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/2020 R4 (ATLAS)13.519.01.80 AU2.64 AU2 Mar 202114.81.03 AU23 Apr 202113.10.46 AU
C/2020 R2 (PANSTARRS)9.020.55.26 AU6.18 AU24 Feb 202219.34.69 AU20 Oct 202118.73.83 AU
C/2020 Q2 (PANSTARRS)12.013.44.75 AU5.53 AU8 Feb 202021.95.40 AU5 Aug 202021.24.47 AU
C/2020 Q1 (Borisov)14.012.70.78 AU1.41 AU15 Aug 202014.11.32 AU25 Sep 202012.90.73 AU
C/2020 P4-A (SOHO)5.319.72.13 AU1.22 AU8 Aug 20205.00.09 AU7 Aug 20205.60.91 AU
C/2020 P4-B (SOHO)0.015.02.07 AU1.22 AU8 Aug 20200.40.10 AU7 Aug 20201.00.91 AU
C/2020 P4-C (SOHO)-1.614.21.43 AU1.28 AU6 Aug 20200.40.09 AU9 Aug 20203.20.91 AU
C/2020 P3 (ATLAS)6.018.66.83 AU6.96 AU23 Apr 202118.66.81 AU8 Dec 202018.46.38 AU
P/2020 P215.017.10.91 AU1.70 AU26 Dec 202014.01.31 AU23 Dec 202014.00.38 AU
C/2020 P1 (NEOWISE)14.013.70.90 AU0.89 AU20 Oct 20208.90.34 AU13 Oct 20208.90.66 AU
P/2020 O3 (PANSTARRS)12.020.83.29 AU4.18 AU28 Jan 202121.74.17 AU22 Aug 202020.73.19 AU
C/2020 O2 (Amaral)8.017.85.92 AU5.56 AU23 Aug 202116.94.90 AU10 Jun 202116.53.92 AU
P/2020 O1 (Lemmon-PANSTARRS)15.520.41.67 AU2.39 AU3 May 202020.72.33 AU27 Jul 202019.91.34 AU
C/2020 N2 (ATLAS)16.019.62.00 AU1.82 AU23 Aug 202018.71.79 AU27 Jul 202017.80.88 AU
C/2020 N1 (PANSTARRS)12.518.42.00 AU2.74 AU12 Mar 202114.31.32 AU3 Feb 202114.51.23 AU
C/2020 M5 (ATLAS)9.018.43.96 AU4.39 AU19 Aug 202116.63.00 AU3 Mar 202216.62.60 AU
A/2020 M414.522.36.30 AU5.97 AU23 Nov 202022.25.95 AU5 May 202121.65.11 AU
C/2020 M3 (ATLAS)14.510.40.63 AU1.39 AU25 Oct 20209.71.27 AU14 Nov 20209.60.36 AU
P/2020 M1 (PANSTARRS)14.522.23.24 AU3.27 AU21 Dec 201921.32.66 AU25 May 202020.51.90 AU
P/2020 K9 (Lemmon-PANSTARRS)12.518.62.11 AU2.97 AU11 Feb 202119.62.85 AU24 Aug 202018.62.02 AU
C/2020 K8 (Catalina-ATLAS)15.013.51.19 AU0.48 AU14 Sep 202013.30.47 AU14 Aug 202014.60.60 AU
C/2020 K7 (PANSTARRS)8.020.26.12 AU6.73 AU29 Oct 201920.26.38 AU1 Jul 201919.85.43 AU
C/2020 K6 (Rankin)8.020.06.07 AU6.40 AU13 Sep 202119.55.87 AU2 Jul 202119.25.10 AU
C/2020 K5 (PANSTARRS)11.019.53.88 AU3.58 AU5 Jun 202113.91.54 AU20 May 202113.91.55 AU
C/2020 K4 (PANSTARRS)16.523.83.36 AU2.92 AU3 Mar 202020.91.75 AU7 Jun 202020.01.12 AU
C/2020 K3 (Leonard)14.521.32.56 AU2.16 AU30 May 202019.41.59 AU12 Jul 202018.91.33 AU
C/2020 K2 (PANSTARRS)6.520.78.82 AU8.88 AU4 Aug 202020.78.88 AU2 Jul 202020.68.51 AU
C/2020 K1 (PANSTARRS)5.519.68.70 AU8.69 AU9 May 202312.53.08 AU9 Jun 202312.42.47 AU
C/2020 J1 (SONEAR)8.515.53.77 AU3.89 AU18 Apr 202114.23.36 AU17 May 202114.12.37 AU
A/2020 H918.023.84.72 AU3.80 AU21 Dec 201922.52.58 AU22 Apr 202021.21.90 AU
C/2020 H8 (PANSTARRS)10.520.84.99 AU4.75 AU4 Jun 202020.34.67 AU18 Jun 202020.34.08 AU
C/2020 H7 (Lemmon)11.021.15.08 AU4.50 AU3 Jun 202020.34.42 AU26 May 202020.33.75 AU
C/2020 H6 (ATLAS)8.018.06.35 AU5.55 AU30 Sep 202117.14.70 AU30 Apr 202116.43.86 AU
C/2020 H5 (Robinson)5.019.810.16 AU9.37 AU14 Nov 202019.79.37 AU11 Apr 202119.48.51 AU
C/2020 H4 (Leonard)15.016.21.74 AU0.99 AU29 Aug 202015.80.93 AU9 Jul 202016.21.14 AU
C/2020 H3 (Wierzchos)13.019.72.31 AU2.60 AU3 Jun 202018.52.30 AU21 Jun 202018.41.62 AU
C/2020 H2 (Pruyne)18.022.03.11 AU2.44 AU27 Apr 202014.20.83 AU8 May 202014.00.66 AU
P/2020 G1 (Pimentel)17.022.53.44 AU2.75 AU17 Mar 202014.90.51 AU24 Apr 202015.60.65 AU
C/2020 F8 (SWAN)10.013.72.26 AU2.22 AU27 May 20202.60.43 AU13 May 20202.50.56 AU
A/2020 F712.020.07.02 AU6.16 AU14 Nov 202119.45.33 AU15 Feb 202118.94.78 AU
C/2020 F6 (PANSTARRS)14.521.94.77 AU3.80 AU11 Apr 202020.43.51 AU29 Apr 202020.32.51 AU
C/2020 F5 (MASTER)6.515.34.52 AU4.59 AU24 Mar 202115.24.33 AU22 Aug 202114.73.57 AU
P/2020 F4 (PANSTARRS)16.022.14.04 AU3.26 AU30 Nov 201920.92.74 AU16 Mar 202020.01.84 AU
C/2020 F3 (NEOWISE)7.59.82.24 AU1.73 AU3 Jul 20201.00.29 AU23 Jul 20203.30.69 AU
C/2020 F2 (ATLAS)4.518.810.14 AU9.62 AU16 Jul 202218.28.82 AU20 Apr 202217.97.85 AU
P/2020 F1 (Leonard)12.022.25.44 AU4.50 AU29 Aug 201921.53.98 AU10 Mar 202020.63.14 AU

For possible comets still needing confirmation, see http://www.minorplanetcenter.net/iau/NEO/pccp_tabular.html



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
    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.