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NGC 361
NGC 361 with DECam Credit: Digitized Sky Survey
Observation data (J2000 epoch)
Right ascension	01 02 10.1
Declination	−71° 36′ 17″
Distance	180000
Apparent magnitude (V)	12.24
Apparent dimensions (V)	2.6′ × 2.6′
Physical characteristics
Mass	2.15×10 M☉
Estimated age	8.10±1.20 Gyr
Other designations	ESO 051-SC 012.
Associations
Constellation	Tucana
See also: Open cluster, List of open clusters

NGC 361 is an open cluster in the Small Magellanic Cloud. It is located in the constellation Tucana. It was discovered on September 6, 1826, by James Dunlop. It was described by Dreyer as "very very faint, pretty large, very little extended, very gradually brighter middle." At an aperture of 31.0 arcseconds, its apparent V-band magnitude is 12.24, but at this wavelength, it has 0.40 magnitudes of interstellar extinction.

NGC 361 is about 8.1 billion years old. Its estimated mass is 2.15×10 M_☉, and its total luminosity is 1.04×10 L_☉, leading to a mass-to-luminosity ratio of 2.07 M_☉/L_☉. All else equal, older star clusters have higher mass-to-luminosity ratios; that is, they have lower luminosities for the same mass.

See also

• List of NGC objects (1–1000)

References

1. ^ "NASA/IPAC Extragalactic Database". Results for NGC 0361. Retrieved September 2, 2016.
2. ^ Song, Ying-Yi; Mateo, Mario; Bailey, John I.; Walker, Matthew G.; Roederer, Ian U.; Olszewski, Edward W.; Reiter, Megan; Kremin, Anthony (2021). "Dynamical masses and mass-to-light ratios of resolved massive star clusters – II. Results for 26 star clusters in the Magellanic Clouds". Monthly Notices of the Royal Astronomical Society. 504 (3): 4160–4191. arXiv:2104.06882. doi:10.1093/mnras/stab1065.
3. "NGC 361". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved January 1, 2017.
4. "New General Catalog Objects: NGC 350 - 399". Cseligman. Retrieved November 20, 2016.

External links

• Media related to NGC 361 at Wikimedia Commons
• NGC 361 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
• SEDS

v t e Constellation of Tucana
List of stars in Tucana Tucana in Chinese astronomy
Stars	Bayer α β β β γ δ ε ζ η θ ι κ λ λ μ ν π ρ Variable DS HR 8829 HD 4308 5980 7199 (Emiw) 215497 221287 (Poerava) Other AB7 Gliese 54 HV 2112 HV 11417 HV 11423 L 168-9 PMMR 62 SMC 018136
Exoplanets DS Tucanae Ab HD 4308 b HD 7199 b (Hairu) HD 215497 b c HD 219077 b HD 221287 b (Pipitea)
Star clusters	NGC 121 152 176 220 222 231 241 256 265 267 269 290 294 299 306 330 339 346 361 362 371 376 395 411 416 419 422 456 458 460 465 Other ξ (47)
Nebulae E0102
Galaxies	NGC 53 360 406 432 434 440 466 484 7329 Other ESO 148-2 ISOHDFS 27 Tucana Dwarf Small Magellanic Cloud (partly in Hydrus)
Category

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• Astronomical objects discovered in 1826
• Tucana
• Small Magellanic Cloud
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