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Full Mosaic With Outlines of Detail Sections and Center of Expansion Marked
About the Object
- R.A. PositionR.A. PositionRight ascension – analogous to longitude – is one component of an object's position.23h 23m 24s
- Dec. PositionDec. PositionDeclination – analogous to latitude – is one component of an object's position.+58° 48' 54"
- ConstellationConstellationOne of 88 recognized regions of the celestial sphere in which the object appears.Cassiopeia
- DistanceDistanceThe 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 3,400 parsecs (11,000 light-years)
- DimensionsDimensionsThe physical size of the object or the apparent angle it subtends on the sky.The bright remnant shell has a diameter of about 4 parsecs (13 light-years).
About the Data
- Data DescriptionData 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.Principal Astronomers: R. Fesen (Dartmouth), J. Morse (Univ. of Colorado), R. Chevalier (Univ. of Virginia), K. Borkowski (North Carolina State Univ.), C. Gerardy (Dartmouth), S. Lawrence (Hofstra Univ.), S. van den Bergh (Dominion Astrophys. Obs.) - InstrumentInstrumentThe science instrument used to produce the data.HST>WFPC2
- Exposure DatesExposure DatesThe date(s) that the telescope made its observations and the total exposure time.January 2000, and January 2002, Exposure Time: 14 hours
- FiltersFiltersThe camera filters that were used in the science observations.F850LP, F675W (R), F450W (B)
- Object NameObject NameA name or catalog number that astronomers use to identify an astronomical object.Cassiopeia A, Cas A
- Object DescriptionObject DescriptionThe type of astronomical object.Supernova Remnant
- Release DateJuly 3, 2002
- Science ReleaseColorful Fireworks Finale Caps a Star’s Life
- Credit
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Last Updated
Mar 28, 2025
Contact
Media
Claire Andreoli
NASA’s Goddard Space Flight Center
Greenbelt, Maryland
claire.andreoli@nasa.gov
