This page provides observation hints for currently observable comets. That includes orbital elements, ephemerides, visibility diagrams, comparison star maps, brightness parameters etc.
Important note! The total magnitudes of the ephemerides can deviate more or less from the observed ones. Up-to-date total magnitudes are available under Latest News on our Homepage, up-to-date brightness parameters within Recent Analysis.
Elements & Ephemerides (ICQ)
The brightness parameters are also available as a text file.
| Name / Designation | T | M0_v | n_v | M0_n | n_n | |
| 174P/Echeclus | 20150424.52 | 3.5 | 2.0 | |||
| C/2006 S3 (LONEOS) | 20120414.47 | 5.0 | 3.0 | |||
| C/2009 F4 (McNaught) | 20111231.70 | 3.0 | 4.0 | |||
| C/2009 P1 (Garradd) | 20111224.64 | 4.0 | 4.0 | |||
| C/2009 S3 (Lemmon) | 20111210.34 | 6.5 | 4.0 | |||
| 228P/LINEAR | 20110823.84 | 14.5 | 2.0 | |||
| 213P/Van Ness | 20110616.23 | 10.5 | 4.0 | |||
| C/2008 S3 (Boattini) | 20110605.37 | 6.0 | 3.0 | |||
| 231P/LINEAR-NEAT | 20110516.67 | 11.5 | 4.0 | |||
| C/2010 B1 (Cardinal) | 20110206.89 | 7.5 | 4.0 | |||
| C/2009 Y1 (Catalina) | 20110128.93 | 9.0 | 4.0 | |||
| C/2009 K3 (Beshore) | 20110109.26 | 8.5 | 4.0 | |||
| P/2004 HC18) (LINEAR) | 20101229.57 | 16.5 | 2.0 | |||
| C/2010 A4 (Siding Spring) | 20101007.77 | 10.5 | 4.0 | |||
| P/NEAT ((2002X2)) | 20101004.74 | 12.0 | 4.0 | |||
| C/2008 FK75 (Lemmon-Siding Spring) | 20100929.24 | 5.0 | 4.0 | |||
| 31P/Schwassmann-Wachmann | 20100929.49 | 5.0 | 8.0 | |||
| 227P/Catalina-LINEAR | 20100903.69 | 14.5 | 4.0 | |||
| 223P/Skiff | 20100814.52 | 12.0 | 4.0 | |||
| 2P/Encke | 20100806.50 | 10.5 | 3.0 | 11.5 | 4.5 | |
| P/LINEAR ((1999U3)) | 20100718.46 | 13.5 | 4.0 | |||
| C/2009 U1 (Garradd) | 20100707.81 | 10.5 | 4.0 | |||
| 10P/Tempel | 20100704.90 | 11.3 | 0.015 | 9.5 | 0.012 | |
| C/2009 R1 (McNaught) | 20100702.65 | 8.0 | 4.0 | |||
| 43P/Wolf-Harrington | 20100701.74 | 8.0 | 6.0 | |||
| C/2009 U5 (Grauer) | 20100622.75 | 7.0 | 4.0 | |||
| 215P/NEAT | 20100608.03 | 11.0 | 4.0 | |||
| P/Haneda-Campos | 20100608 | 13.5 | 6.0 | |||
| 142P/Ge-Wang | 20100530.53 | 8.5 | 6.0 | |||
| 141P/Machholz | 20100529.71 | 12.0 | 12.0 | |||
| 104P/Kowal | 20100504.63 | 12.5 | 4.0 | |||
| C/2009 W2 (Boattini) | 20100501.80 | 7.0 | 4.0 | |||
| C/2009 K5 (McNaught) | 20100430.02 | 7.5 | 4.0 | |||
| C/2007 VO53 (Spacewatch) | 20100426.46 | 9.0 | 3.0 | |||
| 30P/Reinmuth | 20100419.54 | 9.5 | 6.0 | |||
| P/2010 A5 (LINEAR) | 20100419.25 | 13.0 | 4.0 | |||
| P/2010 A3 (Hill) | 20100403.68 | 14.0 | 4.0 | |||
| P/2009 Y2 (Kowalski) | 20100330.69 | 13.0 | 4.0 | |||
| 94P/Russell | 20100329.74 | 9.0 | 6.0 | |||
| P/LINEAR-Skiff ((2001R6)) | 20100326.11 | 13.0 | 4.0 | |||
| C/2009 O2 (Catalina) | 20100324.40 | 11.0 | 4.0 | |||
| C/2009 U3 (Hill) | 20100320.25 | 13.0 | 4.0 | |||
| P/2009 WJ50 (La Sagra) | 20100312.39 | 15.0 | 4.0 | |||
| 162P/Siding Spring | 20100308.42 | 12.0 | 4.0 | |||
| 219P/LINEAR | 20100305.73 | 11.5 | 4.0 | |||
| 65P/Gunn | 20100302.13 | 4.5 | 6.0 | 4.0 | 6.0 | |
| P/McNaught ((2004R1)) | 20100223.65 | 18.5 | 4.0 | |||
| 81P/Wild | 20100222.70 | 8.0 | 4.0 | |||
| 126P/IRAS | 20100222.66 | 6.0 | 8.0 | |||
