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P/2024 R1 (PANSTARRS)
ephemeris date magn radius delta ra dec elong phase PA
Perihelion16 Jun 202421.11.754 AU1.361 AU 23h47m-15°13'94.0°35.3°247°
Nearest approach7 Sep 202420.81.908 AU0.991 AU 01h16m-19°07'145.4°17.5°288°
Today21 Oct 202526.53.842 AU3.420 AU 06h44m+23°18'107.8°14.3°274°
P/2024 R1 (PANSTARRS)- 2025-10-21
astro.vanbuitenen.nl


 
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The interactive orbit chart above shows the comet's path through the solar system and its position at the given date. Green and blue lines are shown perpendicular to the ecliptic plane: Green if the path is above the ecliptic plane, blue if it is below. (Left-click and drag to rotate the view; Right-click and drag to move the view; Use scroll wheel to zoom in our out.)


Light curve

The light curve chart below shows the estimated development of the comet's magnitude. Blue and black dots are visual and photometric CCD observations from COBS. The light curve is based on the absolute magnitude and slope parameter as calculated from an MPEC, or the latest values provided by the minor planet center. (18.0 + 5 log[∆] + 10.0 log[r]). An additional green curve is displayed when an increase in apparent brightness is expected due to forward scattering of sunlight, which occurs when a dust-rich comet is located between the Earth and the Sun. (See Marcus 2007)



Charts

The all-sky chart below shows the path of the comet over the same period as the light curve. The comet's current position is marked yellow.





The following chart shows the short-term path of the comet in a field of view that is optimized for (~10x50) binoculars and finderscopes.




Orbital elements

The orbital elements of P/2024 R1 (PANSTARRS) are: 

    e (Eccentricity)                : 0.4930420
    q (Perihelion distance)         : 1.7537530
    i (Inclination)                 : 12.72890
    Ω (Longitude of ascending node) : 84.98520
    ω (Argument of perihelion)      : 230.82350
    L (Longitude of perihelion)     : 135.10883
    B (Latitude of perihelion)      : -9.83474
    T (Time of perihelion passage)  : 2460477.55170
    P (Orbital period in years)     : 6.43

    Epoch                           : 2025 Oct 20
    Reference                       : MPEC 2024-TP3

    Classification(s):              : Ecliptic; Jupiter family
    Tisserand (Jupiter)             : 2.888

Ephemerides

Date       Time       RA (2000)    DEC (2000)    delta   radius  elong  phase   PA    magn
2025-10-20 00:00 UT   06 44 52.0   +23 15 35     3.437    3.836  106.2   14.4   274   26.5 
2025-10-21 00:00 UT   06 44 55.3   +23 17 12     3.426    3.840  107.2   14.3   274   26.5 
2025-10-21 14:21 UT   06 44 56.7   +23 18 10     3.420    3.842  107.8   14.3   274   26.5 
2025-10-22 00:00 UT   06 44 57.3   +23 18 50     3.415    3.844  108.2   14.2   274   26.5 
2025-10-23 00:00 UT   06 44 58.2   +23 20 30     3.405    3.848  109.2   14.1   274   26.5 
2025-10-24 00:00 UT   06 44 57.9   +23 22 12     3.394    3.852  110.2   14.0   274   26.5 
2025-10-25 00:00 UT   06 44 56.3   +23 23 56     3.383    3.856  111.2   13.9   274   26.5 
2025-10-26 00:00 UT   06 44 53.5   +23 25 42     3.373    3.860  112.2   13.8   274   26.5 
2025-10-27 00:00 UT   06 44 49.4   +23 27 30     3.363    3.864  113.2   13.7   274   26.5 
2025-10-28 00:00 UT   06 44 44.2   +23 29 20     3.352    3.868  114.2   13.6   274   26.5 
2025-10-29 00:00 UT   06 44 37.7   +23 31 12     3.342    3.872  115.2   13.4   274   26.5 
2025-10-30 00:00 UT   06 44 29.9   +23 33 05     3.332    3.876  116.3   13.3   274   26.5 
2025-10-31 00:00 UT   06 44 20.9   +23 35 01     3.322    3.880  117.3   13.1   274   26.5 




    Terminology:
            
    delta:  distance between comet and earth in AU
    radius: distance between comet and sun in AU
    magn:   magnitude (brightness) estimate    
    ra:     right ascension in hours (24h = 360deg)
    dec:    declination in degrees
    elong:  elongation in degrees (angle sun-earth-comet)    
    phase:  phase angle in degrees (angle sun-comet-earth)        
    AU:     Astronomical Unit (mean distance between earth and sun: 149597870.7 km

Orbital elements usually provided by the MPC (Minor Planet Center).
Observations contributed by observers worldwide, via COBS (Comet Observation Database) or the MPC (Minor Planet Center)
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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