C/2022 P3 (ZTF)
ephemeris	date	magn	radius	delta	ra	dec	elong	phase	PA
Perihelion	27 Jul 2022	18.9	2.570 AU	3.297 AU	05h44m	+23°33'	37.7°	14.0°	269°
Nearest approach	30 Nov 2022	18.4	2.894 AU	2.257 AU	08h31m	+65°14'	121.2°	17.0°	253°
Today	19 Sep 2026	25.5	12.363 AU	12.932 AU	15h04m	+26°08'	53.6°	3.8°	71°

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. This lightcurve is being recalculated every 6 hours based on the available COBS/MPC observations (currently 14.1 + 5 log[∆] + 5.4 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 C/2022 P3 (ZTF) are:

    e (Eccentricity)                : 0.9904540
    q (Perihelion distance)         : 2.5701270
    i (Inclination)                 : 59.50430
    Ω (Longitude of ascending node) : 72.24010
    ω (Argument of perihelion)      : 0.26720
    L (Longitude of perihelion)     : 72.37570
    B (Latitude of perihelion)      : 0.23024
    T (Time of perihelion passage)  : 2459787.94650
    P (Orbital period in years)     : 4417.74

    Epoch                           : 2026 May 29
    Reference                       : MPC194181

    Classification(s):              : Nearly isotropic; Returning (a < 10000 AU); External (P > 200 years)

Ephemerides

Date       Time       RA (2000)    DEC (2000)    delta   radius  elong  phase   PA    magn
2026-09-18 00:00 UT   15 04 05.6   +26 14 35    12.912   12.354   54.4    3.8    72   25.5 
2026-09-19 00:00 UT   15 04 19.6   +26 10 50    12.926   12.360   53.9    3.8    71   25.5 
2026-09-19 11:54 UT   15 04 26.7   +26 08 58    12.932   12.363   53.6    3.8    71   25.5 
2026-09-20 00:00 UT   15 04 33.9   +26 07 05    12.939   12.366   53.3    3.7    71   25.5 
2026-09-21 00:00 UT   15 04 48.3   +26 03 23    12.953   12.373   52.8    3.7    70   25.5 
2026-09-22 00:00 UT   15 05 02.9   +25 59 42    12.966   12.379   52.3    3.7    69   25.5 
2026-09-23 00:00 UT   15 05 17.8   +25 56 03    12.980   12.385   51.8    3.7    68   25.5 
2026-09-24 00:00 UT   15 05 32.9   +25 52 26    12.993   12.391   51.3    3.6    67   25.5 
2026-09-25 00:00 UT   15 05 48.1   +25 48 50    13.006   12.397   50.8    3.6    66   25.5 
2026-09-26 00:00 UT   15 06 03.6   +25 45 16    13.018   12.403   50.3    3.6    65   25.5 
2026-09-27 00:00 UT   15 06 19.2   +25 41 44    13.031   12.409   49.9    3.5    64   25.5 
2026-09-28 00:00 UT   15 06 35.1   +25 38 14    13.043   12.415   49.4    3.5    63   25.5 
2026-09-29 00:00 UT   15 06 51.1   +25 34 46    13.056   12.421   48.9    3.5    62   25.6 

    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.