| 157P/Tritton | 20100220.53 | 10.0 | 4.0 | |||
| 149P/Mueller | 20100219.21 | 8.0 | 8.0 | |||
| C/2009 P2 (Boattini) | 20100210.87 | 6.0 | 4.0 | |||
| 203P/Korlevic | 20100208.19 | 14.5 | 2.0 | |||
| C/2009 K2 (Catalina) | 20100207.51 | 10.0 | 4.0 | |||
| 224P/LINEAR-NEAT | 20100131.83 | 15.5 | 4.0 | |||
| P/2009 T2 (La Sagra) | 20100112.84 | 14.0 | 4.0 | |||
| 82P/Gehrels | 20100112.08 | 5.0 | 8.0 | |||
| C/2009 T3 (LINEAR) | 20100112.05 | 12.5 | 4.0 | |||
| 118P/Shoemaker-Levy | 20100102.31 | 10.0 | 4.0 | |||
| C/2009 O4 (Hill) | 20100101.28 | 10.0 | 4.0 | |||
| P/2010 B2 (WISE) | 20091221.79 | 17.0 | 4.0 | |||
| 220P/McNaught | 20091215.43 | 15.0 | 4.0 | |||
| 100P/Hartley | 20091206.14 | 9.0 | 8.0 | |||
| P/2010 A2 (LINEAR) | 20091203.87 | 15.5 | 4.0 | |||
| P/2010 C1 (Scotti) | 20091201.27 | 9.5 | 4.0 | |||
| 169P/NEAT | 20091130.30 | 16.0 | 2.0 | |||
| 54P/de Vico-Swift-NEAT | 20091128.50 | 12.5 | 6.0 | |||
| P/2009 Q4 (Boattini) | 20091119.92 | 15.5 | 4.0 | |||
| C/2009 F2 (McNaught) | 20091114.29 | 6.0 | 4.0 | |||
| 88P/Howell | 20091012.47 | 2.4 | 15.5 | |||
| P/2009 QG31 (La Sagra) | 20091010.42 | 14.0 | 4.0 | |||
| C/2009 T1 (McNaught) | 20091008.49 | 6.5 | 4.0 | |||
| 127P/Holt-Olmstead | 20091008 | 11.5 | 7.5 | |||
| C/2007 Q3 (Siding Spring) | 20091007.27 | 6.2 | 1.8 | |||
| 232P/Hill | 20091001.50 | 11.5 | 4.0 | |||
| C/2008 N1 (Holmes) | 20090925.91 | 9.0 | 4.0 | |||
| P/2009 U4 (McNaught) | 20090909.09 | 14.0 | 4.0 | |||
| 217P/LINEAR | 20090908.96 | 9.6 | 7.5 | 10.4 | 3.0 | |
| P/2009 Q5 (McNaught) | 20090908.61 | 10.0 | 4.0 | |||
| 222P/LINEAR | 20090901.09 | 16.0 | 4.0 | |||
| 225P/LINEAR | 20090825.53 | 18.0 | 4.0 | |||
| 24P/Schaumasse | 20090809.62 | 7.0 | 12.0 | |||
| 230P/LINEAR | 20090808.82 | 13.0 | 4.0 | |||
| P/2010 A1 (Hill) | 20090806.90 | 13.0 | 4.0 | |||
| 229P/Gibbs | 20090804.17 | 13.0 | 4.0 | |||
| 74P/Smirnova-Chernykh | 20090730.33 | 5.0 | 6.0 | |||
| 89P/Russell 2 | 20090726.42 | 10.0 | 5.5 | |||
| C/2008 P1 (Garradd) | 20090722.91 | 7.0 | 4.0 | |||
| 116P/Wild 4 | 20090718.86 | 8.5 | 0.020 | |||
| 77P/Longmore | 20090707.84 | 5.0 | 8.0 | |||
| C/2006 W3 (Christensen) | 20090706.66 | -0.6 | 5.8 | |||
| P/2009 Q1 (Hill) | 20090704.07 | 11.5 | 4.0 | |||
| P/2009 K1 (Gibbs) | 20090625.90 | 17.0 | 4.0 | |||
| C/2009 F1 (Larson) | 20090625.89 | 15.0 | 4.0 | |||
| P/2009 S2 (McNaught) | 20090623.63 | 14.0 | 4.0 | |||
| C/2008 Q3 (Garradd) | 20090623.09 | -0.3 | 11.5 | |||
| 218P/LINEAR | 20090622.28 | 16.0 | 4.0 | |||
| P/Tritton | 20090621.16 | 12.5 | 6.0 | |||
| C/2009 K4 (Gibbs) | 20090619.37 | 13.0 | 4.0 | |||
| 64P/Swift-Gehrels | 20090614.35 | 8.5 | 12.0 | |||
| C/2008 T2 (Cardinal) | 20090613.24 | 6.0 | 5.8 | |||
| 22P/Kopff | 20090525.42 | 4.4 | 9.0 | 9.4 | 1.8 | |
| C/2009 SK280 (Spacewatch-Hill) | 20090525.25 | 11.0 | 4.0 | |||
| P/2009 L2 (Yang-Gao) | 20090521.74 | 14.0 | 4.0 | |||
| P/2009 O3 (Hill) | 20090518.63 | 12.5 | 4.0 | |||
| 226P/Pigott-LINEAR-Kowalski | 20090511.22 | 12.5 | 4.0 | |||
| 211P/Hill | 20090507.77 | 12.0 | 4.0 | |||
| C/2009 F6 (Yi-SWAN) | 20090507.43 | 8.5 | -0.05 | 8.5 | 0.05 | |
| P/2008 O2 (McNaught) | 20090421.75 | 9.0 | 4.0 | |||
| C/2009 G1 (STEREO) | 20090416.50 | 7.9 | 2.8 | |||
