There were 246 periodic comets disocevered by January 2003. Among them we present in the previous Section the plots for 220 comets. From the analysis of these plots we are able to assign nuclear magnitudes to 112 periodic comets, out of which 18 belong to QC 1, 17 to QC 2, 41 to QC 3, and 36 to QC 4. We discarded 108 periodic comets, for which we were not able to adopt or even approach a reasonable estimate of a nuclear magnitude, either because there are very few data (in many cases a single nuclear magnitude), or because a major coma contamination in the reported magnitudes is strongly suspected.
The 26 periodic comets for which we have no data are shown in Table 3.
| 003D/Biela | 005D/Brorsen | 020D/Westphal | 023P/Brorsen-Metcalf |
| 025D/Neujmin-2 | 034D/Gale | 035P/Herschel-Rigollet | 066P/Du-Toit |
| 095P/Chiron | 126P/IRAS | 133P/Elst-Pizarro | D/1766G1(Helfenzrieder) |
| D/1770L1(Lexell) | D/1783W1(Pigott) | D/1819W1(Blanpain) | D/1884O1(Barnard) |
| D/1886K1(Brooks) | D/1892T1(Barnard) | D/1894F1(Denning) | D/1895Q1(Swift) |
| D/1918W1(Schorr) | P/1896R2(Giacobini) | P/1990V1(Shoemaker-Levy) | P/1991V1(Shoemaker-Levy) |
| P/1998Y2(Li) | P/2003A1(LINEAR) |
The 108 periodic comets for which we have plots but we are not able to make
a reasonable estimate of the nuclear magnitude are shown in Table 4.
| 008P/Tuttle | 011P/Tempel-Swift-LINEAR | 012P/Pons-Brooks | 013P/Olbers |
| 018D/Perrine-Mrkos | 027P/Crommelin | 038P/Stephan-Oterma | 054P/De-Vico-Swift |
| 057P/Du-Toit-Neujmin-Delporte | 062P/Tsuchinshan-1 | 072P/Denning-Fujikawa | 076P/West-Kohoutek-Ikemura |
| 080P/Peters-Hartley | 083P/Russell-1 | 085P/Boethin | 093P/Lovas-1 |
| 100P/Hartley-1 | 102P/Shoemaker-1 | 103P/Hartley-2 | 107P/Wilson-Harrington |
| 127P/Holt-Olmstead | 132P/Helin-Roman-Alu-2 | 136P/Mueller-3 | 138P/Shoemaker-Levy-7 |
| 139P/Vaisala-Oterma | 140P/Bowell-Skiff | 141P/Machholz-2 | 142P/Ge-Wang |
| 145P/Shoemaker-Levy-5 | 146P/Shoemaker-LINEAR | 147P/Kushida-Muramatsu | 148P/Anderson-LINEAR |
| 149P/Mueller-4 | 150P/LONEOS | 151P/Helin | 153P/Ikeya-Zhang |
| 155P/Shoemaker | D/1952B1(Harrington-Wilson) | D/1960S1(Van-Houten) | D/1977C1(Skiff-Kosai) |
| D/1978C2(Tritton) | D/1978R1(Haneda-Campos) | D/1993F2(Shoemaker-Levy) | P/1986W1(Lovas) |
| P/1993W1(Mueller) | P/1994J3(Shoemaker) | P/1994N2(McNaught-Hartley) | P/1994X1(McNaught-Russell) |
| P/1996R2(Lagerkvist) | P/1997B1(Kobayashi) | P/1997T3(Lagerkvist-Carsenty) | P/1997V1(Larsen) |
| P/1998QP54(LONEOS-Tucker) | P/1998S1(LINEAR-Mueller) | P/1998U2(Mueller) | P/1998U3(Jager) |
| P/1998U4(Spahr) | P/1998VS24(LINEAR) | P/1998W1(Spahr) | P/1998W2(Hergenrother) |
| P/1998X1(ODAS) | P/1999D1(Hermann) | P/1999DN3(Korlevic-Juric) | P/1999J5(LINEAR) |
| P/1999RO28(LONEOS) | P/1999U3(LINEAR) | P/1999V1(Catalina) | P/1999WJ7(Korlevic) |
| P/1999X1(Hug-Bell) | P/1999XB69(LINEAR) | P/1999XN120(Catalina) | P/2000B3(LINEAR) |
| P/2000C1(Hergenrother) | P/2000G1(LINEAR) | P/2000R2(LINEAR) | P/2000S1(Skiff) |
| P/2000S4(LINEAR-Spacewatch) | P/2000U6(Tichy) | P/2000Y3(Scotti) | P/2001BB50(LINEAR-NEAT) |
| P/2001CV8(LINEAR) | P/2001F1(NEAT) | P/2001H5(NEAT) | P/2001J1(NEAT) |
| P/2001K1(NEAT) | P/2001MD7(LINEAR) | P/2001Q2(Petriew) | P/2001Q5(LINEAR-NEAT) |
| P/2001Q6(NEAT) | P/2001R1(LONEOS) | P/2001R6(LINEAR-Skiff) | P/2001T3(NEAT) |
| P/2001TU80(LINEAR-NEAT) | P/2001WF2(LONEOS) | P/2001X2(Scotti) | P/2001YX127(LINEAR) |
| P/2002AR2(LINEAR) | P/2002CW134(LINEAR) | P/2002EJ57(LINEAR) | P/2002JN16(LINEAR) |
| P/2002O5(NEAT) | P/2002O8(NEAT) | P/2002Q1(Van-Ness) | P/2002S1(Skiff) |
| P/2002T1(LINEAR) | P/2002T5(LINEAR) | P/2002T6(NEAT-LINEAR) | P/2002X2(NEAT) |
Table 5 contains the list of our 112 periodic comets
with assigned nuclear magnitudes.
