Astronomy:NGC 7840
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Short description: Galaxy in the constellation Pisces
| NGC 7840 | |
|---|---|
 SDSS image of NGC 7840 | |
| Observation data (J2000 epoch) | |
| Constellation | Pisces[1][2] |
| Right ascension | 00h 07m 08.79s[3] |
| Declination | +08° 22′ 59.6″[3] |
| Apparent magnitude (V) | 15[1] |
| Characteristics | |
| Type | S?[1] |
| Apparent size (V) | 0.676′ × 0.457′ |
| Other designations | |
| NGC 7840, PGC 1345780[3] | |
NGC 7840 is an unbarred spiral galaxy in the constellation Pisces.[1] It is the last numerical entry in the New General Catalogue.
For observing from Earth's surface, it has a magnitude of 15.5 in the early 21st century.[4] One observing guide recommended a telescope with a least 300mm aperture for observations.[4]
See also
- Spiral galaxy
- Unbarred spiral galaxy
- List of NGC objects (7000–7840)
NGC 7840 (2MASS)
References
- ↑ 1.0 1.1 1.2 1.3 Celestial Atlas, "NGC Objects: NGC 7800 - 7840 ", Courtney Seligman, March 2010 (accessed 2010-10-27)
- ↑ WikiSky, "NGC 7840" (accessed 2010-10-17)
- ↑ 3.0 3.1 3.2 "Search specification: NGC 7840". HyperLeda. Université Claude Bernard Lyon 1. http://leda.univ-lyon1.fr/ledacat.cgi?o=NGC%207840. Retrieved 2021-02-12.
- ↑ 4.0 4.1 Bakich, Michael E. (2010-07-10) (in en). 1,001 Celestial Wonders to See Before You Die: The Best Sky Objects for Star Gazers. Springer Science & Business Media. ISBN 9781441917775. https://books.google.com/books?id=qEhpS7d5ZdAC&dq=NGC+7840&pg=PA345.
External links
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