(133) Cyrene
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	3 Jun 2026	14.3	3.227 AU	3.847 AU	08h01m	+21°18'	46.0°	13.1°
Opposition	26 Mar 2027	12.0	2.860 AU	1.869 AU	12h10m	-09°59'	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)                : 0.1302969
            a (Semimajor axis)              : 3.0741951
            i (Inclination)                 : 7.22452
            Ω (Longitude of ascending node) : 318.66883
            ω (Argument of perihelion)      : 291.64999
            M (Mean anomaly)                : 219.01980
            Epoch                           : 2025 Nov 21

            L (Longitude of perihelion)     : 250.47588
            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
2026-06-03 00:00 UT   08 01 36.6   +21 18 32     3.847    3.227   46.0   13.1   101   14.3 
2026-06-03 02:19 UT   08 01 43.9   +21 18 04     3.848    3.227   46.0   13.1   101   14.3 
2026-06-04 00:00 UT   08 02 52.3   +21 13 42     3.856    3.226   45.4   12.9   101   14.3 
2026-06-05 00:00 UT   08 04 08.3   +21 08 50     3.865    3.225   44.7   12.8   101   14.3 
2026-06-06 00:00 UT   08 05 24.6   +21 03 55     3.874    3.224   44.1   12.7   101   14.3 
2026-06-07 00:00 UT   08 06 41.2   +20 58 57     3.883    3.222   43.4   12.5   101   14.3 
2026-06-08 00:00 UT   08 07 58.0   +20 53 57     3.891    3.221   42.8   12.4   101   14.3 
2026-06-09 00:00 UT   08 09 15.2   +20 48 53     3.900    3.220   42.2   12.2   102   14.3 
2026-06-10 00:00 UT   08 10 32.6   +20 43 47     3.908    3.219   41.5   12.1   102   14.3 
2026-06-11 00:00 UT   08 11 50.3   +20 38 38     3.916    3.218   40.9   11.9   102   14.3 
2026-06-12 00:00 UT   08 13 08.3   +20 33 26     3.924    3.217   40.2   11.8   102   14.3 
2026-06-13 00:00 UT   08 14 26.5   +20 28 11     3.932    3.216   39.6   11.6   102   14.2 
2026-06-14 00:00 UT   08 15 44.9   +20 22 53     3.940    3.214   38.9   11.5   102   14.2 
2026-06-15 00:00 UT   08 17 03.6   +20 17 32     3.948    3.213   38.3   11.3   102   14.2 
2026-06-16 00:00 UT   08 18 22.6   +20 12 09     3.956    3.212   37.7   11.1   102   14.2 
2026-06-17 00:00 UT   08 19 41.7   +20 06 42     3.963    3.211   37.0   11.0   102   14.2 
2026-06-18 00:00 UT   08 21 01.1   +20 01 13     3.970    3.210   36.4   10.8   103   14.2 
2026-06-19 00:00 UT   08 22 20.7   +19 55 41     3.977    3.209   35.8   10.7   103   14.2 
2026-06-20 00:00 UT   08 23 40.5   +19 50 06     3.985    3.207   35.2   10.5   103   14.2 
2026-06-21 00:00 UT   08 25 00.5   +19 44 28     3.991    3.206   34.5   10.3   103   14.2 
2026-06-22 00:00 UT   08 26 20.6   +19 38 47     3.998    3.205   33.9   10.2   103   14.2 
2026-06-23 00:00 UT   08 27 41.0   +19 33 04     4.005    3.204   33.3   10.0   103   14.2 
2026-06-24 00:00 UT   08 29 01.5   +19 27 17     4.011    3.203   32.6    9.9   103   14.2 
2026-06-25 00:00 UT   08 30 22.2   +19 21 28     4.018    3.202   32.0    9.7   103   14.2 
2026-06-26 00:00 UT   08 31 43.1   +19 15 36     4.024    3.201   31.4    9.5   104   14.2 
2026-06-27 00:00 UT   08 33 04.1   +19 09 41     4.030    3.199   30.8    9.4   104   14.2 
2026-06-28 00:00 UT   08 34 25.3   +19 03 43     4.036    3.198   30.2    9.2   104   14.2 
2026-06-29 00:00 UT   08 35 46.6   +18 57 42     4.042    3.197   29.5    9.0   104   14.2 

    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.