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Comet observations

Until today I've had the opportunity to observe and image 54 different comets.
The table below lists the individual observations of each of those comets.

Number of comets observed visually: 28
Number of visual observations: 136

Number of comets imaged: 38
Number of ccd observations: 65


Comet observations
date designation Type Magnitude Coma (arcmin) Condensation Instrument Aperture Power
16 Feb 2020C/2019 Y4 (ATLAS)CCD14.90.4Ritchey-Chretien43.1 cm
14 Feb 2020112P/Urata-NiijimaCCD15.80.3Ritchey-Chretien51.0 cm
1 Feb 2020C/2020 A2 (Iwamoto)CCD12.82.1Newtonian25.0 cm
19 Jan 2020C/2017 T2 (PANSTARRS)Visual9.63.05Newtonian30.0 cm109x
15 Jan 2020C/2019 Y1 (ATLAS)CCD15.20.4Ritchey-Chretien51.0 cm
28 Dec 201988P/HowellCCD18.9Ritchey-Chretien51.0 cm
20 Dec 2019C/2017 T2 (PANSTARRS)Visual9.92.05Newtonian30.0 cm109x
5 Dec 2019C/2018 F4 (PANSTARRS)CCD13.9Refractor12.7 cm
24 Nov 2019C/2019 N1 (ATLAS)CCD17.3Ritchey-Chretien61.0 cm
24 Nov 2019C/2017 T2 (PANSTARRS)Visual10.41.54Newtonian30.0 cm109x
6 Oct 20192I/BorisovCCD16.40.2Ritchey-Chretien43.1 cm
4 Oct 2019C/2019 K5 (Young)CCD15.30.3Ritchey-Chretien61.0 cm
21 Sep 2019C/2018 W2 (Africano)Visual8.78.02Newtonian13.0 cm25x
20 Sep 2019C/2018 W2 (Africano)Visual8.97.02Newtonian30.0 cm64x
19 Sep 2019C/2018 W2 (Africano)Visual9.25.02Newtonian30.0 cm64x
9 Sep 2019C/2018 W2 (Africano)Visual10.05.03Newtonian30.0 cm64x
3 Aug 2019261P/LarsonCCD15.60.2Ritchey-Chretien61.0 cm
3 Aug 2019260P/McNaughtCCD13.30.3Ritchey-Chretien61.0 cm
23 Jul 2019C/2017 T2 (PANSTARRS)CCD14.20.3Ritchey-Chretien51.0 cm
10 Jul 2019C/2018 N2 (ASASSN)CCD13.20.75Ritchey-Chretien43.1 cm
14 May 201968P/KlemolaCCD16.60.1Ritchey-Chretien61.0 cm
5 May 2019C/2019 D1 (Flewelling)CCD15.30.35Ritchey-Chretien61.0 cm
28 Apr 201968P/KlemolaCCD17.20.1Ritchey-Chretien61.0 cm
23 Mar 2019C/2017 T2 (PANSTARRS)CCD15.00.33Ritchey-Chretien51.0 cm
17 Mar 2019C/2018 W2 (Africano)CCD16.20.24Ritchey-Chretien61.0 cm
11 Mar 2019C/2018 Y1 (Iwamoto)Visual9.68.02Newtonian30.0 cm64x
27 Feb 2019C/2018 Y1 (Iwamoto)Visual8.310.02Newtonian13.0 cm46x
26 Feb 2019C/2018 Y1 (Iwamoto)Visual8.210.02Newtonian13.0 cm46x
25 Feb 2019C/2018 Y1 (Iwamoto)Visual8.111.03Newtonian13.0 cm25x
24 Feb 2019C/2018 Y1 (Iwamoto)Visual7.911.03Newtonian13.0 cm25x
23 Feb 2019C/2018 Y1 (Iwamoto)Visual7.811.03Newtonian13.0 cm25x
23 Feb 2019C/2017 T2 (PANSTARRS)CCD15.30.35Ritchey-Chretien61.0 cm
17 Feb 2019C/2017 K2 (PANSTARRS)CCD17.20.12Binoculars51.0 cm
15 Feb 2019C/2018 Y1 (Iwamoto)Visual6.613.04Newtonian13.0 cm25x
