P/2024 R3 (PANSTARRS)
ephemeris	date	magn	radius	delta	ra	dec	elong	phase	PA
Perihelion	10 May 2024	21.0	2.338 AU	2.887 AU	00h23m	-07°20'	48.2°	18.8°	238°
Nearest approach	17 Oct 2024	19.9	2.509 AU	1.522 AU	02h08m	+11°38'	169.9°	4.0°	257°
Today	24 Aug 2026	24.4	3.957 AU	4.932 AU	09h58m	+24°16'	13.6°	3.4°	345°

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. (15.0 + 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 R3 (PANSTARRS) are:

    e (Eccentricity)                : 0.2694080
    q (Perihelion distance)         : 2.3383320
    i (Inclination)                 : 14.70510
    Ω (Longitude of ascending node) : 32.78210
    ω (Argument of perihelion)      : 309.82800
    L (Longitude of perihelion)     : 343.55131
    B (Latitude of perihelion)      : -11.24150
    T (Time of perihelion passage)  : 2460441.04820
    P (Orbital period in years)     : 5.73

    Epoch                           : 2026 Aug 13
    Reference                       : MPC194191

    Classification(s):              : Ecliptic; Active asteroid
    Tisserand (Jupiter)             : 3.087

Ephemerides

Date       Time       RA (2000)    DEC (2000)    delta   radius  elong  phase   PA    magn
2026-08-23 00:00 UT   09 56 34.1   +24 26 24     4.934    3.955   13.0    3.3   349   24.4 
2026-08-24 00:00 UT   09 57 43.6   +24 20 24     4.933    3.956   13.4    3.4   347   24.4 
2026-08-24 15:09 UT   09 58 27.4   +24 16 38     4.932    3.957   13.6    3.4   345   24.4 
2026-08-25 00:00 UT   09 58 52.9   +24 14 25     4.932    3.957   13.8    3.5   344   24.4 
2026-08-26 00:00 UT   10 00 02.1   +24 08 27     4.931    3.958   14.2    3.6   342   24.4 
2026-08-27 00:00 UT   10 01 11.2   +24 02 29     4.929    3.959   14.6    3.7   340   24.4 
2026-08-28 00:00 UT   10 02 20.2   +23 56 32     4.927    3.960   15.0    3.8   338   24.4 
2026-08-29 00:00 UT   10 03 29.0   +23 50 36     4.926    3.961   15.5    3.9   336   24.4 
2026-08-30 00:00 UT   10 04 37.6   +23 44 40     4.923    3.962   16.0    4.0   334   24.4 
2026-08-31 00:00 UT   10 05 46.2   +23 38 45     4.921    3.963   16.5    4.1   333   24.4 
2026-09-01 00:00 UT   10 06 54.5   +23 32 51     4.919    3.964   17.0    4.3   331   24.4 
2026-09-02 00:00 UT   10 08 02.7   +23 26 57     4.916    3.965   17.5    4.4   330   24.4 
2026-09-03 00:00 UT   10 09 10.8   +23 21 05     4.913    3.966   18.0    4.5   328   24.4 

    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.