| 209P/LINEAR | 20090415.97 | 17.0 | 2.0 | |||
| 199P/Shoemaker | 20090409.81 | 10.0 | 4.0 | |||
| C/2009 E1 (Itagaki) | 20090407.92 | 12.4 | 9.0 | 9.2 | 3.4 | |
| P/2008 J3 (McNaught) | 20090310.73 | 11.5 | 4.0 | |||
| 59P/Kearns-Kwee | 20090307.64 | 7.0 | 6.0 | |||
| C/2009 B2 (LINEAR) | 20090307.39 | 12.5 | 4.0 | |||
| 67P/Churyumov-Gerasimenko | 20090228.36 | 6.7 | 9.5 | |||
| 14P/Wolf | 20090227.25 | 6.5 | 8.0 | |||
| P/2008 Y1 (Boattini) | 20090225.08 | 15.0 | 4.0 | |||
| 202P/Scotti | 20090207.01 | 13.0 | 4.0 | |||
| P/2009 B1 (Boattini) | 20090206.24 | 13.0 | 4.0 | |||
| 47P/Ashbrook-Jackson | 20090131.97 | 1.0 | 11.2 | |||
| 144P/Kushida | 20090126.86 | -2.5 | 30.0 | 5.9 | 8.5 | |
| 221P/LINEAR | 20090124.88 | 14.5 | 4.0 | |||
| P/2008 WZ96 (LINEAR) | 20090123.94 | 14.5 | 4.0 | |||
| P/2008 Y2 (Gibbs) | 20090122.40 | 16.5 | 4.0 | |||
| 195P/Hill | 20090121.09 | 8.5 | 4.0 | |||
| 68P/Klemola | 20090120.97 | 8.5 | 6.5 | |||
| C/2008 G1 (Gibbs) | 20090112.00 | 10.5 | 3.0 | |||
| P/2008 Y3 (McNaught) | 20090111.93 | 10.0 | 3.0 | |||
| C/2007 N3 (LULIN) | 20090110.64 | 5.4 | 4.1 | |||
| 214P/LINEAR | 20090105.61 | 13.0 | 4.0 | |||
| C/2008 Q1 (Maticic) | 20081230.13 | 10.0 | 4.0 | |||
| 57P/du Toit-Neujmin-Delporte | 20081225.98 | 12.5 | 6.0 | |||
| P/2008 T4 (Hill) | 20081223.91 | 13.5 | 4.0 | |||
| 210P/Christensen | 20081219.97 | 13.5 | 4.0 | |||
| 204P/LINEAR-NEAT | 20081209.27 | 14.0 | 4.0 | |||
| C/2007 M2 (Catalina) | 20081208.59 | 8.0 | 4.0 | |||
| 212P/NEAT | 20081203.26 | 17.5 | 4.0 | |||
| C/2008 R3 (LINEAR) | 20081122.48 | 13.0 | 4.0 | |||
| C/2007 G1 (LINEAR) | 20081116.31 | 5.5 | 4.0 | |||
| 207P/NEAT | 20081106.25 | 16.0 | 4.0 | |||
| C/2009 F5 (McNaught) | 20081104.80 | 10.0 | 4.0 | |||
| P/2008 QP20 (LINEAR-Hill) | 20081102.70 | 15.5 | 4.0 | |||
| 206P/Barnard-Boattini | 20081025.09 | 19.0 | 4.0 | |||
| P/2008 Q2 (Ory) | 20081019.00 | 16.5 | 4.0 | |||
| 216P/LINEAR | 20081010.97 | 13.0 | 4.0 | |||
| C/2008 X3 (LINEAR) | 20081010.57 | 13.0 | 4.0 | |||
| 187P/LINEAR | 20081006.30 | 13.5 | 4.0 | |||
| P/2008 S1 (Catalina-McNaught) | 20081001.83 | 15.0 | 4.0 | |||
| C/2008 A1 (McNaught) | 20080929.12 | 5.8 | 3.2 | |||
| 7P/Pons-Winnecke | 20080926.63 | 8.5 | 6.0 | |||
| C/2007 S2 (Lemmon) | 20080918.71 | 6.5 | 4.0 | |||
| C/2006 OF2 (Broughton) | 20080915.68 | 9.5 | 0.004 | 8.0 | 0.008 | |
| 205P/Giacobini | 20080910.06 | 13.5 | 0.0 | |||
| 61P/Shajn-Schaldach | 20080906.07 | 6.0 | 10.0 | |||
| 200P/Larsen | 20080825.17 | 12.0 | 4.0 | |||
| C/2007 B2 (Skiff) | 20080820.87 | 6.0 | 4.0 | |||
| P/2008 L2 (Hill) | 20080818.61 | 12.5 | 4.0 | |||
| 6P/d'Arrest | 20080814.95 | 11.7 | 0.146 | 8.4 | 0.017 | |
| C/2007 M1 (McNaught) | 20080811.35 | 6.0 | 4.0 | |||
| C/2008 E1 (Catalina) | 20080811.28 | 7.0 | 4.0 | |||
| C/2007 U1 (LINEAR) | 20080807.06 | 6.5 | 4.0 | |||
| 201P/LONEOS | 20080804.75 | 14.0 | 4.0 | |||
| C/2008 E3 (Garradd) | 20080802.11 | 6.0 | 4.0 | |||
| P/2008 R1 (Garradd) | 20080725.30 | 15.5 | 4.0 | |||
| 19P/Borrelly | 20080722.34 | 5.0 | 8.2 | |||
| 33P/Daniel | 20080720.34 | 10.5 | 8.0 | |||
| C/2008 J1 (Boattini) | 20080713.26 | 1.4 | 14.0 | 4.1 | 8.5 | |
| C/2006 Q1 (McNaught) | 20080703.85 | 4.7 | 4.2 | |||