3 Feb 2019C/2018 Y1 (Iwamoto)Visual7.59.03Newtonian13.0 cm25x
7 Jan 201964P/Swift-GehrelsCCD10.3Ritchey-Chretien41.3 cm
2 Jan 201964P/Swift-GehrelsCCD9.73.06Ritchey-Chretien43.0 cm
1 Jan 2019C/2017 T2 (PANSTARRS)CCD15.00.24Ritchey-Chretien61.0 cm
27 Dec 201846P/WirtanenVisual5.330.03Binoculars5.0 cm10x
25 Dec 201846P/WirtanenVisual5.135.03Binoculars5.0 cm10x
22 Dec 2018C/2018 Y1 (Iwamoto)CCD14.11.6 cm
17 Dec 201846P/WirtanenVisual4.635.03Binoculars5.0 cm10x
13 Dec 201846P/WirtanenVisual4.545.03Binoculars5.0 cm10x
10 Dec 201864P/Swift-GehrelsVisual9.36.04Newtonian30.5 cm64x
10 Dec 201846P/WirtanenVisual4.840.03Binoculars5.0 cm10x
9 Dec 201846P/WirtanenVisual4.940.03Binoculars5.0 cm10x
9 Dec 2018C/2018 W2 (Africano)CCD16.7Ritchey-Chretien61.0 cm
7 Dec 201846P/WirtanenVisual5.038.03Binoculars5.0 cm10x
30 Nov 201838P/Stephan-OtermaVisual9.83.04Newtonian30.5 cm64x
30 Nov 201846P/WirtanenVisual5.727.03Binoculars5.0 cm10x
30 Nov 201864P/Swift-GehrelsVisual9.25.05Newtonian30.5 cm64x
17 Nov 2018C/2018 V1 (Machholz-Fujikawa-Iwamoto)Visual8.35.05Newtonian30.5 cm64x
17 Nov 201838P/Stephan-OtermaVisual9.83.83Newtonian30.5 cm64x
15 Nov 2018C/2018 V1 (Machholz-Fujikawa-Iwamoto)Visual8.13.04Newtonian13.0 cm25x
14 Nov 2018C/2018 V1 (Machholz-Fujikawa-Iwamoto)Visual8.03.04Newtonian30.5 cm64x
11 Nov 2018C/2018 V1 (Machholz-Fujikawa-Iwamoto)CCD7.7 cm
10 Nov 2018C/2017 T2 (PANSTARRS)CCD15.8Ritchey-Chretien43.0 cm
11 Oct 201838P/Stephan-OtermaVisual10.61.72Newtonian30.5 cm109x
11 Oct 201864P/Swift-GehrelsVisual11.01.83Newtonian30.5 cm109x
10 Oct 201838P/Stephan-OtermaVisual10.81.63Newtonian30.5 cm64x
6 Oct 2018C/2017 T2 (PANSTARRS)CCD16.16Ritchey-Chretien51.0 cm
16 Sep 2018123P/West-HartleyCCD16.2Ritchey-Chretien61.0 cm
16 Sep 201859P/Kearns-KweeCCD16.8Ritchey-Chretien61.0 cm
9 Sep 201821P/Giacobini-ZinnerVisual7.35Binoculars5.0 cm10x
8 Sep 201821P/Giacobini-ZinnerVisual7.38.05Binoculars5.0 cm10x
4 Sep 201821P/Giacobini-ZinnerVisual7.38.03Binoculars5.0 cm10x
17 Aug 201821P/Giacobini-ZinnerVisual7.76.04Newtonian13.0 cm25x
13 Aug 201846P/WirtanenCCD15.9Ritchey-Chretien61.0 cm
6 Aug 201829P/Schwassmann-WachmannCCD13.20.7Ritchey-Chretien43.0 cm
4 Aug 201821P/Giacobini-ZinnerVisual8.44.55Newtonian13.0 cm25x
4 Aug 201821P/Giacobini-ZinnerVisual8.36.04Binoculars5.0 cm10x
30 Jul 201838P/Stephan-OtermaCCD15.76.0Ritchey-Chretien41.3 cm
22 Jul 2018C/2017 S3 (PANSTARRS)Visual8.86.03Newtonian13.0 cm25x
22 Jul 201821P/Giacobini-ZinnerVisual9.33.05Newtonian13.0 cm25x
20 Jul 2018C/2017 S3 (PANSTARRS)Visual6.76.06Binoculars5.0 cm10x
14 Jul 201821P/Giacobini-ZinnerVisual9.92.85Newtonian30.5 cm64x
