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SN 1999ec

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1999 type Ib supernova event in the constellation Canis Major

SN 1999ec was atype Ib supernova that was discovered in the interacting galaxyNGC 2207 on October 2, 1999.^[2] It was found on images taken with theKatzman Automatic Imaging Telescope at theLick Observatory.^[2] The progenitor is estimated to have had 38 times themass of the Sun and was 5.34 million years old at the time of the outburst.^[1]

^^a ^b ^cKuncarayakti, Hanindyo; et al. (August 2013), "Integral Field Spectroscopy of Supernova Explosion Sites: Constraining the Mass and Metallicity of the Progenitors. I. Type Ib and Ic Supernovae",The Astronomical Journal,146 (2): 14 pp,arXiv:1305.1105,Bibcode:2013AJ....146...30K,doi:10.1088/0004-6256/146/2/30,S2CID 118671861, 30
^^a ^b ^c ^d ^eJha, S.; et al. (1999). "Supernova 1999ec in NGC 2207".IAU Circular.7269: 2.Bibcode:1999IAUC.7269....2J.
^Barbon, R.; et al. (1999-11-01). "The Asiago Supernova Catalogue - 10 years after".Astronomy and Astrophysics Supplement Series.139 (3):531–536.arXiv:astro-ph/9908046.Bibcode:1999A&AS..139..531B.doi:10.1051/aas:1999404.S2CID 40532321.

Bayer	α (Sirius) β (Mirzam) γ (Muliphein) δ (Wezen) ε (Adhara) ζ (Furud) η (Aludra) θ ι κ λ μ ν¹ ν² ν³ ξ¹ ξ² ο¹ ο² π σ (Unurgunite) τ ω
Flamsteed	10 11 12 15 17 26 27 29
Variable	R W Z UW VY CX EZ FN FS FY LS NR V352
HR	2225 2318 2437 2447 2450 2758 2764 2766 2812
HD	43162 43197 (Amadioha) 45184 45364 47186 54879
Other	RX J0720.4−3125 WASP-64 (Atakoraka) WISE 0713−2917 WR 7

Exoplanets	ν² Canis Majoris b HD 47536 b c HD 47186 b c HD 45364 b c HD 43197 b

NGC	NGC 2204 NGC 2354 NGC 2360 NGC 2362 NGC 2374
Other	Gaia 1 Messier 41

Nebulae	NGC 2359 NGC 2361 Sh2-297

NGC	2207 2217 2227 2280 2283 2293
Other	Canis Major Overdensity IC 2163

Astronomical events	SN 1999ec SN 2003H