Recently discovered comets

The below table lists comets that have been discovered in the past 6 months.
For detailed information about a comet, click on its designation.

Comet(s) Today Perihelion Nearest approach
designation Hₒ magn delta radius date magn radius date magn delta
C/2019 J2 (Palomar) AU1.90 AU20 Jul 201916.61.72 AU14 Jul 201916.61.74 AU
C/2019 J1 (Lemmon) AU2.51 AU8 Apr 201918.92.48 AU3 Jul 201918.41.68 AU
C/2019 H1 (NEOWISE)15.518.61.22 AU1.86 AU27 Apr 201918.91.85 AU22 May 201918.61.22 AU
P/2019 GG21 (PANSTARRS) AU3.82 AU3 Jul 201921.73.81 AU27 Mar 201921.22.87 AU
A/2019 G413.021.35.79 AU6.08 AU8 Nov 201821.45.94 AU17 Mar 201920.85.19 AU
A/2019 G317.122.42.41 AU3.23 AU3 Dec 201822.72.86 AU18 Apr 201921.72.13 AU
A/2019 G216.521.82.61 AU3.22 AU9 Dec 201920.62.30 AU11 Jan 202019.71.45 AU
P/2019 G1 (PANSTARRS)12.519.02.12 AU3.05 AU6 Jun 201919.13.05 AU27 Apr 201918.92.07 AU
C/2019 F2 (ATLAS) AU2.54 AU8 Sep 201918.02.23 AU14 Feb 201918.72.26 AU
C/2019 F1 (ATLAS-Africano)5.518.26.50 AU7.32 AU23 Jun 202113.53.60 AU21 Jun 202113.53.05 AU
C/2019 E3 (ATLAS)2.519.413.11 AU13.40 AU12 Nov 202317.710.36 AU24 Aug 202417.710.12 AU
C/2019 D1 (Flewelling) AU1.58 AU11 May 201914.51.58 AU10 Sep 201915.91.52 AU
A/2019 C16.619.47.04 AU6.99 AU4 May 202018.96.58 AU17 Mar 202018.75.70 AU
C/2019 B3 (PANSTARRS)5.518.87.32 AU7.90 AU19 Jan 202118.16.83 AU3 May 202018.06.52 AU
P/2019 B2 (Groeller)14.519.42.24 AU2.42 AU8 Jun 201919.72.42 AU20 Feb 201918.81.57 AU
C/2019 B1 (Africano) AU1.78 AU19 Mar 201918.21.60 AU11 Feb 201917.40.92 AU
C/2019 A9 (PANSTARRS) AU1.72 AU26 Jul 201918.21.43 AU4 Sep 201918.31.92 AU
P/2019 A8 (PANSTARRS) AU2.68 AU26 Aug 201821.01.85 AU6 May 201921.31.65 AU
P/2019 A7 (PANSTARRS)13.521.33.45 AU3.23 AU7 Jan 201819.72.68 AU14 Oct 201719.11.77 AU
P/2019 A6 (Lemmon-PANSTARRS) AU3.07 AU29 Aug 201820.81.94 AU9 Jan 201920.51.49 AU
C/2019 A5 (PANSTARRS)9.521.66.44 AU6.33 AU9 Jun 201921.76.32 AU14 Feb 201921.25.40 AU
P/2019 A4 (PANSTARRS) AU2.44 AU4 Dec 201819.82.38 AU13 Jan 201919.51.40 AU
P/2019 A3 (PANSTARRS) AU2.79 AU1 Aug 201820.92.31 AU9 Oct 201820.41.35 AU
P/2019 A2 (ATLAS)10.519.24.02 AU3.68 AU21 Nov 201818.33.54 AU13 Jan 201918.02.58 AU
P/2019 A1 (PANSTARRS) AU2.87 AU11 Oct 201821.32.21 AU3 Feb 201920.71.46 AU
P/2018 Y2 (Africano)11.520.84.52 AU3.98 AU2 Jan 201919.73.89 AU1 Jan 201919.72.91 AU
C/2018 Y1 (Iwamoto)11.515.02.86 AU1.93 AU7 Feb 20197.01.29 AU13 Feb 20196.50.30 AU
C/2018 X3 (PANSTARRS)14.522.13.64 AU2.98 AU30 Dec 201820.12.70 AU9 Dec 201820.01.73 AU
C/2018 X2 (Fitzsimmons) AU2.21 AU8 Jul 201916.72.13 AU7 Jan 201918.02.23 AU
C/2018 W2 (Africano)9.514.62.65 AU2.10 AU5 Sep 201910.91.45 AU27 Sep 20199.80.49 AU
C/2018 W115.717.71.88 AU1.36 AU11 May 201917.81.36 AU11 Dec 201818.71.65 AU
P/2018 V5 (Trujillo-Sheppard)12.523.15.65 AU4.87 AU3 Oct 201822.44.71 AU11 Dec 201822.13.76 AU
C/2018 V4 (Africano)12.520.84.17 AU3.28 AU1 Mar 201920.13.20 AU14 Dec 201819.52.38 AU
A/2018 V312.019.12.93 AU2.09 AU8 Sep 201916.61.34 AU19 Aug 201913.70.38 AU
C/2018 V2 (ATLAS)14.522.03.51 AU3.03 AU26 Nov 201819.62.47 AU8 Nov 201819.41.55 AU
P/2018 VN2 (Leonard) AU3.29 AU7 Jun 201820.42.11 AU11 Nov 201819.81.50 AU
C/2018 V1 (Machholz-Fujikawa-Iwamoto) AU2.98 AU3 Dec 20187.70.39 AU27 Nov 20187.80.67 AU

For possible comets still needing confirmation, see

For each of the listed comets, the current position is plotted in the below all-sky chart:

    delta:      Distance between comet and earth in AU
    radius:     Distance between comet and sun in AU
    magn:       Magnitude (brightness) estimate    
    elong:      Elongation in degrees (angle sun-earth-comet)    
    AU:         Astronomical Unit (mean distance between earth and sun: 149597870.7 km
    Perihelion: On this date the comet (or other type of body) is closest to the sun
    Hₒ:         Absolute magnitude (magnitude from a distance of 1 AU) 

Orbital elements provided by MPC (Minor Planet Center)
Observations contributed by observers worldwide, via COBS (Comet Observation Database).
Calculations by a modified version of AAPlus, a C# implementation of the AA+ project by PJ Naughter from the algorithms presented in the book "Astronomical Algorithms" by Jean Meeus.
NGC2000 dso catalog and star labels from VizieR as provided by the Strasbourg astronomical Data Center.
Tycho2 catalog from the ESO archive.