13 Jul 201821P/Giacobini-ZinnerVisual10.22.84Newtonian13.0 cm25x
11 Jul 2018C/2018 N1 (NEOWISE)CCD10.56.0Refractor10.6 cm
3 Jul 2018C/2017 S3 (PANSTARRS)Visual9.72.24Newtonian13.0 cm46x
13 Jun 201821P/Giacobini-ZinnerCCD13.71.25Ritchey-Chretien61.0 cm
3 Jun 201821P/Giacobini-ZinnerCCD14.26Ritchey-Chretien61.0 cm
3 Jun 2018C/2017 S3 (PANSTARRS)CCD16.15Ritchey-Chretien61.0 cm
26 May 2018C/2018 K1 (Weiland)CCD16.9 cm
16 Apr 2018C/2017 S3 (PANSTARRS)CCD17.6Binoculars51.0 cm
13 Apr 201821P/Giacobini-ZinnerCCD17.3Ritchey-Chretien61.0 cm
17 Mar 201821P/Giacobini-ZinnerCCD18.3Ritchey-Chretien51.0 cm
14 Mar 2018C/2018 E1 (ATLAS)CCD17.3 cm
24 Jan 2018C/2017 K2 (PANSTARRS)CCD18.23Ritchey-Chretien61.0 cm
7 Jan 2018C/2017 T1 (Heinze)Visual10.53.03Newtonian30.5 cm64x
29 Dec 2017C/2017 T1 (Heinze)CCD11.11.3Ritchey-Chretien61.0 cm
29 Dec 2017C/2017 T1 (Heinze)Visual11.41.33Newtonian30.5 cm109x
21 Dec 2017C/2017 T1 (Heinze)CCD12.30.45Ritchey-Chretien43.1 cm
21 Dec 2017C/2016 R2 (PANSTARRS)CCD11.31.86Ritchey-Chretien43.1 cm
21 Dec 2017174P/EcheclusCCD13.40.92Ritchey-Chretien43.1 cm
26 Nov 2017C/2017 T1 (Heinze)CCD15.76Binoculars61.0 cm
21 Oct 2017C/2017 T1 (Heinze)CCD17.80.24Ritchey-Chretien70.0 cm
14 Oct 2017C/2017 O1 (ASASSN)Visual8.96.02Binoculars30.5 cm64x
22 Sep 2017C/2017 O1 (ASASSN)Visual9.67.02Newtonian30.5 cm64x
20 Sep 2017C/2017 K2 (PANSTARRS)CCD19.15Ritchey-Chretien61.0 cm
19 Sep 2017C/2017 K2 (PANSTARRS)CCD19.25Ritchey-Chretien61.0 cm
24 Jul 2017C/2016 R2 (PANSTARRS)CCD14.07Ritchey-Chretien43.0 cm
24 Jul 2017C/2017 O1 (ASASSN)CCD12.04Ritchey-Chretien43.0 cm
24 Jul 2017C/2015 VL62 (Lemmon-Yeung-PANSTARRS)CCD13.85Ritchey-Chretien43.0 cm
1 Jul 2017C/2016 R2 (PANSTARRS)CCD15.36Ritchey-Chretien43.0 cm
2 Jun 2017C/2017 K2 (PANSTARRS)CCD19.14Ritchey-Chretien61.0 cm
31 May 2017C/2015 VL62 (Lemmon-Yeung-PANSTARRS)CCD15.04Ritchey-Chretien43.0 cm
28 May 2017C/2017 D2 (Barros)CCD16.35Ritchey-Chretien43.0 cm
26 May 2017C/2015 V2 (Johnson)Visual8.18.06Newtonian30.5 cm64x
19 May 2017C/2015 V2 (Johnson)Visual8.58.04Newtonian13.0 cm46x
16 May 2017C/2015 V2 (Johnson)Visual8.57.05Newtonian13.0 cm46x
8 May 2017C/2015 V2 (Johnson)Visual8.74.56Binoculars30.5 cm64x
17 Apr 2017C/2016 R2 (PANSTARRS)CCD16.62Binoculars25.0 cm
9 Apr 2017C/2017 E4 (Lovejoy)Visual6.35.06Newtonian13.0 cm25x
1 Apr 2017C/2015 V2 (Johnson)Visual9.23.54Binoculars30.5 cm64x
27 Mar 201741P/Tuttle-Giacobini-KresakVisual7.316.04Newtonian13.0 cm25x
23 Mar 201741P/Tuttle-Giacobini-KresakVisual7.813.04Newtonian30.6 cm64x
21 Mar 201741P/Tuttle-Giacobini-KresakVisual7.915.03Newtonian30.5 cm64x
15 Mar 201741P/Tuttle-Giacobini-KresakVisual8.918.04Newtonian13.0 cm25x
