• Thumbnail for NGC 6818
    The Little Gem Nebula or NGC 6818 is a planetary nebula located in the constellation of Sagittarius. It has magnitude 10 and oval diameter of 15 to 22...
    3 KB (266 words) - 18:38, 18 January 2024
  • Thumbnail for NGC 6782
    NGC 6782 is a barred spiral galaxy located in the southern constellation of Pavo, at a distance of approximately 173 megalight-years from the Milky Way...
    7 KB (532 words) - 19:23, 13 April 2024
  • Thumbnail for NGC 6509
    NGC 6509 is a spiral galaxy in the equatorial constellation of Ophiuchus. It was discovered on July 20, 1879 by the French astronomer Édouard Stephan...
    6 KB (381 words) - 17:11, 28 August 2024
  • Thumbnail for Metallicity
    7324) Å, and [OIII] λ = (4363, 4959, 5007) Å), nitrogen (e.g. [NII] λ = (5755, 6548, 6584) Å), and sulfur (e.g. [SII] λ = (6717, 6731) Å and [SIII] λ = (6312...
    41 KB (4,777 words) - 07:24, 22 December 2024
  • Thumbnail for HAT-P-17
    Confirmed Transiting Planets". The Astronomical Journal. 146 (1). 9. arXiv:1305.6548. Bibcode:2013AJ....146....9A. doi:10.1088/0004-6256/146/1/9. S2CID 119117620...
    11 KB (633 words) - 04:14, 11 September 2024