(556) Phyllis
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Opposition	27 May 2026	12.9	2.658 AU	1.648 AU	16h14m	-26°44'	174.5°	2.1°
Today	10 Jul 2026	13.9	2.685 AU	1.899 AU	15h44m	-23°39'	131.7°	16.4°

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)                : 0.1037877
            a (Semimajor axis)              : 2.4643068
            i (Inclination)                 : 5.24937
            Ω (Longitude of ascending node) : 285.97156
            ω (Argument of perihelion)      : 177.24163
            M (Mean anomaly)                : 138.51492
            Epoch                           : 2026 Jun 09

            L (Longitude of perihelion)     : 283.22474
            B (Latitude of perihelion)      : 0.25227
            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
2026-07-10 00:00 UT   15 44 35.3   -23 39 19     1.899    2.685  131.7   16.4    99   13.9 
2026-07-10 07:27 UT   15 44 32.5   -23 38 20     1.902    2.685  131.4   16.5   100   13.9 
2026-07-11 00:00 UT   15 44 26.8   -23 36 12     1.909    2.685  130.7   16.7   100   13.9 
2026-07-12 00:00 UT   15 44 19.9   -23 33 10     1.919    2.686  129.7   16.9   100   14.0 
2026-07-13 00:00 UT   15 44 14.7   -23 30 14     1.930    2.686  128.8   17.2   100   14.0 
2026-07-14 00:00 UT   15 44 11.2   -23 27 25     1.941    2.687  127.8   17.4   100   14.0 
2026-07-15 00:00 UT   15 44 09.3   -23 24 41     1.952    2.687  126.8   17.6   100   14.0 
2026-07-16 00:00 UT   15 44 09.1   -23 22 02     1.963    2.688  125.9   17.8   100   14.0 
2026-07-17 00:00 UT   15 44 10.6   -23 19 30     1.974    2.688  124.9   18.1   100   14.1 
2026-07-18 00:00 UT   15 44 13.7   -23 17 04     1.985    2.689  124.0   18.3   101   14.1 
2026-07-19 00:00 UT   15 44 18.4   -23 14 44     1.997    2.689  123.0   18.5   101   14.1 
2026-07-20 00:00 UT   15 44 24.8   -23 12 29     2.008    2.690  122.1   18.7   101   14.1 
2026-07-21 00:00 UT   15 44 32.8   -23 10 21     2.020    2.690  121.2   18.9   101   14.1 
2026-07-22 00:00 UT   15 44 42.3   -23 08 18     2.032    2.691  120.2   19.0   101   14.1 
2026-07-23 00:00 UT   15 44 53.4   -23 06 22     2.044    2.691  119.3   19.2   101   14.2 
2026-07-24 00:00 UT   15 45 06.1   -23 04 31     2.056    2.692  118.4   19.4   101   14.2 
2026-07-25 00:00 UT   15 45 20.3   -23 02 46     2.068    2.692  117.5   19.6   101   14.2 
2026-07-26 00:00 UT   15 45 36.0   -23 01 07     2.080    2.693  116.6   19.7   101   14.2 
2026-07-27 00:00 UT   15 45 53.3   -22 59 33     2.092    2.693  115.7   19.9   101   14.2 
2026-07-28 00:00 UT   15 46 12.0   -22 58 05     2.105    2.693  114.8   20.0   101   14.3 
2026-07-29 00:00 UT   15 46 32.2   -22 56 43     2.117    2.694  113.9   20.1   101   14.3 
2026-07-30 00:00 UT   15 46 53.9   -22 55 26     2.130    2.694  113.1   20.3   101   14.3 
2026-07-31 00:00 UT   15 47 17.0   -22 54 14     2.142    2.695  112.2   20.4   101   14.3 
2026-08-01 00:00 UT   15 47 41.5   -22 53 08     2.155    2.695  111.3   20.5   101   14.3 
2026-08-02 00:00 UT   15 48 07.4   -22 52 07     2.168    2.696  110.5   20.7   101   14.3 
2026-08-03 00:00 UT   15 48 34.7   -22 51 11     2.181    2.696  109.6   20.8   101   14.4 
2026-08-04 00:00 UT   15 49 03.4   -22 50 21     2.193    2.697  108.8   20.9   102   14.4 
2026-08-05 00:00 UT   15 49 33.4   -22 49 35     2.206    2.697  107.9   21.0   102   14.4 
2026-08-06 00:00 UT   15 50 04.8   -22 48 55     2.219    2.697  107.1   21.1   102   14.4 
2026-08-07 00:00 UT   15 50 37.5   -22 48 19     2.232    2.698  106.2   21.2   102   14.4 
2026-08-08 00:00 UT   15 51 11.6   -22 47 48     2.246    2.698  105.4   21.2   102   14.4 
2026-08-09 00:00 UT   15 51 46.9   -22 47 22     2.259    2.699  104.6   21.3   102   14.5 

    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.