NGC 68 group

VV 166
VV 166
Observation data (Epoch )
Constellation(s)	Andromeda
Right ascension	main group 00h 18m 30s cluster center 00h 18m 45s
Declination	main group 30° 03′ 00″ cluster center 30° 00′ 00″
Number of galaxies	40 (confirmed); 60+ (possible)
Richness class	Group 0/1
Bautz–Morgan classification	type II/III
Velocity dispersion	~6750
Redshift	0.019 to 0.025
Distance ; (co-moving)	~300 mly
Other designations
	[M98j] 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
	See also: Galaxy group, Galaxy cluster, List of galaxy groups and clusters

Last updated December 05, 2021

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.^[2] The prominent elliptical galaxy in the region, NGC 68, is probably not a member of the group.

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^h 18^m 12.18^s	30° 03′ 17.5″	0.020734^[1]	40,000	275^[3]
NGC 67a	00^h 18^m 14.83^s	30° 03′ 45″	0.022162	35,000	300
NGC 68	00^h 18^m 18.48^s	30° 04′ 15.4″	0.01913	90,000	260
NGC 69	00^h 18^m 20.5^s	30° 02′ 21.2″	0.022285	80,000	300
NGC 70	00^h 18^m 22.6^s	30° 04′ 44″	0.023907	180,000	320
NGC 71	00^h 18^m 23.6^s	30° 03′ 45″	0.022339	130,000	300
NGC 72	00^h 18^m 28.36^s	30° 02′ 23.7″	0.024213	120,000	325
NGC 72a	00^h 18^m 34.35^s	30° 02′ 08″	0.022399	25,000	300
NGC 74	00^h 18^m 49.39^s	30° 03′ 39.1″	0.023646	65,000	315
GALEXASC J001817.48+295854.3	00^h 18^m 17^s	29° 58′ 50″	0.024981	30,000^[4]	335
PGC 1183	00^h 18^m 14.05^s	29° 57′ 05″	0.020374	70,000	275
PGC 1163	00^h 17^m 46.02^s	30° 09′ 4.5″	0.021885	75,000	295
2MASX J00174636+2957409	00^h 17^m 46.3^s	29° 57′ 39″	0.024113	60,000	325
2MASX J00183652+2955586	00^h 18^m 36.5^s	29° 55′ 55.2″	0.021475	30,000	290
2MASX J00181971+2954372	00^h 18^m 19.67^s	29° 54′ 35″	0.022192	50,000	300
2MASX J00181589+2954145	00^h 18^m 15.92^s	29° 54′ 12.5″	0.024093	45,000	325
2MASX J00191196+3000506	00^h 18^m 11.97^s	30° 00′ 47.8″	0.023456	45,000	315
2MASX J00191966+3005286	00^h 19^m 19.64^s	30° 05′ 26″	0.02389	60,000	320
2MASX J00183355+2950272	00^h 18^m 31.52^s	29° 50′ 24.3″	0.020981	30,000	285
2MASX J00174173+2951151	00^h 17^m 41.71^s	29° 51′ 12.4″	0.022359	35,000	300
PGC 1138	00^h 17^m 17.38^s	30° 12′ 30.5″	0.020988	55,000	285
PGC 1119	00^h 17^m 02.63^s	29° 56′ 29.7″	0.023116	80,000	310
NGC 76	00^h 19^m 37.81^s	29° 55′ 59.3″	0.02444	120,000	330
AGC 102761	00^h 19^m 43.83^s	30° 03′ 25.5″	0.023590	10,000	320
2MASX J00164915+3010462	00^h 16^m 49.16^s	30° 10′ 43.5″	0.024133	40,000	325
PGC 1266	00^h 19^m 43.06^s	29° 56′ 4.1″	0.022339	45,000	300
2MASX J00181849+2942002	00^h 18^m 18.47^s	29° 41′ 57.7″	0.022749	45,000	305
2MASX J00194032+2949286	00^h 19^m 40.35^s	29° 49′ 26.1″	0.025621	50,000	345
PGC 1090	00^h 16^m 32.85^s	30° 20′ 42.5″	0.021331	85,000	290
PGC 1220	00^h 18^m 55.28^s	30° 30′ 46.6″	0.02408	50,000	325
2MASX J00160018+3002561	00^h 16^m 00.31^s	30° 02′ 54.9″	0.022676	45,000	305
AGC 100116	00^h 15^m 55.55^s	30° 04′ 25.2″	0.022379	35,000	305
PGC 1084	00^h 16^m 24.93^s	30° 22′ 25.5″	0.021148	55,000	290
2MASX J00203207+3003013	00^h 20^m 32.06^s	30° 02′ 58.8″	0.021058	35,000	285

Related Research Articles

NGC 67 Elliptical galaxy in the constellation Andromeda

NGC 67 is an elliptical galaxy located in the constellation Andromeda that was discovered on October 7, 1855 by R. J. Mitchell, who described it as "extremely faint, very small, round". The galaxy belongs to the NGC 68 group, which also contains the galaxies NGC 68, NGC 69, NGC 70, NGC 71, NGC 72, and possibly NGC 74.

