NGC 1360

NGC 1360, also known as the Robin's Egg Nebula,[4] is a planetary nebula in the constellation of Fornax. It was identified as a planetary nebula due to its strong radiation in the OIII (oxygen) bands. Reddish matter, believed to have been ejected from the original star before its final collapse, is visible in images.[5] It is slightly fainter than IC 2003.

NGC 1360
Emission nebula
Planetary nebula
NGC 1360 as taken by the Mount Lemmon SkyCenter
Observation data: J2000 epoch
Right ascension 03h 33m 14.646s[1]
Declination−25° 52′ 18.214″[1]
Distance1,145 ly (351 pc)[1]
1,794 ly (550 pc)[2] ly
Apparent magnitude (V)9.4[3]
Apparent dimensions (V)11.0 × 7.5 arcmin[3]
ConstellationFornax
Notable features11.4v magnitude central star[3]
DesignationsPK220-53.1, ESO 482-PN007, AM 0331-260, GC 5315, PN G220.3-53.9, CD-26 1339

The central star of the system was suspected to be binary since 1977, but was only confirmed in 2017. The central source consists of a low-mass O-type star and a white dwarf, with masses of 0.555 M☉ and 0.679 M☉ respectively.[6]

NGC 1360 was discovered in January 1868 by the German astronomer Friedrich August Theodor Winnecke.[7]

References
  1. "SIMBAD Astronomical Database". Results for NGC 1360. Retrieved 2011-06-03.
  2. Smith, H. (9 April 2015). "On the distances of planetary nebulae". Monthly Notices of the Royal Astronomical Society. 449 (3): 2980–3005. arXiv:1409.3422. Bibcode:2015MNRAS.449.2980S. doi:10.1093/mnras/stv456.
  3. "NGC/IC Project". Results for IC 1295. Archived from the original on 2012-05-20. Retrieved 2011-06-03.
  4. "NGC 1360 Robin's Egg Planetary Nebula". Archived from the original on 2016-03-03. Retrieved 2015-04-06.
  5. http://www.astrosurf.com/antilhue/ngc1360.htm Astrosurf
  6. Miszalski, B.; Manick, R.; Mikołajewska, J.; Iłkiewicz, K.; Kamath, D.; Van Winckel, H. (2018). "SALT HRS discovery of a long-period double-degenerate binary in the planetary nebula NGC 1360". Monthly Notices of the Royal Astronomical Society. 473 (2): 2275. arXiv:1703.10891. Bibcode:2018MNRAS.473.2275M. doi:10.1093/mnras/stx2501.
  7. Students for the Exploration and Development of Space. "Friedrich August Theodor Winnecke (February 5, 1835 – December 3, 1897)". http://seds.org/. Retrieved March 18, 2012. External link in |publisher= (help)


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