407P/PANSTARRS-Fuls
ephemeris	date	magn	radius	delta	ra	dec	elong	phase	PA
Today	20 Jan 2026	19.0	2.530 AU	1.559 AU	07h23m	+26°23'	168.1°	4.6°	119°
Nearest approach	23 Jan 2026	19.0	2.521 AU	1.558 AU	07h20m	+26°32'	164.7°	5.9°	114°
Perihelion	25 Jul 2026	19.7	2.183 AU	2.928 AU	10h42m	+12°06'	35.6°	15.7°	107°

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. (14.0 + 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 407P/PANSTARRS-Fuls are:

    e (Eccentricity)                : 0.3753390
    q (Perihelion distance)         : 2.1833190
    i (Inclination)                 : 4.87260
    Ω (Longitude of ascending node) : 80.23900
    ω (Argument of perihelion)      : 92.97320
    L (Longitude of perihelion)     : 353.22296
    B (Latitude of perihelion)      : 4.86603
    T (Time of perihelion passage)  : 2461246.90790
    P (Orbital period in years)     : 6.53

    Epoch                           : 2026 Jan 19
    Reference                       : MPEC 2025-W75

    Classification(s):              : Ecliptic; Active asteroid
    Tisserand (Jupiter)             : 3.002

Ephemerides

Date       Time       RA (2000)    DEC (2000)    delta   radius  elong  phase   PA    magn
2026-01-19 00:00 UT   07 24 23.6   +26 18 59     1.561    2.534  169.4    4.1   122   19.0 
2026-01-20 00:00 UT   07 23 28.8   +26 22 28     1.560    2.531  168.3    4.5   119   19.0 
2026-01-20 04:40 UT   07 23 18.2   +26 23 08     1.559    2.530  168.1    4.6   119   19.0 
2026-01-21 00:00 UT   07 22 34.5   +26 25 52     1.559    2.528  167.1    5.0   117   19.0 
2026-01-22 00:00 UT   07 21 40.6   +26 29 11     1.559    2.525  166.0    5.4   116   19.0 
2026-01-23 00:00 UT   07 20 47.2   +26 32 25     1.558    2.521  164.8    5.9   114   19.0 
2026-01-24 00:00 UT   07 19 54.5   +26 35 33     1.558    2.518  163.6    6.3   113   19.0 
2026-01-25 00:00 UT   07 19 02.6   +26 38 36     1.559    2.515  162.4    6.8   112   19.0 
2026-01-26 00:00 UT   07 18 11.4   +26 41 34     1.559    2.512  161.3    7.2   111   19.0 
2026-01-27 00:00 UT   07 17 21.1   +26 44 25     1.560    2.509  160.1    7.7   110   19.0 
2026-01-28 00:00 UT   07 16 31.8   +26 47 11     1.562    2.505  158.9    8.1   109   19.0 
2026-01-29 00:00 UT   07 15 43.4   +26 49 51     1.563    2.502  157.7    8.6   109   19.0 
2026-01-30 00:00 UT   07 14 56.2   +26 52 26     1.565    2.499  156.6    9.0   108   19.0 

    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.