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NGC 68 group

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Galaxy group in the constellation Andromeda
VV 166
Observation data (Epoch )
Constellation(s)Andromeda
Right ascensionmain group 00 18 30 cluster center 00 18 45
Declinationmain group 30° 03′ 00″ cluster center 30° 00′ 00″
Number of galaxies40 (confirmed)
60+ (possible)
Richness classGroup 0/1
Bautz–Morgan classificationtype II/III
Velocity dispersion~6750
Redshift0.019 to 0.025
Distance~300 mly
Other designations
003, VV 166, RSCG 01, WBL 007, USCG U012, RASSCALS SRGb 062, PCC S34-115, HOLM 006, SRGb 062, DOC SRGb 062, WP 01, PPS2 060, HDCE 0011

VV 166, sometimes also called the NGC 70 galaxy group or Arp 113, is a cluster of galaxies in Andromeda. The main group was discovered in 1784 by William Herschel, who listed the galaxies as a single object. Later, in the 1880s, John Louis Emil Dreyer managed to discern some of the galaxies in this region and cataloged them. The prominent elliptical galaxy in the region, NGC 68, is probably not a member of the group.

The galaxy group with labels

Superimposed on the group is a smaller cluster around 220 mly away, which includes AGC 102760, UGC 152, and UGC 166.

Members

galaxy RA DEC redshift size (ly) distance (mly)
NGC 67 00 18 12.18 30° 03′ 17.5″ 0.020734 40,000 275
NGC 67a 00 18 14.83 30° 03′ 45″ 0.022162 35,000 300
NGC 68 00 18 18.48 30° 04′ 15.4″ 0.01913 90,000 260
NGC 69 00 18 20.5 30° 02′ 21.2″ 0.022285 80,000 300
NGC 70 00 18 22.6 30° 04′ 44″ 0.023907 180,000 320
NGC 71 00 18 23.6 30° 03′ 45″ 0.022339 130,000 300
NGC 72 00 18 28.36 30° 02′ 23.7″ 0.024213 120,000 325
NGC 72a 00 18 34.35 30° 02′ 08″ 0.022399 25,000 300
NGC 74 00 18 49.39 30° 03′ 39.1″ 0.023646 65,000 315
GALEXASC J001817.48+295854.3 00 18 17 29° 58′ 50″ 0.024981 30,000 335
PGC 1183 00 18 14.05 29° 57′ 05″ 0.020374 70,000 275
PGC 1163 00 17 46.02 30° 09′ 4.5″ 0.021885 75,000 295
2MASX J00174636+2957409 00 17 46.3 29° 57′ 39″ 0.024113 60,000 325
2MASX J00183652+2955586 00 18 36.5 29° 55′ 55.2″ 0.021475 30,000 290
2MASX J00181971+2954372 00 18 19.67 29° 54′ 35″ 0.022192 50,000 300
2MASX J00181589+2954145 00 18 15.92 29° 54′ 12.5″ 0.024093 45,000 325
2MASX J00191196+3000506 00 18 11.97 30° 00′ 47.8″ 0.023456 45,000 315
2MASX J00191966+3005286 00 19 19.64 30° 05′ 26″ 0.02389 60,000 320
2MASX J00183355+2950272 00 18 31.52 29° 50′ 24.3″ 0.020981 30,000 285
2MASX J00174173+2951151 00 17 41.71 29° 51′ 12.4″ 0.022359 35,000 300
PGC 1138 00 17 17.38 30° 12′ 30.5″ 0.020988 55,000 285
PGC 1119 00 17 02.63 29° 56′ 29.7″ 0.023116 80,000 310
NGC 76 00 19 37.81 29° 55′ 59.3″ 0.02444 120,000 330
AGC 102761 00 19 43.83 30° 03′ 25.5″ 0.023590 10,000 320
2MASX J00164915+3010462 00 16 49.16 30° 10′ 43.5″ 0.024133 40,000 325
PGC 1266 00 19 43.06 29° 56′ 4.1″ 0.022339 45,000 300
2MASX J00181849+2942002 00 18 18.47 29° 41′ 57.7″ 0.022749 45,000 305
2MASX J00194032+2949286 00 19 40.35 29° 49′ 26.1″ 0.025621 50,000 345
PGC 1090 00 16 32.85 30° 20′ 42.5″ 0.021331 85,000 290
PGC 1220 00 18 55.28 30° 30′ 46.6″ 0.02408 50,000 325
2MASX J00160018+3002561 00 16 00.31 30° 02′ 54.9″ 0.022676 45,000 305
AGC 100116 00 15 55.55 30° 04′ 25.2″ 0.022379 35,000 305
PGC 1084 00 16 24.93 30° 22′ 25.5″ 0.021148 55,000 290
2MASX J00203207+3003013 00 20 32.06 30° 02′ 58.8″ 0.021058 35,000 285

References

  1. ^ "objects within 30 arcminutes of NGC 72a". NED. NASA/IPAC. Retrieved 18 May 2014.
  2. Seligman, Courtney. "New General Catalog Objects: NGC 50 - NGC 99". Cseligman.com. Retrieved 18 May 2014.
  3. Wright, Ned. "Ned Wright's Javascript Cosmology Calculator". astro.ucla.edu. UCLA. Retrieved 18 May 2014.
  4. "Angular Size Calculator". www.1728.org. Retrieved 18 May 2014.
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