The table presents the following columns:
| Comet | q (AU) | rmax (AU) | HN | QC | R (km) |
| 001P/Halley | 0.587 | 18.80 | 14.3 | 1 | 4.6 |
| 002P/Encke | 0.338 | 4.09 | 16.0 | 3 | 2.1 |
| 004P/Faye | 1.657 | 4.41 | 16.3 | 1 | 1.8 |
| 006P/D-Arrest | 1.353 | 5.60 | 16.5 | 1 | 1.7 |
| 007P/Pons-Winnecke | 1.258 | 5.59 | 16.3 | 3 | 1.8 |
| 009P/Tempel-1 | 1.500 | 4.69 | 15.6 | 1 | 2.5 |
| 010P/Tempel-2 | 1.482 | 4.74 | 14.9 | 2 | 3.5 |
| 014P/Wolf | 2.413 | 4.17 | 16.2 | 4 | 1.9 |
| 015P/Finlay | 1.034 | 3.65 | 17.2 | 4 | 1.2 |
| 016P/Brooks-2 | 1.835 | 2.66 | 16.6 | 4 | 1.6 |
| 017P/Holmes | 2.165 | 3.74 | 16.6 | 1 | 1.6 |
| 019P/Borrelly | 1.358 | 5.85 | 15.9 | 1 | 2.2 |
| 021P/Giacobini-Zinner | 1.034 | 4.83 | 17.6 | 3 | 1.0 |
| 022P/Kopff | 1.584 | 5.12 | 16.3 | 1 | 1.8 |
| 024P/Schaumasse | 1.205 | 2.75 | 17.8 | 4 | 0.9 |
| 026P/Grigg-Skjellerup | 0.997 | 4.93 | 17.2 | 1 | 1.2 |
| 028P/Neujmin-1 | 1.552 | 12.28 | 12.7 | 1 | 9.6 |
| 029P/Schwassmann-Wachmann-1 | 5.724 | 7.26 | 12.0 | 2 | 13.2 |
| 030P/Reinmuth-1 | 1.878 | 3.78 | 17.6 | 3 | 1.0 |
| 031P/Schwassmann-Wachmann-2 | 3.409 | 4.58 | 15.2 | 2 | 3.0 |
| 032P/Comas-Sola | 1.846 | 3.87 | 15.6 | 3 | 2.5 |
| 033P/Daniel | 2.157 | 3.06 | 17.8 | 4 | 0.9 |
| 036P/Whipple | 3.088 | 5.26 | 16.0 | 1 | 2.1 |
| 037P/Forbes | 1.446 | 3.59 | 17.6 | 2 | 1.0 |
| 039P/Oterma | 5.471 | 5.75 | 15.1 | 4 | 3.2 |
| 040P/Vaisala-1 | 1.783 | 6.01 | 16.5 | 3 | 1.7 |
| 041P/Tuttle-Giacobini-Kresak | 1.052 | 2.32 | 18.4 | 4 | 0.7 |
| 042P/Neujmin-3 | 2.001 | 2.52 | 18.4 | 4 | 0.7 |
| 043P/Wolf-Harrington | 1.582 | 4.87 | 16.0 | 2 | 2.1 |
| 044P/Reinmuth-2 | 1.890 | 5.04 | 16.7 | 3 | 1.5 |
| 045P/Honda-Mrkos-Pajdusakova | 0.528 | 5.14 | 20.0 | 3 | 0.3 |
| 046P/Wirtanen | 1.059 | 4.98 | 18.8 | 1 | 0.6 |
| 047P/Ashbrook-Jackson | 2.305 | 5.33 | 15.5 | 1 | 2.6 |
| 048P/Johnson | 2.308 | 3.98 | 15.9 | 2 | 2.2 |
| 049P/Arend-Rigaux | 1.369 | 4.79 | 14.8 | 1 | 3.6 |
| 050P/Arend | 1.917 | 2.96 | 17.7 | 4 | 1.0 |
| 051P/Harrington | 1.568 | 2.73 | 20.8 | 4 | 0.2 |
