NGC/IC Project Restoration Effort

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NGC7021

 

Basic Information


Location and Magnitude


Right Ascension: 21:11:19.9
Declination: -64:1:31
Constellation: PAV
Visual Magnitude: 11.8

Historic Information


Discoverer: Herschel J.
Year of discovery: 1835
Discovery aperture: 18.3

Observational


Summary description: pF, cS, R, psbM, * 7ยท8 p
Sub-type: SB0

Corwin's Notes

===== NGC 7021 = NGC 7020. JH has made a simple error of 30 arcmin in his NPD in CGH. Once that is corrected, the identity is clinched by the bright star about 10 arcmin preceding the galaxy. In his observation of N7021 (in an earlier sweep than the one in which he found N7020), JH notes "... has a * 7.8m 10 arcmin prec, exactly in the parallel." Both Stewart and Frost noticed on Harvard plates taken at Arequipa that NGC 7021 was not in its position, but neither apparently made the connection with NGC 7020. Both SGC and ESO identify the correct galaxy, however. The galaxy itself is one of the most strangely beautiful ringed galaxies in the sky. A complete, though faint, outer ring encloses a hexagonal inner ring which is connected by "spokes" to a peculiar quasi-barlike inner structure. The inner ring also has bright knots at the end intersections of the hexagonal segments where ansae or nubs would be found in a normal early-type barred and ringed galaxy. See Ron Buta's comments about this galaxy in "The de Vaucouleurs Atlas of Galaxies" for more information.

Steve's Notes

===== NGC 7021 See observing notes for NGC 7020.