NGC/IC Project Restoration Effort
(This is a very very beta version)
NGC549
Basic Information
Location and Magnitude
Right Ascension: 1:25:7.0
Declination: -38:0:26
Constellation: SCL
Visual Magnitude: 14.6
Historic Information
Discoverer: Herschel J.
Year of discovery: 1837
Discovery aperture: 18.3
Observational
Summary description: eeF, S, R, vgbM, 4th of 4
Sub-type: Sa
Corwin's Notes
=====
NGC 549. Steve Gottlieb has suggested that the SGC identification of this
galaxy is incorrect. He is almost certainly right, in spite of the poor right
ascension from John Herschel (18 seconds of time off); Herschel's declination
is correct, though. The SGC galaxy is 15 arcminutes south and 4 seconds of
time east of Herschel's position. Though this is brighter, it does not match
Herschel's description ("eeeF, S, R, vgbM. The 4th of a group of 4.").
Instead, this matches very closely what I'd expect him to see based on his
descriptions of the other three galaxies in the group (NGC 534, 544, and 546,
all "eeF, S, R, vgbM"). Accepting Steve's identification, the only error is
in Herschel's RA.
For each of the other three galaxies, Herschel has two observations, but only
lists one for N549. There are no significant zero point offsets in the
differences between the raw positions for the other three galaxies. This
means that we have no reasonable way to "correct" the original position of
N549 as given by Herschel. This in turn means that we are left with only the
description to help us identify the galaxy. And that points directly to the
object which Steve (and the original ESO list 5 in A&A Sup) chose as NGC 549.
Steve's Notes
=====
NGC 549
18" (12/17/11): extremely faint, fairly small, round, no structure, required averted vision. Located ~5' NNW of NGC 544/546 pair. Viewed at 11¡ elevation.
17.5" (11/1/97): not visible