C/2020 T4 (PANSTARRS)
ephemeris date magn radius delta ra dec elong phase PA
Nearest approach30 Nov 202019.03.264 AU2.356 AU02h30m+28°49'152.7°8.0°98°
Perihelion5 Jul 202117.82.190 AU2.587 AU07h16m+78°53'56.2°22.7°5°
Today25 Apr 202425.59.481 AU8.603 AU15h00m-42°33'149.2°3.1°337°
C/2020 T4 (PANSTARRS)- 2024-04-25
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.)

The orbital elements of C/2020 T4 (PANSTARRS) are:

            e (Eccentricity)                : 1.0004040
            q (Perihelion distance)         : 2.1901780
            i (Inclination)                 : 83.85300
            Ω (Longitude of ascending node) : 50.62000
            ω (Argument of perihelion)      : 79.58850
            L (Longitude of perihelion)     : 80.85246
            B (Latitude of perihelion)      : 77.92657
            T (Time of perihelion passage)  : 2459401.06920

            Epoch                           : 2024 Apr 25
            Reference                       : MPEC 2021-N06

            Classification(s):              : Nearly isotropic; New (a > 10000 AU)
        

The light curve chart below shows the estimated development of the comet's magnitude. Blue and black dots are visual and photometric CCD observations respectively from COBS or the MPC. 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. (13.00 + 5 log[∆] + 8.00 log[r]).


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.
A more printer-friendly version of the same chart can be found further down this page as well.


The following chart shows the current location of the comet in a smaller, upside-down telescopic field of view.


A printable version of the short-term path of the comet in a field of view that is optimized for (~10x50) binoculars and finderscopes.



Ephemerides:
Date       Time       RA (2000)    DEC (2000)    delta   radius  elong  phase   PA    magn
2024-04-25 00:00 UT   15 01 31.3   -42 33 16     8.601    9.475  148.6    3.2   336   25.5 
2024-04-25 21:46 UT   15 00 58.2   -42 33 35     8.603    9.481  149.2    3.1   337   25.5 
2024-04-26 00:00 UT   15 00 54.8   -42 33 37     8.603    9.482  149.2    3.1   337   25.5 
2024-04-27 00:00 UT   15 00 18.2   -42 33 54     8.605    9.489  149.8    3.1   339   25.5 
2024-04-28 00:00 UT   14 59 41.5   -42 34 06     8.607    9.496  150.4    3.0   341   25.5 
2024-04-29 00:00 UT   14 59 04.7   -42 34 15     8.609    9.503  151.0    2.9   343   25.5 
2024-04-30 00:00 UT   14 58 27.9   -42 34 20     8.612    9.510  151.5    2.9   345   25.5 
2024-05-01 00:00 UT   14 57 51.0   -42 34 20     8.615    9.517  152.0    2.9   347   25.5 
2024-05-02 00:00 UT   14 57 14.0   -42 34 17     8.618    9.523  152.4    2.8   350   25.5 
2024-05-03 00:00 UT   14 56 37.0   -42 34 10     8.622    9.530  152.9    2.8   352   25.5 
2024-05-04 00:00 UT   14 56 00.0   -42 33 59     8.626    9.537  153.3    2.7   354   25.5 
2024-05-05 00:00 UT   14 55 23.1   -42 33 44     8.630    9.544  153.6    2.7   356   25.5 


    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.