| C/2007 W1 (Boattini) | 20080624.88 | 8.6 | 4.0 | |||
| 15P/Finlay | 20080622.56 | 10.0 | 4.0 | |||
| C/2008 J4 (McNaught) | 20080619.50 | 15.0 | 4.0 | |||
| 51P/Harrington | 20080618.39 | 10.5 | 8.0 | |||
| P/2008 A2 (LINEAR) | 20080612.03 | 15.5 | 4.0 | |||
| C/2006 U6 (Spacewatch) | 20080605.47 | 8.0 | 4.0 | |||
| P/2008 O3 (Boattini) | 20080603.21 | 13.0 | 4.0 | |||
| C/2007 W3 (LINEAR) | 20080602.81 | 12.0 | 4.0 | |||
| 79P/du Toit-Hartley | 20080528.42 | 16.0 | 4.0 | |||
| 180P/NEAT | 20080526.70 | 11.0 | 4.0 | |||
| C/2007 T5 (Gibbs) | 20080524.17 | 8.0 | 4.0 | |||
| 148P/Anderson-LINEAR | 20080522.73 | 14.0 | 4.0 | |||
| 197P/LINEAR | 20080519.01 | 18.0 | 4.0 | |||
| 173P/Mueller | 20080518.52 | 7.5 | 4.0 | |||
| 208P/McMillan | 20080513.23 | 13.0 | 4.0 | |||
| 183P/Korlevic-Juric | 20080508.79 | 11.0 | 4.0 | |||
| C/2008 L3 (Hill) | 20080422.36 | 14.0 | 4.0 | |||
| C/2007 K3 (Siding Spring) | 20080421.68 | 9.5 | 4.0 | |||
| 139P/Väisälä-Oterma | 20080419.34 | 12.0 | 2.0 | |||
| C/2008 C1 (Chen-Gao) | 20080416.84 | 6.1 | 11.0 | |||
| 16P/Brooks 2 | 20080412.59 | 7.5 | 10.0 | |||
| C/2008 J6 (Hill) | 20080410.94 | 10.5 | 4.0 | |||
| C/2007 Y2 (McNaught) | 20080408.42 | 9.0 | 4.0 | |||
| C/2008 J5 (Garradd) | 20080401.04 | 12.0 | 4.0 | |||
| 26P/Grigg-Skjellerup | 20080323.68 | 12.0 | 6.0 | 12.5 | 4.0 | |
| P/2008 J2 (Beshore) | 20080320.84 | 9.0 | 4.0 | |||
| 186P/Garradd | 20080320.50 | 7.5 | 4.0 | |||
| C/2007 Y1 (LINEAR) | 20080319.32 | 10.5 | 4.0 | |||
| C/2008 H1 (LINEAR) | 20080316.39 | 10.5 | 4.0 | |||
| P/2008 T1 (Boattini) | 20080226.33 | 11.0 | 4.0 | |||
| 194P/LINEAR | 20080226.19 | 15.5 | 4.0 | |||
| 193P/LINEAR-NEAT | 20080220.49 | 14.0 | 4.0 | |||
| P/2006 F1 (Kowalski) | 20080219.77 | 8.0 | 4.0 | |||
| 44P/Reinmuth 2 | 20080218.25 | 8.5 | 6.0 | |||
| P/2006 VQ11 (Catalina) | 20080213.55 | 12.0 | 4.0 | |||
| 196P/Tichy | 20080207.15 | 13.5 | 4.0 | |||
| 110P/Hartley | 20080203.48 | 11.0 | 6.0 | |||
| 46P/Wirtanen | 20080202.49 | 8.3 | 9.0 | 8.6 | 5.8 | |
| 8P/Tuttle | 20080127.02 | 8.0 | 7.7 | 7.3 | 3.2 | |
| C/2005 L3 (McNaught) | 20080116.00 | 4.0 | 3.0 | |||
| 29P/Schwassmann-Wachmann | 20040709.14 | 4.0 | 4.0 | |||
| 8P/Tuttle | 20080127.02 | 8.0 | 7.7 | 7.3 | 3.2 | |
| 93P/Lovas | 20071217.34 | 8.8 | 7.0 | |||
| C/2007 T1 (McNaught) | 20071212.52 | 7.8 | 9.0 | 7.5 | 4.5 | |
| C/2007 F1 (LONEOS) | 20071028.75 | 8.2 | 2.4 | |||
| C/2006 VZ13 (LINEAR) | 20070810.89 | 8.2 | 4.7 | |||
| C/2007 E1 (Garradd) | 20070523.83 | 7.5 | 8.0 | |||
| 2P/Encke | 20070419.31 | 10.3 | 3.1 | 11.8 | 5.0 | |
| 96P/Machholz | 20070404.62 | 12.0 | 4.2 | |||
| C/2007 E2 (Lovejoy) | 20070327.51 | 8.9 | 3.4 | |||
| C/2006 P1 (McNaught) | 20070112.79 | 6.2 | 4.8 | 4.2 | 4.5 | |
| P/2006 HR30 (Siding Spring) | 20070102.28 | 14.0 | 0.0 | |||
| C/2006 L2 (McNaught) | 20061120.19 | 4.0 | 7.0 | |||
| 4P/Faye | 20061115.44 | 4.2 | 11.5 | 8.5 | 3.8 | |
| C/2006 L1 (Garradd) | 20061018.00 | 6.9 | 5.8 | |||
| P/2006 T1 (Levy) | 20061007.42 | 9.2 | 28.0 | |||
| C/2006 M4 (SWAN) | 20060928.72 | 6.5 | 4.0 | 5.5 | 5.5 | |
| 177P/Barnard | 20060828.68 | 8.9 | 9.0 | |||
| 41P/Tuttle-Giacobini-Kresak | 20060611.80 | 9.3 | 15.0 | 9.6 | 8.0 | |
