Table 3

Rel. abundance of oxygenated compounds with respect to water in [%].

Comet CH3OH H2CO HCOOH CH2OHCH2OH HCOOCH3 CH3CHO NH2CHO

1P/Halley 1.8[1,2]; 1.7[3] 4[4,5,6]; 1.5[3]
C/1995 O1 (Hale-Bopp) 2.4[7] 1.1[7] 0.09[7] 0.25[8] 0.08[7] 0.025[9] 0.015[7]
C/1996 B2 (Hyakutake) 2[10,11] 1[10,11]
C/2001 A2 (LINEAR) 2.8[12]; 3.9[13] 0.24[12,14]
C/2012 F6 (Lemmon) 1.6[15]; 1.48[16] 0.7[15]; 0.54[16] <0.07[15] 0.24[15] <0.16[15] <0.07[15] 0.016[15]
C/2013 R1 (Lovejoy) 2.6[15] 0.7[15] 0.12[15] 0.35[15] <0.20[15] 0.10[15] 0.021[15]
103P/Hartley 2 1.96[17]; 2.28[18]; 1.13-1.43[19] 0.12[17]; 0.23[18]; 0.11[19]
73P/SW3/B 0.177–0.339[20]; 0.9–1.2[27] 0.14[20]; 0.15[20];0.4–1[27]
73P/SW3/C 0.149[20]; 0.254[20]; 0.7–1[27] 0.147[20]; 0.095[20]; 0.5–1.1[27]
2P/Encke 3.48[21] <0.13[21]
9P/Tempel 1 before impact 1.0[23]; 2.8[24] <1.5[24]
9P/Tempel 1 after impact 0.75[23]; 2.7[24] 0.84[22]; <2.3[24]
6P/d’Arrest 1.42[23] 0.36[23]
17P/Holmes 2.25[25]
21P/Giacobini-Zinner 0.9–1.4[26] <0.5–0.8[26]
67P summer hemisphere 0.31[28] 0.33[28] 0.008[28] 0.0008[28] 0.004[28] 0.01[28] <1e-4[28]
67P winter hemisphere 0.55[28] 0.53[28] 0.03[28] <2.5e-3[28] 0.023[28] 0.024[28] <1e-3[28]

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