(556) Phyllis
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	25 Jan 2026	14.8	2.551 AU	2.795 AU	15h43m	-24°17'	65.6°	20.6°
Opposition	27 May 2026	13.0	2.658 AU	1.648 AU	16h14m	-26°44'	174.5°	2.1°

The interactive orbit chart above shows the body'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 Phyllis are:

            e (Eccentricity)                : 0.1038903
            a (Semimajor axis)              : 2.4639024
            i (Inclination)                 : 5.24942
            Ω (Longitude of ascending node) : 285.97117
            ω (Argument of perihelion)      : 177.16344
            M (Mean anomaly)                : 87.62953
            Epoch                           : 2025 Nov 21

            L (Longitude of perihelion)     : 283.14649
            B (Latitude of perihelion)      : 0.25942
            P (Orbital period in years)     : 3.87            
        

The light curve chart below shows the estimated development of the minor planet's magnitude.

The all-sky chart below shows the path of the minor planet over the same period as the light curve. The current position is marked yellow.

The following chart shows the path of the minor planet in the next few days. The field of view is optimized for (~10x50) binoculars and finderscopes.

Ephemerides:

Date       Time       RA (2000)    DEC (2000)    delta   radius  elong  phase   PA    magn
2026-01-25 00:00 UT   15 43 35.2   -24 17 10     2.795    2.551   65.6   20.6   281   14.8 
2026-01-25 15:10 UT   15 44 30.6   -24 20 31     2.788    2.551   66.0   20.6   281   14.8 
2026-01-26 00:00 UT   15 45 02.7   -24 22 27     2.784    2.552   66.2   20.7   281   14.8 
2026-01-27 00:00 UT   15 46 29.5   -24 27 40     2.773    2.553   66.9   20.8   281   14.8 
2026-01-28 00:00 UT   15 47 55.8   -24 32 49     2.761    2.554   67.6   20.9   281   14.8 
2026-01-29 00:00 UT   15 49 21.5   -24 37 53     2.750    2.555   68.3   21.0   281   14.8 
2026-01-30 00:00 UT   15 50 46.5   -24 42 54     2.739    2.556   68.9   21.1   281   14.8 
2026-01-31 00:00 UT   15 52 11.0   -24 47 50     2.727    2.557   69.6   21.2   281   14.8 
2026-02-01 00:00 UT   15 53 34.7   -24 52 42     2.716    2.558   70.3   21.3   280   14.8 
2026-02-02 00:00 UT   15 54 57.8   -24 57 29     2.704    2.559   71.0   21.4   280   14.8 
2026-02-03 00:00 UT   15 56 20.3   -25 02 13     2.692    2.560   71.7   21.4   280   14.8 
2026-02-04 00:00 UT   15 57 42.0   -25 06 53     2.681    2.561   72.4   21.5   280   14.8 
2026-02-05 00:00 UT   15 59 03.1   -25 11 28     2.669    2.562   73.1   21.6   280   14.8 
2026-02-06 00:00 UT   16 00 23.4   -25 15 60     2.657    2.563   73.8   21.7   280   14.7 
2026-02-07 00:00 UT   16 01 43.1   -25 20 27     2.645    2.564   74.5   21.8   280   14.7 
2026-02-08 00:00 UT   16 03 01.9   -25 24 50     2.633    2.565   75.2   21.8   280   14.7 
2026-02-09 00:00 UT   16 04 20.0   -25 29 10     2.621    2.566   75.9   21.9   280   14.7 
2026-02-10 00:00 UT   16 05 37.3   -25 33 25     2.609    2.567   76.6   22.0   280   14.7 
2026-02-11 00:00 UT   16 06 53.8   -25 37 37     2.597    2.568   77.3   22.0   280   14.7 
2026-02-12 00:00 UT   16 08 09.5   -25 41 44     2.585    2.569   78.0   22.1   280   14.7 
2026-02-13 00:00 UT   16 09 24.3   -25 45 48     2.573    2.570   78.7   22.1   280   14.7 
2026-02-14 00:00 UT   16 10 38.3   -25 49 47     2.561    2.571   79.5   22.2   280   14.7 
2026-02-15 00:00 UT   16 11 51.3   -25 53 43     2.549    2.572   80.2   22.2   280   14.7 
2026-02-16 00:00 UT   16 13 03.5   -25 57 35     2.536    2.573   80.9   22.3   280   14.7 
2026-02-17 00:00 UT   16 14 14.8   -26 01 23     2.524    2.574   81.7   22.3   280   14.7 
2026-02-18 00:00 UT   16 15 25.2   -26 05 08     2.512    2.575   82.4   22.4   279   14.7 
2026-02-19 00:00 UT   16 16 34.5   -26 08 48     2.500    2.576   83.1   22.4   279   14.6 
2026-02-20 00:00 UT   16 17 43.0   -26 12 25     2.487    2.577   83.9   22.4   279   14.6 
2026-02-21 00:00 UT   16 18 50.4   -26 15 58     2.475    2.578   84.6   22.5   279   14.6 
2026-02-22 00:00 UT   16 19 56.8   -26 19 27     2.463    2.579   85.4   22.5   279   14.6 

    Terminology:
            
    delta:  distance between minor planet and earth in AU
    radius: distance between minor planet 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-minor planet)    
    phase:  phase angle in degrees (angle sun-minor planet-earth)        
    AU:     Astronomical Unit (mean distance between earth and sun: 149597870.7 km
    

Orbital elements provided by 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.