| 73P/Schwassmann-Wachmann (B) | 20060607.92 | 11.5 | 4.6 | |||
| 73P/Schwassmann-Wachmann (C) | 20060606.94 | 11.3 | 3.4 | 11.4 | 5.4 | |
| 71P/Clark | 20060606.80 | 12.3 | 0.025 | 10.7 | 0.020 | |
| C/2003 WT42 (LINEAR) | 20060410.76 | 2.8 | 4.0 | |||
| C/2005 E2 (McNaught) | 20060223.47 | 6.8 | 3.5 | |||
| C/2006 A1 (Pojmanski) | 20060222.18 | 8.5 | 4.5 | 7.8 | 3.6 | |
| C/2004 B1 (LINEAR) | 20060207.88 | 11.5 | 0.0 | |||
| C/2005 N1 (Juels-Holvorcem) | 20050822.04 | 9.6 | 5.5 | 10.0 | 3.0 | |
| C/2005 P3 (SWAN) | 20050809.74 | 11.1 | 3.7 | |||
| 37P/Forbes | 20050801.75 | 9.8 | 6.0 | |||
| C/2005 K2 (LINEAR) | 20050705.39 | 12.0 | 4.0 | |||
| 9P/Tempel 1 | 20050705.31 | 6.4 | 9.7 | |||
| 21P/Giacobini-Zinner | 20050702.76 | 9.0 | 6.0 | |||
| 161P/Hartley-IRAS | 20050620.84 | 9.4 | 2.2 | |||
| C/2005 A1 (LINEAR) | 20050410.22 | 8.2 | 5.4 | 8.0 | 3.5 | |
| C/2003 T4 (LINEAR) | 20050403.64 | 7.9 | 2.5 | |||
| 32P/Comas Sola | 20050401.33 | 9.1 | 3.8 | |||
| C/2004 Q2 (Machholz) | 20050124.91 | 5.1 | 4.0 | 5.3 | 3.4 | |
| C/2004 V1 (SWAN) | 20041221.15 | 12.0 | 4.0 | 13.8 | 3.2 | |
| 62P/Tsuchinshan 1 | 20041207.91 | 8.5 | 8.0 | |||
| C/2004 Q1 (Tucker) | 20041206.86 | -0.7 | 13.5 | 8.1 | 2.5 | |
| 78P/Gehrels 2 | 20041027.06 | 11.0 | 0.011 | 10.1 | 0.008 | |
| C/2003 K4 (LINEAR) | 20041013.71 | 3.1 | 5.5 | 5.8 | 2.4 | |
| C/2004 R2 (ASAS) | 20041007.89 | 6.8 | 0.105 | |||
| C/2001 Q4 (NEAT) | 20040515.96 | 5.5 | 2.3 | 5.7 | 2.9 | |
| C/2004 H6 (SWAN) | 20040512.68 | 5.3 | 0.073 | |||
| C/2003 T3 (Tabur) | 20040429.00 | 6.6 | 2.6 | 6.4 | 3.6 | |
| C/2002 T7 (LINEAR) | 20040423.06 | 4.3 | 3.7 | 6.1 | 3.0 | |
| C/2004 F4 (Bradfield) | 20040417.09 | 8.3 | 3.4 | |||
| 88P/Howell | 20040412.56 | 6.0 | 10.0 | 6.9 | 6.5 | |
| 43P/Wolf-Harrington | 20040318.78 | 6.5 | 8.0 | |||
| C/2003 H1 (LINEAR) | 20040222.61 | 7.3 | 4.5 | |||
| 2P/Encke | 20031229.87 | 5.6 | 0.117 | |||
| C/2002 O7 (LINEAR) | 20030922.56 | 10.1 | 1.4 | |||
| C/2001 HT50 (LINEAR-NEAT) | 20030709.01 | 8.3 | 1.3 | |||
| 65P/Gunn | 20030511.86 | 9.2 | 2.0 | |||
| C/2002 Y1 (Juels-Holvorcem) | 20030413.24 | 6.8 | 4.9 | 4.8 | 0.044 | |
| C/2002 V1 (NEAT) | 20030218.29 | 7.0 | 3.0 | 5.8 | 2.5 | |
| C/2002 X5 (Kudo-Fujikawa) | 20030129.00 | 7.1 | 2.0 | 8.4 | 3.3 | |
| 116P/Wild 4 | 20030121.58 | 9.5 | 2.0 | |||
| C/2001 RX14 (LINEAR) | 20030118.69 | 9.5 | 1.0 | |||
| 30P/Reinmuth | 20021224.39 | 10.3 | 4.0 | |||
| C/2001 K5 (LINEAR) | 20021011.76 | 2.5 | 4.0 | |||
| C/2002 O4 (Hönig) | 20021001.98 | 8.5 | 2.0 | |||
| 92P/Sanguin | 20020923.05 | 10.7 | 4.6 | |||
| C/2002 O6 (SWAN) | 20020909.44 | 9.2 | 2.0 | |||
| 46P/Wirtanen | 20020826.74 | 9.0 | 3.0 | |||
| C/2000 SV74 (LINEAR) | 20020430.47 | 6.5 | 2.6 | |||
| C/2002 F1 (Utsunomiya) | 20020422.89 | 9.7 | 6.1 | 8.0 | 4.3 | |
| C/2002 H2 (LINEAR) | 20020323.41 | 10.8 | 2.0 | |||
| 153P/Ikeya-Zhang | 20020318.97 | 7.0 | 4.0 | 6.2 | 2.8 | |
| C/2001 OG108 (LONEOS) | 20020315.20 | 10.0 | 3.0 | 10.5 | 6.0 | |
| C/2002 E2 (Snyder-Murakami) | 20020221.78 | 7.5 | 4.7 | |||
| C/2000 WM1 (LINEAR) | 20020122.67 | 7.6 | 3.0 | 6.3 | 5.6 | |
| P/2001 MD7 (LINEAR) | 20011130.13 | 12.1 | 1.0 | |||
| P/2001 Q6 (NEAT) | 20011109.46 | 8.5 | 8.0 | |||