11 Mar 2017C/2015 V2 (Johnson)Visual10.71.24Newtonian30.5 cm109x
23 Feb 2017C/2016 R2 (PANSTARRS)CCD14.94Ritchey-Chretien43.1 cm
15 Feb 20172P/EnckeVisual9.82.53Newtonian30.5 cm109x
19 Jan 2017C/2016 R2 (PANSTARRS)CCD14.1Ritchey-Chretien43.0 cm
28 Dec 201641P/Tuttle-Giacobini-KresakCCD15.73Ritchey-Chretien43.0 cm
22 Dec 2016C/2016 R2 (PANSTARRS)CCD13.44Ritchey-Chretien43.1 cm
21 Dec 2016C/2016 R2 (PANSTARRS)CCD13.95Ritchey-Chretien70.0 cm
20 Dec 2016C/2016 U1 (NEOWISE)Visual9.73.02Newtonian30.5 cm64x
10 Dec 201643P/Wolf-HarringtonCCD12.95Refractor10.6 cm
6 Dec 2016C/2016 U1 (NEOWISE)Visual10.54.01Newtonian30.5 cm64x
3 May 2016C/2014 S2 (PANSTARRS)Visual10.72.83Newtonian30.5 cm109x
14 Apr 2016252P/LINEARVisual6.79.04Newtonian30.5 cm64x
14 Apr 2016C/2014 S2 (PANSTARRS)Visual10.02.33Newtonian30.5 cm109x
8 Apr 2016C/2014 S2 (PANSTARRS)Visual9.72.03Newtonian30.5 cm109x
22 Mar 2016P/2016 BA14 (PANSTARRS)Visual12.71.09 cm
29 Dec 2015C/2013 X1 (PANSTARRS)Visual9.83.03Newtonian30.5 cm109x
8 Dec 2015C/2013 X1 (PANSTARRS)Visual10.21.53Newtonian30.5 cm109x
8 Dec 2015C/2013 US10 (Catalina)Visual6.56.04Newtonian30.5 cm109x
13 Nov 2015C/2013 X1 (PANSTARRS)Visual10.71.03Newtonian30.5 cm109x
13 Nov 2015C/2014 S2 (PANSTARRS)Visual9.32.05Newtonian30.5 cm109x
8 Nov 2015C/2013 X1 (PANSTARRS)Visual10.71.53Newtonian30.5 cm109x
1 Nov 2015C/2014 S2 (PANSTARRS)Visual9.63.04Newtonian30.5 cm109x
11 Oct 2015C/2014 S2 (PANSTARRS)Visual10.42.05Newtonian30.5 cm109x
1 Oct 2015C/2014 S2 (PANSTARRS)Visual10.61.54Newtonian30.5 cm109x
30 Sep 2015C/2014 S2 (PANSTARRS)Visual10.71.55Newtonian30.5 cm109x
26 Sep 2015C/2014 S2 (PANSTARRS)Visual10.62.04Newtonian30.5 cm109x
28 Jul 2015C/2014 Q2 (Lovejoy)Visual9.8Newtonian30.5 cm64x
6 Jul 2015C/2014 Q2 (Lovejoy)Visual8.9Newtonian30.5 cm64x
22 Jun 2015C/2014 Q2 (Lovejoy)Visual8.5 cm
10 Mar 2015C/2014 Q2 (Lovejoy)Visual5.8Newtonian30.5 cm64x
17 Feb 2015C/2014 Q2 (Lovejoy)Visual5.4Newtonian30.5 cm64x
6 Feb 2015C/2014 Q2 (Lovejoy)Visual5.0Naked eye0.0 cm
26 Jan 2015C/2014 Q2 (Lovejoy)Visual4.6Binoculars5.0 cm10x
21 Jan 2015C/2014 Q2 (Lovejoy)Visual4.3Binoculars5.0 cm10x
20 Jan 2015C/2014 Q2 (Lovejoy)Visual4.3Binoculars5.0 cm10x
16 Jan 2015C/2014 Q2 (Lovejoy)Visual4.0Binoculars5.0 cm10x
14 Jan 2015C/2014 Q2 (Lovejoy)Visual4.1Naked eye0.0 cm
13 Jan 2015C/2014 Q2 (Lovejoy)Visual4.2Naked eye0.0 cm
10 Jan 2015C/2014 Q2 (Lovejoy)Visual4.4Binoculars5.0 cm10x
8 Jan 2015C/2014 Q2 (Lovejoy)Visual4.5Binoculars5.0 cm10x
3 Jan 2015C/2014 Q2 (Lovejoy)Visual4.9Binoculars5.0 cm10x
2 Jan 2015C/2014 Q2 (Lovejoy)Visual4.9Binoculars5.0 cm10x
