to surface albedo variations.

Original languageEnglish (US)
Pages (from-to)518-526
Number of pages9
JournalIcarus
Volume75
Issue number3
DOIs
StatePublished - Sep 1988

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

Fingerprint Dive into the research topics of 'Infrared lightcurves of asteroids 532 Herculina and 45 Eugenia: Proof of the absence of significant albedo markings'. Together they form a unique fingerprint.

  • Cite this