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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 R1 (ATLAS)14.018.71.87 AU2.14 AU24 Nov 202518.51.97 AU13 Oct 202518.21.64 AU
P/2025 Q2 (PANSTARRS)17.121.61.48 AU2.32 AU11 Jul 202522.32.30 AU11 Oct 202521.61.41 AU
C/2025 Q1 (ATLAS)3.819.010.12 AU10.36 AU11 Jul 202418.810.10 AU12 Jun 202418.89.71 AU
A/2025 P117.123.42.19 AU2.87 AU30 Mar 202523.22.18 AU6 Aug 202522.71.77 AU
C/2025 O2 (MAPS)14.319.81.79 AU2.62 AU24 May 202520.32.29 AU17 Sep 202519.81.79 AU
C/2025 N2 (ATLAS)5.119.58.95 AU9.12 AU20 Jan 202519.69.02 AU4 Jul 202419.38.36 AU
C/2025 M3 (PANSTARRS)9.021.67.08 AU6.83 AU5 Jul 202621.06.53 AU19 May 202620.95.54 AU
C/2025 M2 (PANSTARRS)13.426.46.90 AU7.68 AU23 Nov 202720.52.72 AU11 Mar 202819.61.97 AU
C/2025 M1 (PANSTARRS)2.919.713.33 AU13.05 AU3 Aug 202918.310.83 AU23 Jun 202918.310.11 AU
C/2025 L211.718.32.36 AU3.00 AU20 Dec 202518.82.83 AU14 Aug 202518.32.18 AU
C/2025 L1 (ATLAS)11.416.92.40 AU2.28 AU12 Jan 202615.31.68 AU23 Mar 202614.41.10 AU
C/2025 K4 (Siverd)14.120.12.40 AU2.58 AU28 Jul 202519.52.53 AU24 Jun 202519.41.74 AU
C/2025 K3 (PANSTARRS)6.421.49.90 AU10.01 AU14 Dec 202814.63.47 AU24 Feb 202914.02.67 AU
C/2025 K2 (PANSTARRS)13.720.62.90 AU2.89 AU25 Oct 202520.92.86 AU9 Jul 202520.22.13 AU
C/2025 K1 (ATLAS)12.211.61.04 AU0.72 AU8 Oct 20259.80.33 AU25 Nov 202511.10.40 AU
C/2025 J1 (Borisov)9.118.64.60 AU4.31 AU11 Jun 202617.83.58 AU10 Dec 202617.33.08 AU
C/2025 F2 (SWAN)11.216.52.46 AU2.63 AU1 May 20255.50.33 AU2 May 20255.50.96 AU
C/2025 F1 (ATLAS)18.024.02.61 AU2.44 AU20 Apr 202518.91.07 AU27 Mar 202518.81.08 AU
C/2025 E1 (PANSTARRS)9.720.65.91 AU5.08 AU23 Sep 202618.84.00 AU24 Apr 202618.83.82 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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