NGC 1023 Group

Short description: Group of galaxies about 20.6 million light-years from Earth

NGC 1023 Group

Observation data (Epoch )
Constellation(s)| Andromeda, Perseus, Triangulum
Brightest member| NGC 1023
Number of galaxies| ~23 plus 42 candidate members[1][2]
Distance
(co-moving)| 20.6 Mly (6.3 Mpc)
See also: Galaxy group, Galaxy cluster, List of galaxy groups and clusters

The NGC 1023 Group is a group of galaxies about 20.6 million light-years (6.3 Mpc) away from Earth. It is a group in the Local Supercluster, along with the Local Group.[3]

## Members

Members of the group Name  | Type | Magnitude

|
|

NGC 1023 | SB(rs)0  | 10.65
NGC 925 | SAB(s)d  | 10.96
NGC 959 | Sdm:  | 12.38
NGC 891 | SA(s)b  | 11.24
NGC 1239  | SAB(rs)cd  | 12.14
NGC 1058 | SA(rs)c  | 12.26
NGC 1003 | SAcd  | 12.1
NGC 949  | SA(rs)b?  | 11.8
NGC 959 | Sdm?  | 12.4
IC 239  | SAB(rs)cd  | 11.1
UGC 2034  | Im  | 13.1
UGC 2023  | Im?  | 13.0
UGC 2165  | dE,N  | 13.7
UGC 2126  | SABdm?  | 13.98
UGC 2157  | Sdm?  | 13.99
NGC 1023A  | IB?  | 12.7
UGC 2014  | Im?  | 14.5
UGC 1865  | Sm?  | 14.42
NGC 1023C  | dE/I  | 16.31
NGC 1023B  | dI  | 16.35
NGC 1023D  | dE/I  | 16.51
GALEXASC J024016.48+373731.1  | dE,N  | 16.66
NGC 1023 GROUP:[TT2009] 42  | dE  | 19.25

* Probable (dwarfs): DDO 024, DDO 025.
* Possible members: NGC 672, IC 1727, NGC 1156(?).
* Possible (dwarfs): DDO 011, DDO 017, DDO 019, DDO 022, DDO 026.

## Map

The location of the NGC 1023 group within the Virgo Supercluster (as part of the Laniakea Supercluster) can be found near the center of this diagram - below the blue "Local Group" mark.

## References

1. ↑ Trentham, Neil; Tully, R. Brent (2009). "Dwarf galaxies in the NGC 1023 Group". Monthly Notices of the Royal Astronomical Society 392 (2): 722–734. doi:10.1111/j.1365-2966.2009.15189.x. Bibcode: 2009MNRAS.398..722T.
2. ↑ "NGC 1023 Group". March 2014. http://www.asod.info/?p=11555.
3. ↑ "The Universe within 100 million Light Years - the Virgo Supercluster". Atlas of the Universe. http://www.atlasoftheuniverse.com/virgo.html.

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