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NGC 19

Coordinates: Sky map 00h 10m 40.8673s, +32° 58′ 58.633″
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NGC 19
NGC 19 imaged by SDSS
Observation data (J2000 epoch)
ConstellationAndromeda
Right ascension00h 10m 40.8673s[1]
Declination+32° 58′ 58.633″[1]
Redshift0.015971[1]
Heliocentric radial velocity4788 ± 2 km/s[1]
Distance202.16 ± 9.32 Mly (61.983 ± 2.857 Mpc)[1]
Group or clusterNGC 7831 Group (LGG 1)
Apparent magnitude (V)13.99[1]
Characteristics
TypeSB(r)bc
Size~73,300 ly (22.48 kpc) (estimated)[1]
Apparent size (V)1.2′ × 0.6′[1]
Other designations
IRAS 00080+3242, UGC 98, MCG +05-01-046, PGC 759, CGCG 499-065[1]

NGC 19 is a spiral galaxy in the Andromeda constellation. Its velocity with respect to the cosmic microwave background is 4,465±23 km/s, which corresponds to a Hubble distance of 214.8 ± 15.1 Mly (65.85 ± 4.62 Mpc).[1] However, 12 non-redshift measurements give a closer distance of 202.16 ± 9.32 Mly (61.983 ± 2.857 Mpc).[2] It was discovered by American astronomer Lewis Swift on 20 September 1885.[3][4] It is often incorrectly listed as a duplicate of NGC 21.[1]

NGC 7831 Group

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According to A.M. Garcia, NGC 19 is a member of the NGC 7831 group (also known as LGG 1), which contains at least 18 galaxies, including NGC 13, NGC 20, NGC 21, NGC 39 NGC 43, NGC 7805, NGC 7806, NGC 7819, and NGC 7836.[5]

See also

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References

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  1. ^ a b c d e f g h i j k "Results for object NGC 0019". NASA/IPAC Extragalactic Database. Retrieved 3 May 2010.
  2. ^ "Distance Results for NGC 0019". NASA/IPAC EXTRAGALACTIC DATABASE. NASA. Retrieved 11 June 2025.
  3. ^ Seligman, Courtney. "New General Catalogue Objects: NGC 19". Celestial Atlas. Retrieved 11 June 2025.
  4. ^ Swift, Lewis (January 1886). "Catalogue No.2 of Nebulae discovered at the Warner Observatory". Astronomische Nachrichten. 113: 305. Bibcode:1886AN....113..305S. doi:10.1002/asna.18861131903.
  5. ^ Garcia, A. M. (1993). "General study of group membership. II. Determination of nearby groups". Astronomy and Astrophysics Supplement Series. 100: 47. Bibcode:1993A&AS..100...47G.
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