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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 Hâ‚’ magn delta radius date magn radius date magn delta
C/2025 L211.719.32.85 AU3.40 AU19 Dec 202518.82.83 AU14 Aug 202518.32.18 AU
C/2025 L1 (ATLAS)11.418.73.05 AU3.09 AU12 Jan 202615.31.68 AU23 Mar 202614.41.10 AU
C/2025 K4 (Siverd)14.119.41.75 AU2.57 AU27 Jul 202519.52.54 AU24 Jun 202519.41.74 AU
C/2025 K3 (PANSTARRS)6.421.710.34 AU10.56 AU13 Dec 202814.53.47 AU24 Feb 202914.02.67 AU
C/2025 K2 (PANSTARRS)13.720.32.22 AU3.09 AU1 Nov 202520.92.83 AU8 Jul 202520.12.10 AU
C/2025 K1 (ATLAS)12.216.81.89 AU2.29 AU8 Oct 20257.60.34 AU25 Nov 202510.60.40 AU
C/2025 J1 (Borisov)9.119.35.15 AU4.78 AU11 Jun 202617.73.57 AU10 Dec 202617.33.07 AU
C/2025 F2 (SWAN)11.212.11.57 AU1.19 AU1 May 20255.50.33 AU2 May 20255.50.96 AU
C/2025 F1 (ATLAS)18.021.32.30 AU1.42 AU20 Apr 202518.91.07 AU27 Mar 202518.81.08 AU
C/2025 E1 (PANSTARRS)9.720.95.63 AU5.55 AU23 Sep 202618.84.00 AU24 Apr 202618.83.82 AU
C/2025 D6 (ATLAS)13.221.03.49 AU3.20 AU11 Dec 202419.72.50 AU23 Mar 202518.91.85 AU
C/2025 D5 (PANSTARRS)17.622.32.03 AU2.06 AU13 May 202521.62.01 AU27 Mar 202521.01.12 AU
P/2025 D4 (ATLAS)13.220.62.61 AU3.38 AU14 Feb 202520.73.25 AU30 Apr 202520.22.30 AU
P/2025 D3 (PANSTARRS)14.722.63.33 AU3.35 AU25 Jul 202422.42.97 AU4 Mar 202521.42.17 AU
P/2025 D2 (PANSTARRS)8.221.98.51 AU7.99 AU5 Nov 202821.47.33 AU1 May 202920.96.34 AU
C/2025 D1 (Groeller)1.218.915.62 AU14.94 AU20 May 202818.514.12 AU4 Feb 202818.313.14 AU
P/2025 C1 (ATLAS)10.819.22.16 AU2.86 AU6 Feb 202519.22.75 AU22 Apr 202518.71.78 AU
C/2025 B2 (Borisov)6.220.49.32 AU8.67 AU9 Sep 202620.08.24 AU15 Dec 202520.08.00 AU
C/2025 B1 (PANSTARRS)12.020.74.39 AU3.53 AU26 Jun 202520.73.53 AU7 Jan 202520.22.91 AU
A/2025 A714.020.53.63 AU3.00 AU28 Mar 202519.22.88 AU4 Mar 202518.51.91 AU
C/2025 A6 (Lemmon)13.220.13.58 AU2.60 AU8 Nov 202510.50.53 AU21 Oct 202510.30.60 AU
C/2025 A4 (PANSTARRS)12.421.23.67 AU3.98 AU13 Jan 202521.03.82 AU29 Mar 202520.73.02 AU
C/2025 A3 (Tsuchinshan)9.020.76.25 AU5.93 AU15 Mar 202620.05.79 AU27 Mar 202620.04.80 AU
P/2025 A2 (PANSTARRS)13.222.04.19 AU3.69 AU5 Oct 202421.43.45 AU27 Jan 202520.72.58 AU
A/2025 A111.820.37.99 AU7.05 AU12 Mar 202718.65.34 AU6 Mar 202718.64.52 AU
C/2024 Y1 (Masek)17.624.24.08 AU3.14 AU26 Nov 202414.10.82 AU13 Jan 202515.61.01 AU
C/2024 X4 (PANSTARRS)12.621.44.41 AU3.65 AU1 Sep 202520.93.60 AU29 Nov 202520.42.68 AU
P/2024 X3 (PANSTARRS)14.622.83.63 AU3.47 AU5 Sep 202421.32.61 AU8 Feb 202520.71.95 AU
C/2024 X2 (ATLAS)9.618.44.18 AU3.68 AU7 Jul 202518.53.68 AU19 Jan 202618.13.08 AU
C/2024 X1 (Fazekas)11.320.54.78 AU3.83 AU3 Aug 202520.53.82 AU11 Feb 202619.83.05 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
    Hâ‚’:         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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