NGC 6308 is a large intermediate spiral galaxy in the constellation of Hercules. Its velocity with respect to the cosmic microwave background is 8797 ± 3 km/s, which corresponds to a Hubble distance of 129.74 ± 9.08 Mpc (∼423 million light-years).[1] It was discovered by German astronomer Albert Marth on 6 June 1863.[2]

NGC 6308
The intermediate spiral galaxy NGC 6308.
Observation data (J2000 epoch)
ConstellationHercules
Right ascension17h 11m 59.7148s[1]
Declination+23° 22′ 47.795″[1]
Redshift0.029402 [1]
Heliocentric radial velocity8814 ± 3 km/s[1]
Distance423.2 ± 29.6 Mly (129.74 ± 9.08 Mpc)[1]
Apparent magnitude (V)13.4[1]
Characteristics
TypeSAB(rs)c?[1]
Size~198,600 ly (60.89 kpc) (estimated)[1]
Apparent size (V)1.1' x 1.0'[1]
Other designations
IRAS 17099+2326, 2MASX J17115972+2322483, UGC 10747, MCG +04-40-021, PGC 59807, CGCG 139-043[1]

NGC 6308 has been identified as an isolated galaxy, i.e. it does not belong to a cluster or group.[3]

One supernova has been observed in NGC 6308: SN 2023oyz (type Ic, mag 20.4).[4]

See also

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References

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  1. ^ a b c d e f g h i j k "NASA/IPAC Extragalactic Database". Results for NGC 6308. Retrieved 6 August 2024.
  2. ^ Celestial Atlas entry for NGC 6308. Retrieved 6 August 2024.
  3. ^ Isolated galaxies. By Vettolani, G.; de Souza, R.; Chincarini, G. Astronomy and Astrophysics, Vol. 154, p. 343-348 (1986) Retrieved 6 August 2024.
  4. ^ Transient Name Server entry for SN 2023oyz. Retrieved 6 August 2024.
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