NGC 5189 image taken with the Hubble Space Telescope on July 6, 2012.
|Right ascension||13h 33m 32.97s|
|Declination||-65° 58′ 26.7″|
|Apparent magnitude (V)||8.2, 8.5p|
|Apparent dimensions (V)||90 × 62 arcsec|
|Absolute magnitude (V)||-|
|Notable features||A peculiar PN with a binary in the center|
|Other designations||Spiral Planetary Nebula, Gum 47, IC 4274, He2-94, Sa2-95, PK 307-3.1|
NGC 5189 (Gum 47, IC 4274, nicknamed Spiral Planetary Nebula) is a planetary nebula in the constellation Musca. It was discovered by James Dunlop in 1 July 1826, who catalogued it as Δ252. For many years, well into the 1960s, it was thought to be a bright emission nebula. It was Karl Gordon Henize in 1967 who first described NGC 5189 as quasi-planetary based on its spectral emissions.
Seen through the telescope it seems to have an S shape, reminiscent of a barred spiral galaxy. The S shape, together with point-symmetric knots in the nebula, have for a long time hinted to astronomers that a binary central star is present. Observations with the Southern African Large Telescope have finally found a white dwarf companion in a 4.04 day orbit around the rare low-mass Wolf-Rayet type central star of NGC 5189. NGC 5189 is estimated to be 546 parsec. or 1,780 light years away from Earth. Other measurements have yielded results up to 900 parsecs (~3000 light-years)
- Classic Deep-Sky and Double Stars : NGC 5189 (Mus)  Southern Astronomical Delights
- Phillips J. P.; Reay N. K. (1983). "Ansae and the precession of central stars in planetary nebulae - The cases of NGC 5189 and NGC 6826". Astronomy and Astrophysics 117: 33–37.
- Manick R.; Miszalski B.; McBride V. (2015). "A radial velocity survey for post-common-envelope Wolf-Rayet central stars of planetary nebulae: first results and discovery of the close binary nucleus of NGC 5189". Monthly Notices of the Royal Astronomical Society 448: 1789–1806.
- "SIMBAD Astronomical Database". Results for NGC 5189. Retrieved 2012-12-21.
- SABIN L.; VAZQUEZ R.; LOPEZ J.A.; GARCIA-DIAZ M.T.; et al. (2012). "The filamentary multi-polar planetary nebula NGC 5189" (PDF). Rev. Mex. Astron. Astrofis 48: 165–76.
Media related to NGC 5189 at Wikimedia Commons
- NGC 5189 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
- APOD 1995
- Astronomy Picture of the Day - December 19, 2012
- A Cosmic Holiday Ornament, Hubble-Style
- Southern African Large Telescope: Elusive Binary System