(133) Cyrene
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	23 Oct 2026	14.1	3.056 AU	3.733 AU	11h13m	+03°07'	41.2°	12.4°
Opposition	26 Mar 2027	12.0	2.863 AU	1.872 AU	12h09m	-09°55'	171.8°	2.9°

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 Cyrene are:

            e (Eccentricity)                : 0.1295230
            a (Semimajor axis)              : 3.0728365
            i (Inclination)                 : 7.23512
            Ω (Longitude of ascending node) : 318.62826
            ω (Argument of perihelion)      : 292.17256
            M (Mean anomaly)                : 254.96225
            Epoch                           : 2026 Jun 09

            L (Longitude of perihelion)     : 250.96136
            B (Latitude of perihelion)      : -6.69754
            P (Orbital period in years)     : 5.39            
        

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
2026-10-23 00:00 UT   11 13 16.3   +03 07 35     3.733    3.056   41.2   12.4   291   14.1 
2026-10-23 06:54 UT   11 13 37.8   +03 04 54     3.730    3.056   41.4   12.4   291   14.1 
2026-10-24 00:00 UT   11 14 30.9   +02 58 15     3.722    3.055   41.9   12.6   291   14.1 
2026-10-25 00:00 UT   11 15 45.1   +02 48 55     3.712    3.053   42.5   12.7   291   14.1 
2026-10-26 00:00 UT   11 16 59.2   +02 39 35     3.700    3.052   43.2   12.9   291   14.1 
2026-10-27 00:00 UT   11 18 12.9   +02 30 15     3.689    3.051   43.8   13.0   291   14.1 
2026-10-28 00:00 UT   11 19 26.4   +02 20 56     3.678    3.050   44.5   13.2   291   14.0 
2026-10-29 00:00 UT   11 20 39.6   +02 11 37     3.667    3.048   45.1   13.4   291   14.0 
2026-10-30 00:00 UT   11 21 52.6   +02 02 19     3.655    3.047   45.8   13.5   291   14.0 
2026-10-31 00:00 UT   11 23 05.3   +01 53 01     3.644    3.046   46.5   13.7   291   14.0 
2026-11-01 00:00 UT   11 24 17.7   +01 43 43     3.632    3.044   47.1   13.8   291   14.0 
2026-11-02 00:00 UT   11 25 29.8   +01 34 26     3.620    3.043   47.8   14.0   291   14.0 
2026-11-03 00:00 UT   11 26 41.6   +01 25 10     3.608    3.042   48.4   14.1   291   14.0 
2026-11-04 00:00 UT   11 27 53.1   +01 15 54     3.596    3.041   49.1   14.3   291   14.0 
2026-11-05 00:00 UT   11 29 04.4   +01 06 40     3.584    3.039   49.8   14.4   291   14.0 
2026-11-06 00:00 UT   11 30 15.3   +00 57 26     3.572    3.038   50.5   14.6   292   14.0 
2026-11-07 00:00 UT   11 31 25.8   +00 48 12     3.559    3.037   51.1   14.7   292   14.0 
2026-11-08 00:00 UT   11 32 36.1   +00 38 60     3.547    3.035   51.8   14.9   292   14.0 
2026-11-09 00:00 UT   11 33 46.0   +00 29 49     3.534    3.034   52.5   15.0   292   14.0 
2026-11-10 00:00 UT   11 34 55.5   +00 20 38     3.522    3.033   53.1   15.1   292   14.0 
2026-11-11 00:00 UT   11 36 04.8   +00 11 29     3.509    3.032   53.8   15.3   292   14.0 
2026-11-12 00:00 UT   11 37 13.6   +00 02 21     3.496    3.030   54.5   15.4   292   14.0 
2026-11-13 00:00 UT   11 38 22.1   +00 06 46     3.483    3.029   55.2   15.6   292   14.0 
2026-11-14 00:00 UT   11 39 30.2   +00 15 52     3.470    3.028   55.9   15.7   292   14.0 
2026-11-15 00:00 UT   11 40 37.9   +00 24 56     3.457    3.027   56.6   15.8   292   14.0 
2026-11-16 00:00 UT   11 41 45.3   +00 33 59     3.444    3.025   57.3   16.0   292   14.0 
2026-11-17 00:00 UT   11 42 52.3   +00 43 01     3.430    3.024   57.9   16.1   292   14.0 

    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.