C/2020 F5 (MASTER)
ephemeris	date	magn	radius	delta	ra	dec	elong	phase	PA
Perihelion	16 Mar 2021	15.2	4.327 AU	4.992 AU	22h38m	-42°39'	43.7°	9.1°	205°
Nearest approach	21 Aug 2021	14.7	4.515 AU	3.586 AU	23h13m	-32°52'	153.6°	5.7°	319°
Today	31 Oct 2024	20.2	10.488 AU	9.739 AU	00h15m	+48°17'	137.0°	3.7°	132°

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 F5 (MASTER) are:

            e (Eccentricity)                : 0.9741320
            q (Perihelion distance)         : 4.3269780
            i (Inclination)                 : 52.21870
            Ω (Longitude of ascending node) : 350.51760
            ω (Argument of perihelion)      : 310.65820
            L (Longitude of perihelion)     : 315.01649
            B (Latitude of perihelion)      : -36.83919
            T (Time of perihelion passage)  : 2459290.12040
            P (Orbital period in years)     : 2163.38

            Epoch                           : 2024 Oct 29
            Reference                       : MPEC 2024-BE0

            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 (6.50 + 5 log[∆] + 8.00 log[r]), whereas the red curve is being recalculated every 6 hours based on the available COBS/MPC observations (currently 5.87 + 5 log[∆] + 9.21 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
2024-10-31 00:00 UT   00 15 18.7   +48 17 42     9.739   10.487  137.0    3.7   132   20.2 
2024-10-31 01:08 UT   00 15 17.6   +48 17 35     9.739   10.488  137.0    3.7   132   20.2 
2024-11-01 00:00 UT   00 14 54.8   +48 15 18     9.747   10.493  136.8    3.7   130   20.2 
2024-11-02 00:00 UT   00 14 31.3   +48 12 52     9.756   10.499  136.5    3.7   129   20.2 
2024-11-03 00:00 UT   00 14 08.3   +48 10 22     9.765   10.504  136.3    3.7   127   20.2 
2024-11-04 00:00 UT   00 13 45.7   +48 07 51     9.774   10.510  136.0    3.8   126   20.2 
2024-11-05 00:00 UT   00 13 23.5   +48 05 16     9.783   10.516  135.6    3.8   124   20.2 
2024-11-06 00:00 UT   00 13 01.8   +48 02 39     9.793   10.521  135.3    3.8   123   20.2 
2024-11-07 00:00 UT   00 12 40.5   +47 59 60     9.803   10.527  135.0    3.8   121   20.2 
2024-11-08 00:00 UT   00 12 19.7   +47 57 18     9.813   10.532  134.6    3.8   120   20.2 
2024-11-09 00:00 UT   00 11 59.3   +47 54 35     9.823   10.538  134.2    3.9   118   20.2 
2024-11-10 00:00 UT   00 11 39.5   +47 51 49     9.834   10.544  133.8    3.9   117   20.2 

    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.