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Hubble Measures Atmospheric Structure of Extrasolar Planet HD 209458b

Hubble Measures Atmospheric Structure of Extrasolar Planet HD 209458b

About the Object

  • R.A. Position
    R.A. PositionRight ascension – analogous to longitude – is one component of an object's position.
    22h 03m 10s.80
  • Dec. Position
    Dec. PositionDeclination – analogous to latitude – is one component of an object's position.
    +18° 53' 4".0
  • Constellation
    ConstellationOne of 88 recognized regions of the celestial sphere in which the object appears.
    Pegasus
  • Distance
    DistanceThe physical distance from Earth to the astronomical object. Distances within our solar system are usually measured in Astronomical Units (AU). Distances between stars are usually measured in light-years. Interstellar distances can also be measured in parsecs.
    Approximately 150 light-years (46 parsecs)

About the Data

  • Data Description
    Data DescriptionProposal: A description of the observations, their scientific justification, and the links to the data available in the science archive.
    Science Team: The astronomers who planned the observations and analyzed the data. "PI" refers to the Principal Investigator.
    The Hubble image was created from HST data from proposal 10145: A. Vidal-Madjar, A. Lecavelier des Etangs, and J.-M. Desert (CNRS, Institute d'Astrophysique de Paris), G. Ballester (University of Arizona), J. Walsh (Space Telescope - European Coordinating Facility), D. Ehrenreich, G. Hebrard, and R. Ferlet (CNRS, Institute d'Astrophysique de Paris), J. Mcconnell (York University), M. Mayor (Observatoire de Geneve), C. Parkinson (California Institute of Technology); and proposal 9447: D. Charbonneau (Harvard University), J.-L. Bertaux (Service d'Aeronomie du Centre National de la Recherche Scientifique), T. Brown (University Corporation for Atmospheric Research), R. Gilliland (STScI), and R. Noyes (Harvard-Smithsonian Center for Astrophysics). The science team comprises: G. Ballester (University of Arizona), D. Sing (University of Arizona/Institute d'Astrophysique de Paris), and F. Herbert (Institute d'Astrophysique de Paris).
  • Instrument
    InstrumentThe science instrument used to produce the data.
    HST>STIS, HST>ACS/HRC, and HST>ACS/SBC
  • Exposure Dates
    Exposure DatesThe date(s) that the telescope made its observations and the total exposure time.
    May - July, 2003 (STIS) and May - July, 2005 (ACS)
  • Filters
    FiltersThe camera filters that were used in the science observations.
    STIS: G430L, G750L ACS: PR110L, PR200L, F115LP, F220W, F344N, F250W, and F330W
  • Object Name
    Object NameA name or catalog number that astronomers use to identify an astronomical object.
    HD 209458b
  • Object Description
    Object DescriptionThe type of astronomical object.
    Extrasolar Planet
  • Release Date
    January 31, 2007
  • Science Release
    Hubble Probes Layer-cake Structure of Alien World’s Atmosphere
  • Credit
    NASA, ESA, and A. Feild (STScI)

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Details

Last Updated
Mar 28, 2025
Contact
Media

Claire Andreoli
NASA’s Goddard Space Flight Center
Greenbelt, Maryland
claire.andreoli@nasa.gov