Astronomy:NGC 1491
From HandWiki
| Emission nebula | |
|---|---|
| File:300px The nebula NGC 1491 Credit: Chuck Ayoub/Captured in Ha and OIII | |
| Observation data: J2000 epoch | |
| Subtype | H II region |
| Right ascension | 04h 03m 15.9s[1] |
| Declination | +51° 18′ 54″[1] |
| Distance | 9,800 ± 2,000 ly (3.02 ± 0.6 kpc)[1] ly |
| Apparent magnitude (V) | 8.5[2] |
| Apparent dimensions (V) | 6′ × 9′[2] |
| Constellation | Perseus[2] |
| Designations | Ced 25, LBN 704, LBN 706, Sharpless 2-206,[1] Little Pacman Nebula [3] |
NGC 1491 is an emission type bright nebula in the northern constellation of Perseus.[2] Alternatively, it is known as LBN 704, SH2-206, or the Fossil Footprint Nebula. It was discovered on 23 December 1790 by William Herschel. The nebula is located at a distance of about 9,800 light years from Earth[1]
The nebula gets its deep red coloration due to many massive stars (such as BD+50 866) embedded within NGC 1491 producing large amounts of ultraviolet radiation and ionizing the hydrogen gas that makes up the nebula.[4][5]
Gallery
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NGC 1491 from the Mount Lemmon Sky Center -
Closeup of NGC 1491 - Peter Kennett
References
- ↑ 1.0 1.1 1.2 1.3 1.4 "NGC 1491". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=NGC+1491.
- ↑ 2.0 2.1 2.2 2.3 Finlay, Warren H. (2014). Concise Catalogue of Deep-Sky Objects. The Patrick Moore Practical Astronomy Series (2nd ed.). Springer Cham. p. 175. doi:10.1007/978-3-319-03170-5. ISBN 978-3-319-03169-9.
- ↑ "Little Pacman (NGC 1491) | Deep⋆Sky Corner". https://www.deepskycorner.ch/obj/ngc1491.en.php.
- ↑ "Emission Nebula NGC 1491" (in en). https://www.noirlab.edu/public/images/noao-ngc1491/.
- ↑ "NGC 1491" (in en-GB). 2021-03-08. https://stargazerslounge.com/topic/373466-ngc-1491/.
External links
Template:NGC objects:1000-1499
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