C/2020 T2 (Palomar)
ephemeris	date	magn	radius	delta	ra	dec	elong	phase	PA
Nearest approach	12 May 2021	10.9	2.172 AU	1.408 AU	13h40m	+29°43'	127.0°	21.8°	151°
Perihelion	10 Jul 2021	10.5	2.053 AU	1.656 AU	14h00m	+05°28'	97.5°	29.4°	113°
Today	30 Apr 2025	38.5	11.913 AU	12.675 AU	01h14m	-19°42'	39.3°	3.1°	210°

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 T2 (Palomar) are:

            e (Eccentricity)                : 0.9924260
            q (Perihelion distance)         : 2.0532190
            i (Inclination)                 : 27.83910
            Ω (Longitude of ascending node) : 83.03960
            ω (Argument of perihelion)      : 150.35360
            L (Longitude of perihelion)     : 56.32446
            B (Latitude of perihelion)      : 13.35564
            T (Time of perihelion passage)  : 2459406.06640
            P (Orbital period in years)     : 4463.39

            Epoch                           : 2025 Apr 29
            Reference                       : MPEC 2022-TD3

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

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 gray curve is based on the absolute magnitude and slope parameter as calculated from the original MPEC, or the latest values provided by the MPC (11.00 + 5 log[∆] + 8.00 log[r]), whereas the red curve is being recalculated every 6 hours based on the available COBS/MPC observations (currently -.21 + 5 log[∆] + 30.84 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
2025-04-30 00:00 UT   01 14 40.9   -19 43 29    12.675   11.909   38.9    3.0   209   38.5 
2025-04-30 14:15 UT   01 14 52.7   -19 42 49    12.675   11.913   39.3    3.1   210   38.5 
2025-05-01 00:00 UT   01 15 00.8   -19 42 22    12.674   11.915   39.6    3.1   210   38.5 
2025-05-02 00:00 UT   01 15 20.6   -19 41 19    12.673   11.922   40.2    3.1   211   38.5 
2025-05-03 00:00 UT   01 15 40.3   -19 40 17    12.671   11.928   40.9    3.2   212   38.5 
2025-05-04 00:00 UT   01 15 59.9   -19 39 18    12.669   11.934   41.6    3.2   213   38.5 
2025-05-05 00:00 UT   01 16 19.3   -19 38 22    12.667   11.941   42.3    3.3   214   38.5 
2025-05-06 00:00 UT   01 16 38.6   -19 37 28    12.665   11.947   43.0    3.3   215   38.5 
2025-05-07 00:00 UT   01 16 57.8   -19 36 37    12.662   11.953   43.7    3.3   215   38.5 
2025-05-08 00:00 UT   01 17 16.9   -19 35 48    12.660   11.960   44.4    3.4   216   38.5 
2025-05-09 00:00 UT   01 17 35.8   -19 35 02    12.657   11.966   45.1    3.4   217   38.5 
2025-05-10 00:00 UT   01 17 54.6   -19 34 18    12.654   11.972   45.8    3.5   218   38.6 

    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.