(133) Cyrene
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	6 Jan 2026	12.8	3.370 AU	2.391 AU	07h26m	+27°12'	173.5°	1.9°
Opposition	8 Jan 2026	12.8	3.368 AU	2.388 AU	07h24m	+27°13'	174.8°	1.5°

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)                : 0.1302969
            a (Semimajor axis)              : 3.0741951
            i (Inclination)                 : 7.22452
            Ω (Longitude of ascending node) : 318.66882
            ω (Argument of perihelion)      : 291.64999
            M (Mean anomaly)                : 219.01980
            Epoch                           : 2025 Nov 21

            L (Longitude of perihelion)     : 250.47587
            B (Latitude of perihelion)      : -6.71243
            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
2026-01-06 00:00 UT   07 26 39.0   +27 12 27     2.391    3.370  173.5    1.9   226   12.8 
2026-01-06 23:55 UT   07 25 43.2   +27 13 03     2.390    3.369  174.1    1.7   216   12.8 
2026-01-07 00:00 UT   07 25 43.0   +27 13 03     2.390    3.369  174.1    1.7   216   12.8 
2026-01-08 00:00 UT   07 24 46.8   +27 13 35     2.388    3.368  174.6    1.6   204   12.8 
2026-01-09 00:00 UT   07 23 50.5   +27 14 04     2.387    3.368  174.9    1.5   191   12.8 
2026-01-10 00:00 UT   07 22 54.1   +27 14 29     2.386    3.367  174.8    1.5   177   12.8 
2026-01-11 00:00 UT   07 21 57.6   +27 14 50     2.386    3.366  174.5    1.6   165   12.8 
2026-01-12 00:00 UT   07 21 01.1   +27 15 07     2.386    3.365  173.9    1.8   154   12.8 
2026-01-13 00:00 UT   07 20 04.8   +27 15 21     2.386    3.364  173.1    2.0   145   12.8 
2026-01-14 00:00 UT   07 19 08.5   +27 15 31     2.386    3.364  172.3    2.3   138   12.8 
2026-01-15 00:00 UT   07 18 12.5   +27 15 36     2.387    3.363  171.3    2.5   133   12.8 
2026-01-16 00:00 UT   07 17 16.7   +27 15 38     2.388    3.362  170.3    2.8   128   12.9 
2026-01-17 00:00 UT   07 16 21.2   +27 15 36     2.390    3.361  169.3    3.1   125   12.9 
2026-01-18 00:00 UT   07 15 26.1   +27 15 29     2.391    3.360  168.2    3.4   122   12.9 
2026-01-19 00:00 UT   07 14 31.4   +27 15 19     2.393    3.360  167.1    3.8   119   12.9 
2026-01-20 00:00 UT   07 13 37.2   +27 15 04     2.396    3.359  165.9    4.1   117   12.9 
2026-01-21 00:00 UT   07 12 43.5   +27 14 45     2.398    3.358  164.8    4.4   115   13.0 
2026-01-22 00:00 UT   07 11 50.5   +27 14 23     2.401    3.357  163.7    4.7   114   13.0 
2026-01-23 00:00 UT   07 10 58.0   +27 13 56     2.404    3.356  162.5    5.1   112   13.0 
2026-01-24 00:00 UT   07 10 06.3   +27 13 25     2.408    3.355  161.4    5.4   111   13.0 
2026-01-25 00:00 UT   07 09 15.3   +27 12 50     2.412    3.355  160.2    5.7   110   13.0 
2026-01-26 00:00 UT   07 08 25.1   +27 12 11     2.416    3.354  159.0    6.0   109   13.1 
2026-01-27 00:00 UT   07 07 35.7   +27 11 28     2.420    3.353  157.9    6.3   108   13.1 
2026-01-28 00:00 UT   07 06 47.2   +27 10 41     2.425    3.352  156.7    6.7   107   13.1 
2026-01-29 00:00 UT   07 05 59.7   +27 09 50     2.430    3.351  155.6    7.0   107   13.1 
2026-01-30 00:00 UT   07 05 13.1   +27 08 56     2.435    3.350  154.4    7.3   106   13.1 
2026-01-31 00:00 UT   07 04 27.5   +27 07 58     2.440    3.350  153.2    7.6   105   13.1 
2026-02-01 00:00 UT   07 03 42.9   +27 06 56     2.446    3.349  152.1    7.9   105   13.2 
2026-02-02 00:00 UT   07 02 59.4   +27 05 51     2.452    3.348  150.9    8.2   104   13.2 
2026-02-03 00:00 UT   07 02 17.0   +27 04 42     2.458    3.347  149.8    8.5   104   13.2 
2026-02-04 00:00 UT   07 01 35.8   +27 03 30     2.465    3.346  148.6    8.8   103   13.2 
2026-02-05 00:00 UT   07 00 55.7   +27 02 15     2.472    3.345  147.5    9.1   103   13.2 

    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.