| 052P/Harrington-Abell | 1.756 | 3.02 | 17.4 | 4 | 1.1 |
| 053P/Van-Biesbroeck | 2.415 | 8.30 | 15.0 | 1 | 3.3 |
| 055P/Tempel-Tuttle | 0.977 | 6.74 | 16.5 | 1 | 1.7 |
| 056P/Slaughter-Burnham | 2.543 | 7.43 | 16.8 | 1 | 1.5 |
| 058P/Jackson-Neujmin | 1.381 | 2.06 | 18.7 | 4 | 0.6 |
| 059P/Kearns-Kwee | 2.339 | 4.14 | 17.6 | 3 | 1.0 |
| 060P/Tsuchinshan-2 | 1.770 | 2.31 | 18.4 | 4 | 0.7 |
| 061P/Shajn-Schaldach | 2.330 | 4.39 | 18.0 | 2 | 0.8 |
| 063P/Wild-1 | 1.961 | 3.43 | 16.8 | 2 | 1.5 |
| 064P/Swift-Gehrels | 1.339 | 3.63 | 16.3 | 4 | 1.8 |
| 065P/Gunn | 2.446 | 4.73 | 14.3 | 2 | 4.6 |
| 067P/Churyumov-Gerasimenko | 1.292 | 4.98 | 16.0 | 1 | 2.1 |
| 068P/Klemola | 1.755 | 3.87 | 15.6 | 3 | 2.5 |
| 069P/Taylor | 1.948 | 4.89 | 16.0 | 4 | 2.1 |
| 070P/Kojima | 2.003 | 3.77 | 17.1 | 3 | 1.3 |
| 071P/Clark | 1.559 | 4.67 | 18.0 | 2 | 0.8 |
| 073P/Schwassmann-Wachmann-3 | 0.937 | 4.05 | 17.7 | 3 | 1.0 |
| 074P/Smirnova-Chernykh | 3.546 | 4.78 | 15.1 | 3 | 3.2 |
| 075P/Kohoutek | 1.775 | 3.82 | 16.3 | 3 | 1.8 |
| 077P/Longmore | 2.310 | 4.87 | 15.8 | 4 | 2.3 |
| 078P/Gehrels-2 | 2.000 | 5.45 | 16.4 | 3 | 1.7 |
| 079P/Du-Toit-Hartley | 1.199 | 4.74 | 17.2 | 4 | 1.2 |
| 081P/Wild-2 | 1.590 | 4.97 | 16.2 | 2 | 1.9 |
| 082P/Gehrels-3 | 3.627 | 4.08 | 18.1 | 3 | 0.8 |
| 084P/Giclas | 1.846 | 2.21 | 17.5 | 3 | 1.1 |
| 086P/Wild-3 | 2.310 | 4.96 | 19.0 | 2 | 0.5 |
| 087P/Bus | 2.181 | 4.78 | 19.0 | 4 | 0.5 |
| 088P/Howell | 1.406 | 3.67 | 17.7 | 4 | 1.0 |
| 089P/Russell-2 | 2.290 | 3.07 | 17.3 | 4 | 1.2 |
| 090P/Gehrels-1 | 2.966 | 3.65 | 15.5 | 3 | 2.6 |
| 091P/Russell-3 | 2.510 | 3.73 | 17.1 | 4 | 1.3 |
| 092P/Sanguin | 1.807 | 8.56 | 17.2 | 2 | 1.2 |
| 094P/Russell-4 | 2.231 | 4.57 | 16.1 | 3 | 2.0 |
| 096P/Machholz-1 | 0.124 | 5.85 | 14.7 | 4 | 3.8 |
| 097P/Metcalf-Brewington | 2.611 | 4.78 | 16.8 | 4 | 1.5 |
| 098P/Takamizawa | 1.585 | 3.78 | 15.3 | 4 | 2.9 |
| 099P/Kowal-1 | 4.673 | 6.12 | 14.2 | 3 | 4.8 |
| 101P/Chernykh | 2.356 | 4.17 | 15.9 | 3 | 2.2 |
