NGC 362

NGC 362
False-color image of NGC 362 by GALEX;
Observation data
ClassIII[1]
ConstellationTucana
Right ascension01h 03m 14.26s[2]
Declination−70° 50′ 55.6″[2]
Distance29.29 ± 0.20 kly (8.98 ± 0.06 kpc)[3]
Apparent magnitude (V)6.4
Apparent dimensions (V)12.9′
Physical characteristics
Metallicity = –1.09[4] dex
Estimated age11.0 ± 0.6 Gyr[3]
Other designationsMelotte 4
See also: Globular cluster, List of globular clusters

NGC 362 (also known as Caldwell 104) is a globular cluster located in the constellation Tucana in the Southern Hemisphere, slightly north of the Small Magellanic Cloud, to which it is completely unrelated. It was discovered on August 1, 1826, by James Dunlop.[5] It is visible to the naked eye in dark skies, and is an impressive sight in a telescope, although it is somewhat overshadowed by its larger and brighter neighbour 47 Tucanae.[6]

Image of NGC 362 by Hubble Space Telescope

The stars of NGC 362 have an average metallicity higher than the stars in most globulars. This implies that NGC 362 is a relatively young globular cluster.[6] It also has an overabundance of binary stars, and an exceptionally tight core 13 light-years in diameter.[6] The orbit of NGC 362 is highly eccentric, taking it to within 3,260 light-years of the Galactic Center.[6]

  1. ^ Cite error: The named reference hcob849_11 was invoked but never defined (see the help page).
  2. ^ a b Cite error: The named reference aj140_6_1830 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference Gontcharov was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference mnras404_3_1203 was invoked but never defined (see the help page).
  5. ^ "NGC 362". SEDS. Retrieved 28 June 2015.
  6. ^ a b c d O'Meara, Stephen James (2003). Deep Sky Companions: The Caldwell Objects. Cambridge University Press. pp. 409–412. ISBN 9780521827966.