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NGC 2648
NGC 2648 as seen during the SDSS
Observation data (J2000 epoch)
Constellation	Cancer
Right ascension	08 42 39
Declination	+14° 17′ 08″
Apparent magnitude (V)	11.82
Apparent magnitude (B)	12.8
Surface brightness	23.61 mag/arcsec²
Characteristics
Type	SAa
Other designations
PGC 24464, ARP 89, UGC 4541, MCG 2-22-5, CGCG 60-35, KCPG 168A

NGC 2648 is an unbarred spiral galaxy located in the constellation Cancer. Its speed relative to the cosmic microwave background is 2,451 ± 19 km/s, which corresponds to a Hubble distance of 36.2 ± 2.6 Mpc (∼118 million ly). NGC 2648 was discovered by German-British astronomer William Herschel in 1784.

The galaxies PGC 24469 and NGC 2648 are designated in Halton Arp's Atlas of Peculiar Galaxies as Arp 89.

The luminosity class of NGC 2648 is I and it has a broad HI line.

NGC 2648 is a retired galaxy, which is a galaxy in which star formation has practically ceased is said to be passive. However, some passive galaxies may still show faint emission lines similar to those of LINER galaxies. This is what a team of French and Brazilian astronomers discovered. It is from them that the name retired galaxy comes.

To date, three non-redshift measurements give a distance of 34.333 ± 0.231 Mpc (∼112 million ly), which is within the Hubble distance values.

See also

• List of NGC objects (2001–3000)

External links

• NGC 2648 at NASA/IPAC
• NGC 2648 at SIMBAD
• NGC 2648 at LEDA

References

1. ^ "By Name | NASA/IPAC Extragalactic Database". ned.ipac.caltech.edu. Retrieved 2024-07-03.
2. "New General Catalog Objects: NGC 2600 - 2649". cseligman.com. Retrieved 2024-07-03.
3. "titre : Retired galaxies behaving like active galaxies". Observatoire de Paris - PSL - Centre de recherche en astronomie et astrophysique. Retrieved 2024-07-03.
4. "NED Query Results for NGC 2648". ned.ipac.caltech.edu. Retrieved 2024-07-03.

v t e Constellation of Cancer
Cancer in Chinese astronomy List of stars in Cancer
Stars	Bayer α (Acubens) β (Tarf) γ (Asellus Borealis) δ (Asellus Australis) ε (Meleph) ζ (Tegmine) ζ η θ ι κ λ (Piautos) μ μ ν ξ (Nahn) ο ο π π ρ (Copernicus) ρ σ σ σ τ υ υ φ φ χ ψ ψ ω ω Flamsteed 1 3 5 7 8 11 12 15 20 (d) 21 24 25 (d) 27 28 (CX) 29 34 35 36 (c) 37 38 39 40 42 44 45 (A) 46 49 (b) 50 (A) 53 54 57 60 61 66 67 68 70 71 75 78 79 80 83 Variable R X RS VZ AZ DX EI HL HM HD 72945 72946 73534 (Gakyid) 79498 Other GJ 3470 (Kaewkosin) HIP 41378 K2-187 LHS 2090 Pr0211 WD J0914+1914 YBP 1194
Exoplanets 55 Cancri b c d e f β Cancri b GJ 3470 b HD 73534 b HIP 41378 b c d e f Pr0201 b
Star clusters Beehive Cluster Messier 67
Nebulae Abell 30 Abell 31
Galaxies	NGC 2503 2535 2536 2608 2623 2648 2775 2801 2803 2804 2812 Other 3C 191 3C 212 3C 215 DLA0817g IC 2431 OJ 287 QSO B0839+187 UGC 4457 4C +29.30 SDSS J0849+1114
Galaxy clusters Abell 671 Musket Ball Cluster
Category

• Discoveries by William Herschel
• Principal Galaxies Catalogue objects
• UGC objects
• Unbarred spiral galaxies
• Cancer (constellation)
• NGC objects
• Astronomical objects discovered in 1784