Bright comets in the coming 3 months

The below table lists all comets that are expected to become brighter than magnitude 15 in the coming 3 months.
For detailed information about a comet, click on its designation.

Comet(s) Today Perihelion Nearest approach
designation magn delta radius date magn radius date magn delta
C/2017 K2 (PANSTARRS)8.42.57 AU1.82 AU19 Dec 20228.31.80 AU14 Jul 20228.71.81 AU
C/2022 E3 (ZTF)9.51.81 AU1.33 AU12 Jan 20236.51.11 AU1 Feb 20234.70.28 AU
C/2022 P1 (NEOWISE)10.42.10 AU1.60 AU28 Nov 202210.41.60 AU25 Sep 202210.70.85 AU
C/2020 V2 (ZTF)10.52.44 AU2.88 AU8 May 202310.02.23 AU17 Sep 20239.61.85 AU
C/2019 L3 (ATLAS)11.24.56 AU4.57 AU9 Jan 20228.93.55 AU6 Jan 20228.92.58 AU
81P/Wild11.22.05 AU1.61 AU15 Dec 202211.11.60 AU18 May 202312.91.22 AU
C/2022 A2 (PANSTARRS)11.52.26 AU2.03 AU18 Feb 20239.61.74 AU17 Jan 20239.61.61 AU
29P/Schwassmann-Wachmann11.55.23 AU6.05 AU18 Apr 201911.85.78 AU9 Sep 201811.14.78 AU
73P-AA/Schwassmann-Wachmann12.81.57 AU2.06 AU5 Jul 20223.80.94 AU30 Jul 20223.50.19 AU
C/2020 K1 (PANSTARRS)13.24.34 AU3.45 AU9 May 202311.53.07 AU9 Jun 202311.42.47 AU
C/2019 T4 (ATLAS)13.25.30 AU4.48 AU9 Jun 202212.24.24 AU4 Apr 202212.03.33 AU
C/2019 U5 (PANSTARRS)13.64.41 AU3.79 AU29 Mar 202312.33.62 AU24 Mar 202312.32.63 AU
118P/Shoemaker-Levy13.81.16 AU1.83 AU24 Nov 202213.91.83 AU18 Jan 202313.50.92 AU
C/2021 E3 (ZTF)14.12.72 AU2.74 AU11 Jun 20229.81.78 AU31 May 20229.71.21 AU
71P/Clark14.22.65 AU1.67 AU22 Jan 202313.61.59 AU14 Sep 202317.11.62 AU
C/2021 P4 (ATLAS)14.32.80 AU2.13 AU30 Jul 202210.71.08 AU13 Jul 202210.81.96 AU
73P/Schwassmann-Wachmann14.41.54 AU1.59 AU25 Aug 202210.50.97 AU22 Sep 202210.80.97 AU
C/2021 Y1 (ATLAS)14.61.74 AU2.72 AU30 Apr 202314.42.03 AU12 Dec 202214.41.69 AU
C/2021 X1 (Maury-Attard)14.72.91 AU3.66 AU27 May 202314.83.23 AU25 Sep 202313.92.44 AU
C/2020 R7 (ATLAS)14.93.98 AU3.04 AU16 Sep 202214.12.96 AU15 Jul 202213.62.18 AU
C/2020 Y2 (ATLAS)14.93.09 AU3.50 AU17 Jun 202214.93.13 AU19 Mar 202214.62.92 AU
C/2021 T4 (Lemmon)14.92.76 AU3.44 AU31 Jul 20238.21.48 AU20 Jul 20237.80.54 AU
C/2022 U2 (ATLAS)15.01.06 AU1.50 AU14 Jan 202313.31.33 AU28 Jan 202313.10.56 AU
237P/LINEAR15.83.21 AU2.37 AU14 May 202311.61.99 AU8 Jul 202311.41.06 AU
96P/Machholz15.82.20 AU1.55 AU31 Jan 20230.70.12 AU31 Jan 20230.80.89 AU
126P/IRAS16.23.52 AU2.80 AU5 Jul 202312.51.71 AU18 Sep 202312.31.28 AU


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





    Terminology:
            
    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
    

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.