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Hi Aaron. Here's what the rest of the columns mean:
Vmag = visual magnitude
SB = Surface brightness. Applies to galaxies. This is the magnitude they appear as in the sky because they are not point sources like stars and are spread out over a small area. If you could scrunch them up into a point source then they would have the equivalent magnitude listed in the Vmag column.
Max/Min = Applies to galaxies and is the size in the sky (max = longest axis, min = shortest axis). Sizes are in arc-minutes (') unless it specifically says arc-seconds (").
PA = ??
Subtype = Spiral, barred, elliptical, etc. (Applies to galaxies)
(RA2k, min, sec) = position on the celestial sphere (equivalent to longitude on the earth). Typically listed as hours (0-23), minutes (0-59), seconds (0-59).
(dec, d, m, s) = position on the celestial sphere (equivalent to latitude on the earth). Listed as +/- degrees (-90 <-> +90), arc-minutes (0-59), arc-seconds (0-59).
Probably a good start for ordering is by visual magnitude from brightest (lowest number) to dimmest (highest number)
Cheers,
Andrew
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