The Hubble Sequence

Please take a look at what the SkyServer has to say about the Hubble Sequence. Keep in mind that not all astronomers believe that this is the ideal way to classify galaxies. In fact, some of the SDSS observers, who watch the sky scroll by all night, have commented that a large fraction of the galaxies they see can't be put into one of Hubble's categories.

Ellipticals

NGC 5846

NGC 5846, an E0 or E1, is the larger of the two ellipticals in this image. Even though these two galaxies appear very close, they are really almost 7 Megaparsecs (22.6 million light years) apart - too far to be currently interacting.

NGC 4261

NGC 4261 is the large elliptical in at the apex of the triangle of galaxies on the right. It is classified as an E5. It has a large black hole at its center.

SB0

NGC 2859

NGC 936

SDSS: Run 273, camcol 1, field 180
RA, Dec: 02h27m37.46s -01d09m22.6s
z = 0.00477 +/- 0.00001

Sa

NGC 1032

SDSS: Run 94, camcol 6, field 434
R.A., Dec 02h39m23.67s +01d05m37.6s
z = 0.00899 +/- 0.00006
S0/a

Sab

NGC 2775

NGC 1589

SDSS: Run 211, camcol 6, field 178
RA, Dec: 04h30m45.44s, +00d51m49.2s
z = 0.01265 +/- 0.00008

Sb

M 77	SDSS: Run 259, camcol 3, field 227 R.A., Dec 02h42m40.711s -00d00m47.81s z = 0.00379 +/- 0.00001

UGC 3214

SDSS: Run 259, camcol 3, field 453
R.A., Dec 04h57m56.65s -00d07m32.8s
z = 0.01636 +/- 0.00002

SABb

NGC 5746

SBb

NGC 1072

SDSS: Run 94, camcol 4, field 441
R.A., Dec 02h43m31.310s +00d18m24.60s
z = 0.02669 +/- 0.00016

Sbc

UGC 2346

SDSS: Run 94, camcol 5, field 455
R.A., Dec 02h51m54.590s +00d39m53.30s
z = 0.02911 +/- 0.00006

SBbc

NGC 1090

SDSS: Run 125, camcol 3, field 352-353
R.A. 02h46m33.92s, Dec -00d14m49.5s
z = 0.00920 +/- 0.00002

NGC 497

SDSS: Run 259, camcol 1, field 93
R.A. 01h22m23.780s, Dec -00d52m30.70s
z = 0.02715 +/- 0.00001

Sc

NGC 3184

SBc

NGC 3359

SABcd

NGC 493

SDSS Run 125, camcol 6, field 211
RA 01h22m08.99s, Dec +00d56m43.3s
z = 0.00780 +/- 0.00002

Irregular

Sextans B

UGC 2216

SDSS: Run 94, camcol 5, field 442
RA, Dec: 02h44m21.0s, +00d40m37s
z = 0.009243

Messier 82

SDSS: Run 4264, camcol 4, field 261
R.A., Dec 09h55m52.2s +69d40m47s
z = 0.00068 +/- 0.00001