NGC 68 Lenticular galaxy in the constellation Andromeda

NGC 68 is a lenticular galaxy, and the central member of the NGC 68 group, in the constellation Andromeda. The galaxy was discovered on September 11, 1784, by William Herschel, who observed the NGC 68 group as a single object and described it as "extremely faint, large, 3 or 4 stars plus nebulosity". As such, his reported location is between NGC 68, NGC 70, and NGC 71. By the time Dreyer looked at the galaxies to add to the NGC catalog, however, he was able to tell that the single galaxy observed by Herschel was in fact 3 adjacent galaxies, and cataloged them as NGC 68, NGC 70, and NGC 71.

NGC 70 Spiral galaxy in the constellation Andromeda

NGC 70 is a spiral galaxy located in the constellation Andromeda. It was discovered on October 7, 1855 by R. J. Mitchell and was also observed on December 19, 1897 by Guillaume Bigourdan from France who described it as "extremely faint, very small, round, between 2 faint stars"

NGC 72 Spiral galaxy in the constellation Andromeda

NGC 72 is a barred spiral galaxy estimated to be about 320 million light-years away in the constellation of Andromeda. It was discovered by R. J. Mitchell in 1855 and its magnitude is 13.5.

NGC 7012 is a large, bright elliptical galaxy located about 380 million Light-years away from Earth in the constellation Microscopium NGC 7012 was discovered by astronomer John Herschel on July 1, 1834.

NGC 4457 is an intermediate spiral galaxy located about 55 million light-years away in the constellation of Virgo. It is also classified as a LINER galaxy, a class of active galaxy defined by their spectral line emissions. NGC 4457 Is inclined by about 33°. It was discovered by astronomer William Herschel on February 23, 1784. Despite being listed in the Virgo Cluster Catalog as VCC 1145, NGC 4457 is a member of the Virgo II Groups which form an extension of the Virgo cluster.

NGC 4754 is a barred lenticular galaxy located about 53 million light-years away in the constellation of Virgo. NGC 4754 was discovered by astronomer William Herschel on March 15, 1784. It forms a non-interacting pair with the edge-on lenticular galaxy NGC 4762. NGC 4754 is a member of the Virgo Cluster.

NGC 4689 is a spiral galaxy located about 54 million light-years away in the constellation of Coma Berenices. NGC 4689 is also classified as a LINER galaxy. NGC 4689 is inclined at an angle of about 36° which means that the galaxy is seen almost face-on to the Earth's line of sight. NGC 4689 was discovered by astronomer William Herschel on April 12, 1784. The galaxy is a member of the Virgo Cluster.

NGC 4753 is a lenticular galaxy located about 60 million light-years away in the constellation of Virgo. NGC 4753 was discovered by astronomer William Herschel on February 22, 1784. It is notable for having distinct dust lanes that surround its nucleus. The galaxy is a member of the Virgo II Groups, an extension of the Virgo Cluster.

NGC 4492 is a spiral galaxy located about 90 million light-years away in the constellation Virgo. NGC 4492 was discovered by astronomer William Herschel on December 28, 1785. It was rediscovered by astronomer Arnold Schwassmann on January 23, 1900 and was listed as IC 3438. NGC 4492 lies in the direction of the Virgo Cluster. However, it is not considered to be a member of that cluster.

NGC 6028 is a barred lenticular galaxy and a ring galaxy located about 200 million light-years away in the constellation Hercules. Ring galaxies such as NGC 6028 are also known Hoag-type galaxies as they may have a resemblance to the prototype, Hoag's Object. NGC 6028 was discovered by astronomer William Herschel on March 14, 1784. It was then rediscovered by astronomer Guillaume Bigourdan on May 4, 1886.

NGC 521, also occasionally referred to as PGC 5190 or UGC 962, is a spiral galaxy located approximately 224 million light-years from the Solar System in the constellation Cetus. It was discovered on 8 October 1785 by astronomer William Herschel.

The Coma I Group is a group of galaxies located about 14.5 Mpc (47.3 Mly) away in the constellation Coma Berenices. The brightest member of the group is NGC 4725. The Coma I Group is rich in spiral galaxies while containing few elliptical and lenticular galaxies. Coma I lies in the foreground of the more distant Coma and Leo clusters and is located within the Virgo Supercluster.

NGC 1272 is a massive elliptical galaxy located about 230 million light-years away in the constellation Perseus. It was discovered by astronomer Heinrich d'Arrest on February 14, 1863. NGC 1272 has an active nucleus and is the second brightest member of the Perseus Cluster after NGC 1275.

NGC 3840 is a spiral galaxy located about 320 million light-years away in the constellation Leo. The galaxy was discovered by astronomer Heinrich d'Arrest on May 8, 1864. NGC 3840 is a member of the Leo Cluster. The galaxy is rich in neutral atomic hydrogen and is not interacting with its environment.

NGC 3861 is a large barred spiral galaxy with a ring-like structure located about 310 million light-years away in the constellation Leo. It was discovered by astronomer John Herschel on March 23, 1827. NGC 3861 is a member of the Leo Cluster and has a normal amount of neutral hydrogen and ionised hydrogen.

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NGC 705 is a lenticular galaxy located 240 million light-years away in the constellation Andromeda. The galaxy was discovered by astronomer William Herschel on September 21, 1786 and is also a member of Abell 262.

NGC 918 Barred spiral galaxy in the constellation Aries

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References

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

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[redshift-1] 1 2 3 "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.

[distance-3] Wright, Ned. "Ned Wright's Javascript Cosmology Calculator". astro.ucla.edu. UCLA . Retrieved 18 May 2014.

[size-4] "Angular Size Calculator". www.1728.org. Retrieved 18 May 2014.

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