(90482) Orcus
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	1 Jun 2025	19.1	48.008 AU	47.923 AU	10h33m	-12°39'	94.2°	1.2°
Opposition	7 Mar 2026	19.0	47.993 AU	47.062 AU	10h39m	-13°49'	159.4°	0.4°

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 Orcus are:

            e (Eccentricity)                : 0.2231446
            a (Semimajor axis)              : 39.2890646
            i (Inclination)                 : 20.55553
            Ω (Longitude of ascending node) : 268.38604
            ω (Argument of perihelion)      : 73.79654
            M (Mean anomaly)                : 187.21828
            Epoch                           : 2025 May 05

            L (Longitude of perihelion)     : 341.14422
            B (Latitude of perihelion)      : 19.70440
            P (Orbital period in years)     : 246.27            
        

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. A more printer-friendly version of the same chart can be found below.

Ephemerides:

Date       Time       RA (2000)    DEC (2000)    delta   radius  elong  phase   PA    magn
2025-06-01 00:00 UT   10 33 05.0   -12 39 37    47.923   48.008   94.2    1.2   112   19.1 
2025-06-01 00:16 UT   10 33 05.0   -12 39 37    47.923   48.008   94.2    1.2   112   19.1 
2025-06-02 00:00 UT   10 33 05.9   -12 39 16    47.939   48.008   93.3    1.2   112   19.1 
2025-06-03 00:00 UT   10 33 06.8   -12 38 55    47.955   48.008   92.4    1.2   112   19.1 
2025-06-04 00:00 UT   10 33 07.9   -12 38 35    47.970   48.008   91.5    1.2   113   19.1 
2025-06-05 00:00 UT   10 33 09.0   -12 38 16    47.986   48.008   90.6    1.2   113   19.1 
2025-06-06 00:00 UT   10 33 10.2   -12 37 57    48.002   48.008   89.7    1.2   113   19.1 
2025-06-07 00:00 UT   10 33 11.5   -12 37 39    48.018   48.008   88.8    1.2   114   19.1 
2025-06-08 00:00 UT   10 33 12.8   -12 37 21    48.034   48.008   87.9    1.2   114   19.1 
2025-06-09 00:00 UT   10 33 14.2   -12 37 03    48.049   48.008   87.0    1.2   114   19.1 
2025-06-10 00:00 UT   10 33 15.7   -12 36 46    48.065   48.008   86.2    1.2   115   19.1 
2025-06-11 00:00 UT   10 33 17.3   -12 36 30    48.081   48.008   85.3    1.2   115   19.1 
2025-06-12 00:00 UT   10 33 18.9   -12 36 14    48.097   48.008   84.4    1.2   115   19.1 
2025-06-13 00:00 UT   10 33 20.6   -12 35 59    48.112   48.008   83.5    1.2   116   19.1 
2025-06-14 00:00 UT   10 33 22.4   -12 35 44    48.128   48.008   82.6    1.2   116   19.1 
2025-06-15 00:00 UT   10 33 24.3   -12 35 29    48.144   48.008   81.7    1.2   116   19.1 
2025-06-16 00:00 UT   10 33 26.2   -12 35 16    48.159   48.008   80.8    1.2   117   19.1 
2025-06-17 00:00 UT   10 33 28.3   -12 35 02    48.175   48.007   79.9    1.2   117   19.1 
2025-06-18 00:00 UT   10 33 30.3   -12 34 50    48.190   48.007   79.0    1.2   117   19.1 
2025-06-19 00:00 UT   10 33 32.5   -12 34 38    48.206   48.007   78.1    1.2   118   19.1 
2025-06-20 00:00 UT   10 33 34.7   -12 34 26    48.221   48.007   77.3    1.2   118   19.1 
2025-06-21 00:00 UT   10 33 37.0   -12 34 15    48.237   48.007   76.4    1.2   118   19.1 
2025-06-22 00:00 UT   10 33 39.4   -12 34 05    48.252   48.007   75.5    1.2   119   19.1 
2025-06-23 00:00 UT   10 33 41.8   -12 33 55    48.267   48.007   74.6    1.2   119   19.1 
2025-06-24 00:00 UT   10 33 44.3   -12 33 46    48.282   48.007   73.7    1.2   119   19.1 
2025-06-25 00:00 UT   10 33 46.9   -12 33 37    48.297   48.007   72.8    1.2   120   19.1 
2025-06-26 00:00 UT   10 33 49.5   -12 33 29    48.312   48.007   71.9    1.2   120   19.1 
2025-06-27 00:00 UT   10 33 52.3   -12 33 21    48.327   48.007   71.1    1.1   120   19.1 
2025-06-28 00:00 UT   10 33 55.0   -12 33 14    48.342   48.007   70.2    1.1   121   19.1 
2025-06-29 00:00 UT   10 33 57.9   -12 33 08    48.357   48.007   69.3    1.1   121   19.1 
2025-06-30 00:00 UT   10 34 00.8   -12 33 02    48.371   48.007   68.4    1.1   121   19.1 
2025-07-01 00:00 UT   10 34 03.8   -12 32 57    48.386   48.007   67.5    1.1   122   19.1 

    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.