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| Emission nebula | |
|---|---|
| Planetary nebula | |
 NGC 1535 using the 0.8m Schulman Telescope from the Mount Lemmon SkyCenter | |
| Observation data: J2000 epoch | |
| Right ascension | 04h 14m 15.782s[1] |
| Declination | −12° 44′ 21.68″[1] |
| Distance | 5500–7500 ly (1740–2310[2] pc) |
| Apparent magnitude (V) | 10.5[1] |
| Apparent dimensions (V) | 0.650′ × 0.611′[1] |
| Constellation | Eridanus |
| Designations | 2MASX J04141578-1244216, IRAS 04119-1251, PN G 206.4-40.5, PK 206-40.1, dML87 112, UITBOC 627, VERA J0414-1244 |
NGC 1535, also known as Cleopatra's Eye,[3] is a planetary nebula in the constellation of Eridanus, discovered by William Herschel on February 1, 1785.[4] It is very similar to the Eskimo Nebula in both color and structure but the central star can be quite difficult to observe visually.[5] The object is included in the Astronomical League's Herschel 400 Observing Program.[6]
At the center of NGC 1535, there is an O-type star with a spectral type of O(H)5.[7]
- ^ a b c d "NGC 1535". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 11 July 2015.
- ^ 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.
- ^ Stoyan, Ronald; Schurig, Stephan (2014). interstellarum Deep Sky Atlas. Erlangen: Cambridge University Press; Oculum-Verlag GmbH. ISBN 978-1-107-50338-0. OCLC 920437579.
- ^ Seligman, Courtney. "Celestial Atlas: NGC Objects: NGC 1500 - 1549". cseligman.com. Archived from the original on 1 January 2016. Retrieved 11 July 2015.
- ^ "Best of AOP - Planetary Nebulae: NGC 1535". Caelum Observatory (mirror of NOAO/AOP. NOAO. Archived from the original on 13 July 2015. Retrieved 11 July 2015.
- ^ "The Herschel 400 Club Observing List in New General Catalog (N.G.C.) Number Order" (PDF). The Astronomical League. Retrieved 2024-03-05.
- ^ González-Santamaría, I.; Manteiga, M.; Manchado, A.; Ulla, A.; Dafonte, C.; López Varela, P. (2021). "Planetary nebulae in Gaia EDR3: Central star identification, properties, and binarity". Astronomy & Astrophysics. 656: A51. arXiv:2109.12114. Bibcode:2021A&A...656A..51G. doi:10.1051/0004-6361/202141916. S2CID 237940344.