| 19P/Borrelly | 20010914.73 | 4.4 | 14.0 | 7.0 | 6.5 | |
| P/2001 Q2 (Petriew) | 20010901.92 | 10.5 | 12.0 | |||
| C/2001 A2 (LINEAR) | 20010524.52 | 7.6 | 6.0 | 7.1 | 4.3 | |
| 24P/Schaumasse | 20010502.65 | 7.7 | 10.5 | |||
| C/1999 Y1 (LINEAR) | 20010324.11 | 7.8 | 2.0 | |||
| C/2000 W1 (Utsunomiya-Jones) | 20001226.55 | 10.2 | 3.9 | 11.0 | 4.0 | |
| C/1999 T1 (McNaught-Hartley) | 20001213.47 | 6.2 | 3.6 | |||
| C/1999 T2 (LINEAR) | 20001124.46 | 9.2 | 1.2 | |||
| C/1999 S4 (LINEAR) | 20000726.17 | 9.0 | 1.9 | 8.3 | 0.20 | |
| C/1999 K8 (LINEAR) | 20000424.30 | 0.5 | 6.2 | |||
| C/1999 J2 (Skiff) | 20000405.98 | 1.5 | 4.0 | |||
| C/1999 L3 (LINEAR) | 20000104.90 | 6.5 | 6.0 | |||
| 106P/Schuster | 19991216.22 | 11.5 | 4.0 | |||
| 141P-A/Machholz | 19991209.95 | 14.8 | 9.0 | 13.1 | 5.7 | |
| C/1999 S3 (LINEAR) | 19991109.00 | 11.6 | 0.015 | 8.6 | 4.1 | |
| C/1999 J3 (LINEAR) | 19990920.16 | 8.8 | 5.8 | 8.8 | 1.8 | |
| 10P/Tempel 2 | 19990908.42 | 9.9 | 0.028 | 9.9 | 0.007 | |
| C/1999 H3 (LINEAR) | 19990818.23 | 10.1 | 0.009 | 10.3 | 0.004 | |
| C/1999 N2 (Lynn) | 19990723.05 | 8.0 | 0.009 | 7.0 | 0.04 | |
| C/1999 H1 (Lee) | 19990711.17 | 6.5 | 4.3 | |||
| C/1998 T1 (LINEAR) | 19990625.25 | 9.0 | 2.2 | |||
| 37P/Forbes | 19990504.18 | 10.2 | 5.0 | 8.5 | 7.0 | |
| P/1998 U3 (Jäger) | 19990310.07 | 4.9 | 6.1 | |||
| 52P/Harrington-Abell | 19990127.87 | 11.2 | 0.0 | 11.3 | 0.008 | |
| C/1998 M5 (LINEAR) | 19990124.57 | 6.2 | 3.7 | |||
| C/1998 U5 (LINEAR) | 19981221.76 | 8.2 | 6.0 | 8.7 | 3.7 | |
| 21P/Giacobini-Zinner | 19981121.31 | 8.7 | 6.2 | 9.7 | 3.6 | |
| C/1998 P1 (Williams) | 19981017.84 | 6.5 | 3.0 | 7.3 | 2.8 | |
| 93P/Lovas 1 | 19981014.14 | 12.7 | 0.0 | |||
| 88P/Howell | 19980927.17 | 5.8 | 11.0 | 7.7 | 4.2 | |
| C/1998 M2 (LINEAR) | 19980813.17 | 12.3 | 0.0 | |||
| C/1998 K5 (LINEAR) | 19980717.44 | 15.3 | 0.042 | 15.0 | 0.000 | |
| C/1998 J1 (SOHO) | 19980508.61 | 6.4 | 2.6 | |||
| C/1998 H1 (Stonehouse) | 19980414.40 | 10.6 | 1.8 | |||
| C/1997 J2 (Meunier-Dupouy) | 19980310.44 | 4.6 | 3.1 | 3.4 | 4.3 | |
| 104P/Kowal 2 | 19980302.16 | 10.4 | 3.2 | |||
| 55P/Tempel-Tuttle | 19980228.09 | 8.4 | 10.5 | |||
| 103P/Hartley 2 | 19971222.01 | 8.7 | 9.0 | 8.6 | 3.7 | |
| 69P/Taylor | 19971212.26 | 11.0 | 0.0 | |||
| C/1997 T1 (Utsunomiya) | 19971210.17 | 6.8 | 6.0 | |||
| C/1997 D1 (Mueller) | 19971011.61 | 7.5 | 2.7 | 11.2 | 0.0 | |
| 43P/Wolf-Harrington | 19970929.21 | 7.3 | 7.5 | |||
| 78P/Gehrels 2 | 19970807.04 | 10.5 | 0.003 | |||
| 65P/Gunn | 19960724.39 | 5.0 | 6.0 | 4.0 | 6.0 | |
| 81P/Wild 2 | 19970506.62 | 6.4 | 6.2 | |||
| C/1997 J1 (Mueller) | 19970503.71 | 6.5 | 4.0 | |||
| C/1995 O1 (Hale-Bopp) | 19970401.13 | -0.65 | 3.15 | -1.0 | 3.7 | |
| 46P/Wirtanen | 19970314.15 | 8.0 | 11.5 | 8.5 | 3.5 | |
| 118P/Shoemaker-Levy 4 | 19970112.11 | 10.2 | 2.0 | |||
| C/1996 Q1 (Tabur) | 19961103.52 | 7.3 | 4.0 | 9.0 | 0.075 | |
| 116P/Wild 4 | 19960831.23 | 7.8 | 0.017 | 7.8 | 0.017 | |
| C/1996 R1 (Hergenrother-Spahr) | 19960828.73 | 7.0 | 6.0 | |||
| C/1996 N1 (Brewington) | 19960803.42 | 9.5 | 6.3 | 8.5 | 6.2 | |
| 22P/Kopff | 19960702.19 | 6.6 | 5.6 | |||
| C/1996 B2 (Hyakutake) | 19960501.39 | 5.2 | 3.3 | |||
