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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
P/2025 W4 (PANSTARRS)17.520.91.12 AU2.08 AU4 Oct 202521.32.03 AU30 Nov 202520.81.07 AU
P/2025 W3 (Kresken)9.013.81.52 AU2.46 AU18 Mar 202514.62.09 AU22 Jul 202413.51.39 AU
C/2025 W2 (ATLAS)17.919.81.11 AU1.46 AU7 Dec 202519.51.45 AU28 Nov 202519.40.93 AU
C/2025 W1 (Sankovich)9.719.94.52 AU4.88 AU17 Feb 202519.24.17 AU11 Jul 202419.23.79 AU
C/2025 V2 (Rankin)9.019.64.70 AU5.28 AU22 Mar 202713.21.95 AU30 Jun 202713.41.42 AU
C/2025 V1 (Borisov)16.318.21.72 AU0.89 AU16 Nov 202513.40.46 AU11 Nov 202513.30.69 AU
P/2025 UX10913.719.92.37 AU2.68 AU13 Aug 202520.52.57 AU28 Feb 202619.51.84 AU
P/2025 U1 (Hogan)11.720.73.53 AU4.19 AU26 Mar 202620.74.17 AU1 Feb 202620.53.29 AU
C/2025 T1 (ATLAS)14.710.51.57 AU1.14 AU2 Dec 20259.31.11 AU14 Nov 20259.71.02 AU
A/2025 S315.020.52.59 AU3.06 AU25 Jun 202619.92.24 AU29 Jul 202619.82.27 AU
A/2025 S216.018.91.44 AU1.70 AU2 Jan 202619.21.69 AU6 Nov 202517.20.88 AU
C/2025 R3 (PANSTARRS)12.217.32.26 AU2.31 AU19 Apr 20266.90.50 AU26 Apr 20262.80.49 AU
C/2025 R2 (SWAN)12.412.81.42 AU1.94 AU12 Sep 20256.70.50 AU20 Oct 20256.50.26 AU
C/2025 R1 (ATLAS)14.018.92.36 AU2.00 AU23 Nov 202518.51.98 AU13 Oct 202518.21.65 AU
C/2025 Q3 (ATLAS)12.216.01.56 AU2.26 AU25 Feb 202616.72.11 AU25 Nov 202516.01.41 AU
C/2025 Q1 (ATLAS)3.819.211.07 AU10.49 AU11 Jul 202418.810.10 AU12 Jun 202418.89.71 AU
A/2025 P117.125.14.17 AU3.58 AU30 Mar 202523.22.18 AU6 Aug 202522.71.77 AU
C/2025 O2 (MAPS)14.322.23.61 AU3.24 AU23 May 202520.32.29 AU17 Sep 202519.81.79 AU
C/2025 N2 (ATLAS)5.119.79.61 AU9.23 AU10 Dec 202419.58.98 AU3 Jul 202419.38.29 AU
C/2025 M3 (PANSTARRS)9.021.67.60 AU6.67 AU5 Jul 202621.06.53 AU19 May 202620.95.54 AU
C/2025 M2 (PANSTARRS)13.426.37.73 AU7.00 AU23 Nov 202720.52.72 AU11 Mar 202819.61.97 AU
C/2025 M1 (PANSTARRS)2.919.713.73 AU12.79 AU2 Aug 202918.310.83 AU23 Jun 202918.310.11 AU
C/2025 L211.718.83.33 AU2.83 AU20 Dec 202518.82.83 AU14 Aug 202518.32.18 AU
C/2025 L1 (ATLAS)11.415.72.45 AU1.71 AU12 Jan 202615.31.68 AU23 Mar 202614.41.10 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.

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