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NGC 433
Observation data (J2000 epoch)
Right ascension	01 15 12.0
Declination	+60° 08′ 00″
Distance	6.5 kly (2.0 kpc)
Physical characteristics
Mass	479+810 −301 M☉
Estimated age	65 Myr
Other designations	C 0112+598, OCISM 71, OCl 319, 16, MWSC 0110.
Associations
Constellation	Cassiopeia
See also: Open cluster, List of open clusters

NGC 433 is an open cluster in the northern constellation of Cassiopeia, located at a distance of 6,500 light years from the Sun. It was discovered on September 29, 1829, by John Herschel, and was described by John Dreyer as "cluster, small, a little compressed." The cluster is considered on the poor side, with only 12 stars above magnitude 16. It has a linear diameter of 26.3 ly, with around 479 times the mass of the Sun and an age of 65 million years.

References

1. ^ Kharchenko, N. V.; et al. (2005). "Astrophysical parameters of Galactic open clusters". Astronomy and Astrophysics. 438 (3): 1163–1173. arXiv:astro-ph/0501674. Bibcode:2005A&A...438.1163K. doi:10.1051/0004-6361:20042523. S2CID 9079873.
2. ^ Joshi, Y. C.; et al. (October 2016). "Study of open clusters within 1.8 kpc and understanding the Galactic structure". Astronomy & Astrophysics. 593: 13. arXiv:1606.06425. Bibcode:2016A&A...593A.116J. doi:10.1051/0004-6361/201628944. S2CID 118610932. A116.
3. "NGC 433". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved April 19, 2017.
4. "New General Catalog Objects: NGC 400 - 449". Cseligman. Retrieved April 19, 2017.
5. Battinelli, P.; et al. (May 1992). "CCD Photometric and Spectroscopic Observations of the Young Open Cluster NGC 433". Astronomical Journal. 103: 1596. Bibcode:1992AJ....103.1596B. doi:10.1086/116172.

v t e Constellation of Cassiopeia
List of stars in Cassiopeia Cassiopeia in Chinese astronomy
Stars	Bayer α (Schedar) β (Caph) γ (Navi/Tsih) δ (Ruchbah) ε (Segin) ζ (Fulu) η (Achird) θ (Marfak) ι κ λ μ ν ξ ο π ρ σ τ υ υ (Castula) φ χ ψ ω Flamsteed 1 2 4 6 9 10 12 42 47 48 (A) 49 50 54 Variable R S TZ WZ YZ (21) AO AR PZ V373 V509 V547 V669 V705 V762 V863 V773 V987 V1022 V1405 HR 5 91 144 196 244 273 297 743 932 8832 8853 8881 HD 861 7924 7977 15558 17156 (Nushagak) 240210 240237 240429 240430 Other BD+60°2522 Gliese 49 IRAS 23304+6147 LS I +61 303 PSR J0205+6449 Tycho G 4U 0142+61 WR 2 WR 3
Exoplanets HD 7924 b HD 17156 b HD 219134 b c d e (h) f g HD 240210 b HD 240237 b
Star clusters Messier 52 Messier 103 NGC 103 NGC 110 NGC 129 NGC 133 NGC 136 NGC 146 NGC 189 NGC 225 NGC 358 NGC 366 NGC 381 NGC 433 NGC 436 NGC 457 NGC 559 NGC 637 NGC 654 NGC 659 NGC 663 NGC 1027 NGC 7789 NGC 7790 Trumpler 3
Nebulae	NGC 281 7635 Other 3C 58 Cassiopeia A Heart Nebula IC 289 IC 1805 KjPn 8 LBN 114.55+00.22 Sh 2-185 Westerhout 5
Galaxies	NGC 147 185 278 Other Andromeda VII 3C 20 3C 35 Dwingeloo 1 Dwingeloo 2 MB 3 IC 10 Maffei 1 Maffei 2 QSO B0153+744
Astronomical events SN 1181 SN 1572 (B)
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