| C/1995 Y1 (Hyakutake) | 19960224.28 | 7.4 | 4.5 | |||
| C/1996 B1 (Szczepanski) | 19960206.91 | 7.1 | 5.6 | |||
| 67P/Churyumov-Gerasimenko | 19960117.65 | 10.7 | 0.025 | 10.4 | 0.002 | |
| 45P/Honda-Mrkos-Pajdusakova | 19951225.98 | 11.5 | 4.8 | 11.4 | 2.0 | |
| 58P/Jackson-Neujmin | 19951006.60 | 14.3 | 0.02 | 10.5 | 0.00 | |
| 122P/de Vico | 19951006.02 | 7.4 | 4.2 | |||
| 73P/Schwassmann-Wachmann 3 | 19950922.89 | 7.0 | 0.1 | 5.7 | 2.7 | |
| C/1995 Q1 (Bradfield) | 19950831.41 | 7.5 | 3.0 | |||
| 6P/d'Arrest | 19950727.31 | 10.2 | 0.14 | 8.6 | 0.02 | |
| P/Borrelly (1994l) | 19941101.49 | 5.8 | 9.8 | 7.2 | 5.6 | |
| P/Machholz 2 - A (1994o) | 19940918.80 | 6.5 | 0.15 | 9.2 | 0.045 | |
| P/Machholz 2 - D (1994o) | 19940918.80 | 11.0 | 0.20 | 8.5 | 0.125 | |
| Nakamura-Nishimura-Machholz (1994m) | 19940712.94 | 7.8 | 7.0 | |||
| P/Tempel 1 (1993c) | 19940703.30 | 5.9 | 8.6 | |||
| Takamizawa (1994i) | 19940629.63 | 9.1 | 0.010 | |||
| Takamizawa-Levy (1994f) | 19940522.53 | 7.1 | 3.5 | |||
| McNaught-Russell (1993v) | 19940331.09 | 8.8 | 2.4 | |||
| P/Encke | 19940209.47 | 9.8 | 2.9 | 11.4 | 4.4 | |
| P/Schwassmann-Wachmann 2 | 19940123.90 | 10.8 | 0.012 | 10.3 | 0.012 | |
| Mueller (1993a) | 19940112.88 | 5.0 | 3.3 | |||
| P/Schaumasse (1992x) | 19930303.96 | 7.1 | 13.1 | 8.9 | 4.4 | |
| P/Swift-Tuttle (1992t) | 19921212.32 | 4.5 | 7.1 | 4.4 | 6.0 | |
| Shoemaker-Levy (1991a1) | 19920724.50 | 8.2 | 2.2 | |||
| Tanaka-Machholz (1992d) | 19920422.69 | 5.8 | 4.0 | |||
| Mueller (1991h1) | 19920321.20 | 10.1 | 4.7 | |||
| Zanotta-Brewington (1991g1) | 19920131.99 | 8.9 | 2.0 | 10.1 | 3.9 | |
| P/Faye (1991n) | 19911116.19 | 4.8 | 11.2 | |||
| P/Wirtanen (1991s) | 19910920.68 | 8.4 | 6.2 | |||
| P/Hartley 2 (1991t) | 19910911.65 | 8.6 | 6.2 | 8.3 | 7.0 | |
| P/Levy (1991q) | 19910708.19 | 7.6 | 3.7 | |||
| P/Metcalf-Brewington (1991a) | 19910105.61 | 7.1 | 0.053 | |||
| P/Encke (1990XXI) | 19901028.56 | 9.6 | 2.1 | |||
| Levy (1990c) | 19901024.68 | 4.97 | 2.35 | 5.0 | 3.2 | |
| Tsuchiya-Kiuchi (1990i) | 19900928.74 | 5.7 | 3.8 | |||
| P/Honda-Mrkos-Pajdusakova (1990f) | 19900912.68 | 13.6 | 8.5 | 10.0 | 3.0 | |
| Skorichenko-George (1989e1) | 19900411.92 | 6.7 | 0.015 | |||
| Austin (1989c1) | 19900409.96 | 4.5 | 0.034 | 8.1 | 3.3 | |
| Cernis-Kiuchi-Nakamura (1990b) | 19900317.32 | 6.5 | 15.0 | |||
| Aarseth-Brewington (1989a1) | 19891227.88 | 7.5 | 3.5 | |||
| Helin-Roman-Alu (1989v) | 19891215.94 | 10.2 | 5.1 | |||
| Okazaki-Levy-Rudenko (1989r) | 19891111.91 | 7.3 | 2.3 | 8.3 | 3.2 | |
| P/Brorsen-Metcalf (1989o) | 19890911.93 | 8.0 | 3.2 | |||
| Yanaka (1988r) | 19881211.65 | 12.6 | 5.0 | |||
| Machholz (1988j) | 19880917.56 | 8.0 | 2.2 | |||
| P/Tempel 2 (1987g) | 19880916.73 | 7.7 | 0.092 | 8.4 | 0.006 | |
| Liller (1988a) | 19880331.11 | 6.4 | 3.6 | 5.5 | 3.0 | |
| P/Borrelly (1987p) | 19871218.32 | 6.2 | 8.5 | 6.8 | 6.5 | |
| McNaught (1987b1) | 19871211.94 | 5.8 | 6.0 | 5.2 | 4.9 | |
| Bradfield (1987s) | 19871107.27 | 6.0 | 2.7 | |||
| Rudenko (1987u) | 19871009.52 | 8.5 | 3.6 | |||
| Wilson (1986l) | 19870420.78 | 5.3 | 3.0 | 6.0 | 2.0 | |
| Nishikawa-Takamizawa-Tago (1987c) | 19870317.34 | 6.1 | 5.7 | |||
| Sorrells (1986n) | 19870309.65 | 4.5 | 5.5 | |||
