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NGC 1101
NGC 1101
	SDSS image of NGC 1101
Observation data (J2000 epoch)
Constellation	Cetus
Right ascension	02h 48m 14.8s
Declination	+04° 34′ 40.8″
Redshift	0.023660
Heliocentric radial velocity	7,093 km/s
Distance	331 Mly (101.39 ± 7.10 Mpc)
Apparent magnitude (V)	13.0
Apparent magnitude (B)	14.0
Characteristics
Type	S0
Size	109,000 ly (estimated 33.27 kpc)
Apparent size (V)	1.3' x1.0'
Other designations
	PGC 10613, UGC 2278, MCG +01-08-003, CGCG 415-011, NPM1G +04.0092

NGC 1101 is a lenticular galaxy in the Cetus constellation,^[1]^[2] and is an estimated 331 million light-years away from Earth. It was discovered on 22 November 1876 by French astronomer Edouard Stephan, who described it as "very faint, small, round with a brighter middle".^[3]

NGC 1101 contains a flat-spectrum radio source^[4] and it has a HI line width.^[5]

To date, a non-redshift measurement gives the galaxy a distance of 81,700 megaparsecs (Mpc) or equal to ~266 million light-years.^[6] This value is just outside the Hubble distance values. According to NASA/IPAC database, the diameter of NGC 1101 is calculated to be around 41.3 kiloparsecs (~135,000 light-years) if the Hubble distance were to calculate it.

References

^ "A Complete Guide to the Solar System and the Night Sky | TheSkyLive". theskylive.com. Retrieved 2024-08-25.
^ "Data from Revised NGC/IC Catalogue, NGC 1100-1199". astrovalleyfield.ca. Retrieved 2024-08-25.
^ "New General Catalog Objects: NGC 1100 - 1149". cseligman.com. Retrieved 2024-08-25.
^ Healey, Stephen E.; Romani, Roger W.; Taylor, Gregory B.; Sadler, Elaine M.; Ricci, Roberto; Murphy, Tara; Ulvestad, James S.; Winn, Joshua N. (2007-07-01). "CRATES: An All-Sky Survey of Flat-Spectrum Radio Sources". The Astrophysical Journal Supplement Series. 171: 61–71. arXiv:astro-ph/0702346. doi:10.1086/513742. ISSN 0067-0049.
^ Haynes, Martha P.; Giovanelli, Riccardo; Herter, Terry; Vogt, Nicole P.; Freudling, Wolfram; Maia, M. A. G.; Salzer, J. J.; Wegner, G. (1997-04-01). "21 CM H1 Line Spectra of Galaxies in Nearby Clusters". The Astronomical Journal. 113: 1197–1211. doi:10.1086/118337. ISSN 0004-6256.
^ "NED Query Results for NGC 1101". ned.ipac.caltech.edu. Retrieved 2024-08-25.