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 B3 (Rankin)11.519.12.69 AU3.54 AU22 Oct 201919.83.36 AU14 Mar 202019.22.63 AU
C/2020 B2 (Lemmon)14.520.31.91 AU2.78 AU23 Jan 202020.52.76 AU2 Mar 202020.31.90 AU
A/2020 B121.023.20.98 AU1.90 AU25 Dec 201922.71.75 AU14 Jan 202022.30.79 AU
C/2020 A3 (ATLAS) AU6.03 AU29 Jul 201919.65.84 AU3 May 201919.25.06 AU
C/2020 A2 (Iwamoto)13.511.50.91 AU1.24 AU8 Jan 202012.00.98 AU22 Feb 202011.70.91 AU
A/2020 A118.019.91.14 AU1.96 AU2 Dec 201921.01.67 AU3 Feb 202018.90.90 AU
A/2019 Y514.021.75.43 AU5.12 AU18 Aug 201921.44.91 AU10 Nov 201921.14.32 AU
C/2019 Y4 (ATLAS) AU2.13 AU31 May 20203.80.25 AU23 May 20205.10.78 AU
P/2019 Y3 (Catalina)18.520.51.35 AU1.35 AU13 Dec 201918.00.91 AU22 Nov 201918.10.90 AU
P/2019 Y2 (Fuls) AU2.14 AU30 Jan 202017.52.13 AU2 Apr 202017.01.19 AU
C/2019 Y1 (ATLAS) AU0.93 AU15 Mar 20208.40.83 AU3 May 202011.51.09 AU
P/2019 X2 (PANSTARRS) AU1.94 AU9 Dec 201920.71.82 AU16 Jan 202020.50.93 AU
P/2019 X1 (Pruyne)10.419.73.80 AU4.41 AU20 Jul 201920.34.30 AU30 Dec 201919.53.40 AU
P/2019 W1 (PANSTARRS)12.920.93.12 AU3.61 AU7 May 201921.33.34 AU17 Oct 201820.32.49 AU
P/2019 V2 (Groeller) AU5.13 AU22 Oct 202020.85.02 AU21 Mar 202120.14.06 AU
C/2019 V1 (Borisov) AU3.40 AU16 Jul 202019.13.10 AU30 Dec 201919.02.69 AU
A/2019 U614.518.22.03 AU2.11 AU18 Jun 202015.70.91 AU29 Jun 202015.70.83 AU
A/2019 U510.020.510.05 AU9.63 AU30 Mar 202315.33.62 AU25 Mar 202315.12.62 AU
P/2019 U4 (PANSTARRS) AU2.26 AU18 Sep 201921.81.85 AU27 Oct 201921.50.90 AU
P/2019 T6 (PANSTARRS)15.519.82.16 AU2.28 AU7 Nov 201917.92.05 AU5 Nov 201917.91.09 AU
P/2019 T5 (ATLAS) AU2.80 AU1 Aug 201918.61.53 AU29 Jan 202020.72.06 AU
C/2019 T4 (ATLAS) AU7.77 AU9 Jun 202213.84.24 AU5 Apr 202213.53.33 AU
C/2019 T3 (ATLAS)6.818.06.49 AU6.50 AU2 Mar 202117.65.95 AU11 Sep 202117.35.37 AU
A/2019 T212.520.35.84 AU4.94 AU22 Apr 202118.02.65 AU11 Jun 202117.82.47 AU
A/2019 T113.020.75.78 AU4.97 AU14 Jan 202120.14.28 AU21 May 202119.83.88 AU
A/2019 S414.521.03.63 AU3.47 AU7 Apr 202021.03.44 AU25 Nov 201920.63.01 AU
P/2019 S3 (PANSTARRS)18.323.82.31 AU2.34 AU26 Aug 201921.01.81 AU12 Oct 201920.70.89 AU
P/2019 S2 (PANSTARRS)13.523.04.89 AU4.02 AU20 Feb 201922.63.76 AU28 Aug 201921.62.84 AU
2I/Borisov11.016.72.25 AU2.61 AU8 Dec 201915.32.01 AU28 Dec 201915.31.94 AU
C/2019 Q3 (PANSTARRS)8.522.39.03 AU8.05 AU20 Aug 201821.17.25 AU13 Aug 201821.16.35 AU
A/2019 Q218.023.53.65 AU3.13 AU22 Jul 201920.31.26 AU28 Aug 201917.50.43 AU
A/2019 Q112.520.35.94 AU5.13 AU19 Jul 202019.85.00 AU3 Sep 202019.44.09 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.