| Terasako (1987d) | 19861224.87 | 6.7 | 4.0 | |||
| P/Machholz (1986e) | 19860423.51 | 12.9 | 4.7 | |||
| P/Halley (1982i) | 19860209.45 | 2.2 | 0.063 | 3.7 | 3.0 | |
| P/Boethin (1985n) | 19860116.45 | 6.8 | 5.5 | |||
| Thiele (1985m) | 19851219.21 | 6.0 | 7.0 | |||
| Hartley-Good (1985l) | 19851209.11 | 8.1 | 3.3 | 8.7 | 4.2 | |
| P/Giacobini-Zinner (1984e) | 19850905.20 | 8.8 | 5.4 | 9.6 | 5.6 | |
| Machholz (1985e) | 19850628.73 | 8.2 | 1.2 | |||
| Levy-Rudenko (1984t) | 19841214.25 | 8.0 | 3.0 | |||
| P/Schaumasse (1984m) | 19841206.48 | 7.8 | 5.0 | |||
| Austin (1984i) | 19840812.13 | 7.6 | 3.6 | |||
| P/Takamizawa (1984j) | 19840524.95 | 10.0 | 4.0 | |||
| P/Encke (1984VI) | 19840327.68 | 9.1 | 2.5 | |||
| P/Crommelin (1983n) | 19840220.17 | 10.3 | 6.5 | 9.4 | 4.5 | |
| P/Hartley-IRAS (1983v) | 19840108.70 | 7.5 | 4.0 | 6.0 | 4.0 | |
| P/Kopff (1982k) | 19830810.29 | 2.9 | 10.5 | |||
| Cernis (1983l) | 19830721.21 | 2.5 | 4.0 | |||
| P/Tempel 1 (1982j) | 19830709.79 | 5.5 | 9.0 | |||
| P/Tempel 2 (1982d) | 19830601.53 | 8.9 | 0.048 | 7.6 | 0.024 | |
| IRAS-Araki-Alcock (1983d) | 19830521.25 | 9.7 | 4.0 | |||
| Sugano-Saigusa-Fujikawa (1983e) | 19830501.32 | 11.5 | 6.0 | |||
| P/Churyumov-Gerasimenko (1982f) | 19821112.09 | 11.7 | 0.017 | 11.4 | 0.008 | |
| P/d'Arrest (1982e) | 19820914.26 | 10.0 | 0.071 | 8.3 | 0.000 | |
| Austin (1982g) | 19820824.72 | 8.0 | 3.3 | 7.6 | 3.2 | |
| Bowell (1980b) | 19820312.29 | 1.8 | 4.0 | 3.4 | 4.0 | |
| P/Swift-Gehrels (1981j) | 19811127.45 | 11.3 | 0.045 | |||
| P/Borrelly (1981i) | 19810220.00 | 7.0 | 4.5 | |||
| Panther (1980u) | 19810127.32 | 6.5 | 1.5 | |||
| Bradfield (1980t) | 19801229.54 | 6.9 | 3.0 | |||
| P/Tuttle (1980h) | 19801214.70 | 8.4 | 5.5 | |||
| P/Encke (1980XI) | 19801206.57 | 11.0 | 4.0 | |||
| P/Stephan-Oterma (1980g) | 19801205.16 | 4.6 | 10.0 | |||
| Bradfield (1979l) | 19791221.59 | 8.4 | 5.2 | |||
| Meier (1979i) | 19791017.34 | 9.5 | 4.0 | |||
| Bradfield (1979c) | 19790723.26 | 11.0 | 5.5 | |||
| Meier (1978f) | 19781111.40 | 2.5 | 5.0 | |||
| P/Ashbrook-Jackson (1977g) | 19780819.87 | 7.0 | 4.0 | |||
| P/Wild 2 (1978b) | 19780615.87 | 6.5 | 5.6 | |||
| Bradfield (1978c) | 19780317.69 | 7.2 | 2.8 | |||
| Kohler (1977m) | 19771110.57 | 6.6 | 6.3 | |||
| P/d'Arrest (1976e) | 19760812.87 | 10.0 | 0.071 | 6.7 | 0.028 | |
| West (1975n) | 19760225.22 | 4.4 | 3.2 | |||
| Bradfield (1976a) | 19760224.63 | 11.5 | 4.0 | |||
| Mori-Sato-Fujikawa (1975j) | 19751225.87 | 5.3 | 4.0 | |||
| Bradfield (1975p) | 19751221.18 | 8.9 | 2.9 | |||
| Suzuki-Saigusa-Mori (1975k) | 19751015.36 | 10.0 | 4.0 | |||
| Kobayashi-Berger-Milon (1975h) | 19750905.33 | 7.3 | 3.8 | |||
| Bradfield (1974b) | 19740318.35 | 7.5 | 2.9 | |||
| Kohoutek (1973f) | 19731228.43 | 5.5 | 2.2 | 6.6 | 2.8 |
The average brightness evolution of a comet can be described by the formula: m = M0 + 5×log (delta) + 2.5×n×log r.
A time-dependent evolution of the brightness, shown by several comets (indicated in the table above by values n < 0.5), can be described by the formula:
m = M0 + 5×log (delta) + n×(t-T)
delta = Distance Comet - Earth
r = Distance Comet - Sun
t = Time of observation
Andreas Kammerer