31 Dec 2014C/2014 Q2 (Lovejoy)Visual5.0Binoculars5.0 cm10x
28 Dec 2014C/2014 Q2 (Lovejoy)Visual5.2Binoculars5.0 cm10x
26 Dec 2014C/2014 Q2 (Lovejoy)Visual6.0Binoculars5.0 cm10x
17 Sep 2014C/2014 E2 (Jacques)Visual8.3Newtonian30.5 cm64x
1 Sep 2014C/2014 E2 (Jacques)Visual7.2Newtonian30.5 cm64x
28 Aug 2014C/2014 E2 (Jacques)Visual7.1Newtonian30.5 cm64x
27 Aug 2014C/2014 E2 (Jacques)Visual7.0Binoculars5.0 cm10x
25 Aug 2014C/2014 E2 (Jacques)Visual6.9Binoculars5.0 cm10x
13 Aug 2014C/2014 E2 (Jacques)Visual6.8Binoculars5.0 cm10x
3 Aug 2014C/2014 E2 (Jacques)Visual6.9Newtonian30.5 cm64x
2 Aug 2014C/2014 E2 (Jacques)Visual7.0Newtonian30.5 cm
11 Jun 2014C/2012 K1 (PANSTARRS)Visual8.2Newtonian30.5 cm
1 Jun 2014C/2012 K1 (PANSTARRS)Visual8.3Newtonian30.5 cm
25 May 2014C/2012 K1 (PANSTARRS)Visual8.6Newtonian30.5 cm
12 May 2014C/2012 K1 (PANSTARRS)Visual8.7Newtonian30.5 cm
3 May 2014C/2012 K1 (PANSTARRS)Visual8.8Newtonian30.5 cm
28 Apr 2014C/2012 K1 (PANSTARRS)Visual8.9Newtonian30.5 cm
25 Apr 2014C/2012 K1 (PANSTARRS)Visual9.1Newtonian30.5 cm
20 Apr 2014C/2012 K1 (PANSTARRS)Visual9.5Newtonian30.5 cm
16 Apr 2014C/2012 K1 (PANSTARRS)Visual9.6Newtonian30.5 cm
9 Apr 2014C/2012 K1 (PANSTARRS)Visual9.8Newtonian30.5 cm
5 Apr 2014C/2012 K1 (PANSTARRS)Visual10.0Newtonian30.5 cm
21 Mar 2014C/2012 K1 (PANSTARRS)Visual10.1Newtonian30.5 cm
9 Mar 2014C/2012 K1 (PANSTARRS)Visual10.9Newtonian30.5 cm
3 Feb 2014C/2013 R1 (Lovejoy)Visual7.4Newtonian13.0 cm26x
3 Feb 2014C/2012 X1 (LINEAR)Visual8.7Newtonian13.0 cm26x
7 Jan 2014C/2013 R1 (Lovejoy)Visual6.3Newtonian13.0 cm26x
23 Dec 2013C/2013 R1 (Lovejoy)Visual5.9Newtonian13.0 cm26x
20 Dec 2013C/2013 R1 (Lovejoy)Visual6.0Newtonian13.0 cm26x
15 Nov 2013C/2013 R1 (Lovejoy)Visual5.7Newtonian13.0 cm26x
15 Nov 2013C/2012 S1 (ISON)Visual6.2Newtonian13.0 cm26x
13 Nov 2013C/2013 R1 (Lovejoy)Visual5.8Newtonian13.0 cm26x
13 Nov 2013C/2012 S1 (ISON)Visual7.3Newtonian13.0 cm26x
11 Nov 2013C/2013 R1 (Lovejoy)Visual6.3Newtonian13.0 cm26x
9 Nov 2013C/2013 R1 (Lovejoy)Visual6.5Newtonian13.0 cm26x
9 Nov 2013C/2012 S1 (ISON)Visual8.2Newtonian13.0 cm26x
5 Nov 2013C/2013 R1 (Lovejoy)Visual7.5Newtonian13.0 cm26x
30 Oct 2013C/2013 R1 (Lovejoy)Visual8.0Newtonian13.0 cm26x
3 May 2013C/2011 L4 (PANSTARRS)Visual7.6Newtonian13.0 cm26x
6 Apr 2013C/2011 L4 (PANSTARRS)Visual5.0Newtonian13.0 cm26x
1 Apr 2013C/2011 L4 (PANSTARRS)Visual4.5Newtonian13.0 cm26x
 



    Terminology:

    magnitude:      brightness estimate of the comet
    coma:           size estimate of the comet's coma, measured in arcminutes
    condensation:   degree of condensation (0=completely diffuse, 9=completely stellar)