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Compass and Scale Image of Arp 273

Image titled “Arp 273, UGC 1810, HST WFC3/UVIS” with compass arrows, scale bar, and color key.

About the Object

  • R.A. Position
    R.A. PositionRight ascension – analogous to longitude – is one component of an object's position.
    02h 21m 30.6s
  • Dec. Position
    Dec. PositionDeclination – analogous to latitude – is one component of an object's position.
    39° 21' 57.99"
  • Constellation
    ConstellationOne of 88 recognized regions of the celestial sphere in which the object appears.
    Andromeda
  • 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.
    About 340 million light-years (105 million parsecs)
  • Dimensions
    DimensionsThe physical size of the object or the apparent angle it subtends on the sky.
    The image is 2.6 arcminutes (260,000 light-years or 80,000 parsecs) wide.

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 image was created from Hubble data from proposal 12326: K. Noll (PI), Z. Levay, M. Mutchler, T. Borders, L. Frattare, M. Livio, C. Christian, and H. Bond (Hubble Heritage Team/STScI).
  • Instrument
    InstrumentThe science instrument used to produce the data.
    HST>WFC3/UVIS
  • Exposure Dates
    Exposure DatesThe date(s) that the telescope made its observations and the total exposure time.
    December 17, 2010, Exposure Time: 5.9 hours
  • Filters
    FiltersThe camera filters that were used in the science observations.
    F390W (U), F475X (g), and F600LP (Red Longpass)
  • Object Name
    Object NameA name or catalog number that astronomers use to identify an astronomical object.
    Arp 273, UGC 1810
  • Object Description
    Object DescriptionThe type of astronomical object.
    Interacting Galaxies
  • Release Date
    April 20, 2011
  • Science Release
    NASA’s Hubble Celebrates 21st Anniversary with “Rose” of Galaxies
    Read the release
  • Credit
    NASA, ESA, and Z. Levay (STScI)

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Image titled “Arp 273, UGC 1810, HST WFC3/UVIS” with compass arrows, scale bar, and color key.
Color Info
Color InfoA brief description of the methods used to convert telescope data into the color image being presented.

This image is a composite of separate exposures acquired by the WFC3 instrument on HST. Several filters were used to sample broad wavelength ranges. The color results from assigning different hues (colors) to each monochromatic (grayscale) image associated with an individual filter. In this case, the assigned colors are: Blue: F390W (U) Green: F475X (g) Red: F600LP (Red Longpass)

Compass and Scale
Compass and ScaleAn astronomical image with a scale that shows how large an object is on the sky, a compass that shows how the object is oriented on the sky, and the filters with which the image was made.

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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

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