Publication

NEOSurvey 1: Initial Results from the Warm Spitzer Exploration Science Survey of Near-Earth Object Properties

Trilling, D. E., Mommert, M., Hora, J., Chesley, S., Emery, J., Fazio, G., Harris, A., Mueller, M. & Smith, H. 22-Nov-2016 In : The Astronomical Journal. 152, 6, 10 p., 172

Research output: Scientific - peer-reviewArticle

  • David E. Trilling
  • Michael Mommert
  • Joseph Hora
  • Steve Chesley
  • Joshua Emery
  • Giovanni Fazio
  • Alan Harris
  • Michael Mueller
  • Howard Smith
Near-Earth objects (NEOs) are small solar system bodies whose orbits bring them close to the Earth’s orbit. We are carrying out a Warm Spitzer Cycle 11 Exploration Science program entitled NEOSurvey—a fast and efficient flux-limited survey of 597 known NEOs in which we derive a diameter and albedo for each target. The vast majority of our targets are too faint to be observed by NEOWISE, though a small sample has been or will be observed by both observatories, which allows for a cross-check of our mutual results. Our primary goal is to create a large and uniform catalog of NEO properties. We present here the first results from this new program: fluxes and derived diameters and albedos for 80 NEOs, together with a description of the overall program and approach, including several updates to our thermal model. The largest source of error in our diameter and albedo solutions, which derive from our single-band thermal emission measurements, is uncertainty in η, the beaming parameter used in our thermal modeling; for albedos, improvements in solar system absolute magnitudes would also help significantly. All data and derived diameters and albedos from this entire program are being posted on a publicly accessible Web page at nearearthobjects.nau.edu.
Original languageEnglish
Article number172
Number of pages10
JournalThe Astronomical Journal
Volume152
Issue number6
StatePublished - 22-Nov-2016

    Keywords

  • catalogs, infrared: planetary systems, minor planets, asteroids: general, surveys, PERFORMANCE, NEOWISE REACTIVATION MISSION, KUIPER-BELT OBJECTS, PHYSICAL-CHARACTERIZATION, ABSOLUTE MAGNITUDES, ASTEROID POPULATION, SPACE-TELESCOPE, THERMAL-MODEL, ALBEDO, CHELYABINSK

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