| 104P/Kowal-2 | 1.397 | 3.94 | 16.8 | 4 | 1.5 |
| 105P/Singer-Brewster | 2.032 | 3.02 | 18.0 | 4 | 0.8 |
| 106P/Schuster | 1.550 | 2.19 | 18.0 | 3 | 0.8 |
| 108P/Ciffreo | 1.713 | 2.94 | 18.0 | 3 | 0.8 |
| 109P/Swift-Tuttle | 0.958 | 14.56 | 12.1 | 1 | 12.6 |
| 110P/Hartley-3 | 2.478 | 4.64 | 16.1 | 2 | 2.0 |
| 111P/Helin-Roman-Crockett | 3.473 | 4.56 | 17.3 | 4 | 1.2 |
| 112P/Urata-Niijima | 1.458 | 2.87 | 18.2 | 3 | 0.8 |
| 113P/Spitaler | 2.127 | 4.12 | 17.3 | 3 | 1.2 |
| 114P/Wiseman-Skiff | 1.569 | 2.40 | 17.9 | 3 | 0.9 |
| 115P/Maury | 2.042 | 6.37 | 17.4 | 3 | 1.1 |
| 116P/Wild-4 | 2.170 | 4.78 | 15.0 | 4 | 3.3 |
| 117P/Helin-Roman-Alu-1 | 3.715 | 5.21 | 14.8 | 3 | 3.6 |
| 118P/Shoemaker-Levy-4 | 2.011 | 4.71 | 16.2 | 3 | 1.9 |
| 119P/Parker-Hartley | 3.045 | 5.10 | 16.3 | 3 | 2.6 |
| 120P/Mueller-1 | 2.739 | 3.15 | 18.0 | 4 | 0.8 |
| 121P/Shoemaker-Holt-2 | 2.664 | 5.03 | 16.1 | 4 | 2.0 |
| 122P/De-Vico | 0.659 | 3.84 | 17.0 | 4 | 1.3 |
| 123P/West-Hartley | 2.129 | 5.48 | 16.1 | 3 | 2.0 |
| 124P/Mrkos | 1.467 | 4.94 | 16.4 | 2 | 1.7 |
| 125P/Spacewatch | 1.529 | 3.03 | 18.0 | 3 | 0.8 |
| 128P/Shoemaker-Holt-1 | 3.047 | 4.99 | 16.1 | 3 | 2.0 |
| 129P/Shoemaker-Levy-3 | 2.807 | 4.50 | 16.5 | 4 | 1.7 |
| 130P/McNaught-Hughes | 2.116 | 4.00 | 16.6 | 3 | 1.6 |
| 131P/Mueller-2 | 2.412 | 3.51 | 18.1 | 4 | 0.8 |
| 134P/Kowal-Vavrova | 2.575 | 5.05 | 16.8 | 3 | 1.5 |
| 135P/Shoemaker-Levy-8 | 2.721 | 4.14 | 16.9 | 3 | 1.4 |
| 137P/Shoemaker-Levy-2 | 1.869 | 6.06 | 15.4 | 2 | 2.8 |
| 143P/Kowal-Mrkos | 2.547 | 3.96 | 14.3 | 3 | 4.6 |
| 144P/Kushida | 1.431 | 2.55 | 17.3 | 3 | 1.2 |
| 152P/Helin-Lawrence | 3.110 | 5.84 | 16.0 | 3 | 2.1 |
| 154P/Brewington | 1.590 | 3.26 | 16.5 | 4 | 1.7 |
| P/1995A1(Jedicke) | 4.083 | 5.53 | 15.2 | 3 | 3.0 |
| P/1996A1(Jedicke) | 4.055 | 6.52 | 14.1 | 2 | 5.0 |
| P/1997C1(Gehrels) | 3.565 | 5.45 | 15.6 | 3 | 2.5 |
| P/1997G1(Montani) | 4.214 | 5.72 | 15.5 | 4 | 2.6 |
| P/2002BV(Yeung) | 2.244 | 4.78 | 15.0 | 4 | 3.3 |