Compass and Scale File for NGC 3021

 Compass and Scale File for NGC 3021

Credits

Illustration: NASA, ESA, and Z. Levay (STScI);
Science: NASA, ESA, and A. Riess (STScI/JHU)

About The Object
Object Name NGC 3021
Object Description Spiral Galaxy
R.A. Position 09h 50m 57s.13
Dec. Position +33° 33' 12".71
Constellation Leo Minor
Distance 92 million light-years (28 megaparsecs)
Dimensions This image is roughly 1.5 arcminutes (41,000 light-years or 12.5 kiloparsecs) wide.
About The Data
Data Description Data from several HST proposals were used for this science. These include: , , , , and , PI: A. Riess (STScI/JHU). Data specific to observations of NGC 3021 are from HST proposals and PI: A. Riess (STScI/JHU). The science team includes: A. Riess (STScI/JHU), L. Macri (Texas A&M University), S. Casertano and M. Sosey (STScI), H. Lampeitl (STScI/University of Portsmouth, UK), H. Ferguson (STScI), A. Filippenko (University of California, Berkeley), S. Jha (Rutgers University), W. Li and R. Chornock (University of California, Berkeley), and D. Sarkar (University of California, Irvine).
Instrument HST>NICMOS and HST>ACS/WFC
Exposure Dates November 2005 - November 2006, Exposure Time: 23.8 hours (ACS), and October 2006 - March 2007, Exposure Time: 18.4 hours (NICMOS)
Filters ACS: F555W (V) and F814W (I) NICMOS: F160W (H-band)
About The Image
Compass Image Compass and Scale File for NGC 3021
About The Object
Object Name A name or catalog number that astronomers use to identify an astronomical object.
Object Description The type of astronomical object.
R.A. Position Right ascension – analogous to longitude – is one component of an object's position.
Dec. Position Declination – analogous to latitude – is one component of an object's position.
Constellation One of 88 recognized regions of the celestial sphere in which the object appears.
Distance The 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.
Dimensions The physical size of the object or the apparent angle it subtends on the sky.
About The Data
Data Description
  • Proposal: 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.
Instrument The science instrument used to produce the data.
Exposure Dates The date(s) that the telescope made its observations and the total exposure time.
Filters The camera filters that were used in the science observations.
About The Image
Image Credit The primary individuals and institutions responsible for the content.
Publication Date The date and time the release content became public.
Color Info A brief description of the methods used to convert telescope data into the color image being presented.
Orientation The rotation of the image on the sky with respect to the north pole of the celestial sphere.