(90482) Orcus
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	30 May 2023	19.2	48.039 AU	47.948 AU	10h26m	-11°46'	94.6°	1.2°
Opposition	5 Mar 2024	19.0	48.028 AU	47.098 AU	10h32m	-12°55'	159.5°	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)                : 0.2286226
            a (Semimajor axis)              : 39.1166841
            i (Inclination)                 : 20.56758
            Ω (Longitude of ascending node) : 268.53588
            ω (Argument of perihelion)      : 73.46065
            M (Mean anomaly)                : 184.36713
            Epoch                           : 2023 Feb 25

            L (Longitude of perihelion)     : 340.93799
            B (Latitude of perihelion)      : 19.68058
            P (Orbital period in years)     : 244.65            
        

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
2023-05-30 00:00 UT   10 26 09.9   -11 46 39    47.948   48.039   94.6    1.2   111   19.2 
2023-05-30 05:18 UT   10 26 10.1   -11 46 35    47.952   48.039   94.4    1.2   111   19.2 
2023-05-31 00:00 UT   10 26 10.7   -11 46 18    47.964   48.039   93.7    1.2   112   19.2 
2023-06-01 00:00 UT   10 26 11.6   -11 45 58    47.980   48.039   92.8    1.2   112   19.2 
2023-06-02 00:00 UT   10 26 12.6   -11 45 38    47.996   48.039   91.9    1.2   112   19.2 
2023-06-03 00:00 UT   10 26 13.7   -11 45 18    48.011   48.039   91.0    1.2   112   19.2 
2023-06-04 00:00 UT   10 26 14.8   -11 44 59    48.027   48.039   90.1    1.2   113   19.2 
2023-06-05 00:00 UT   10 26 16.0   -11 44 41    48.043   48.039   89.2    1.2   113   19.2 
2023-06-06 00:00 UT   10 26 17.3   -11 44 23    48.059   48.039   88.3    1.2   113   19.2 
2023-06-07 00:00 UT   10 26 18.7   -11 44 05    48.075   48.039   87.4    1.2   114   19.2 
2023-06-08 00:00 UT   10 26 20.1   -11 43 48    48.091   48.039   86.5    1.2   114   19.2 
2023-06-09 00:00 UT   10 26 21.6   -11 43 32    48.106   48.039   85.6    1.2   114   19.2 
2023-06-10 00:00 UT   10 26 23.2   -11 43 16    48.122   48.039   84.7    1.2   115   19.2 
2023-06-11 00:00 UT   10 26 24.9   -11 43 00    48.138   48.039   83.8    1.2   115   19.2 
2023-06-12 00:00 UT   10 26 26.6   -11 42 45    48.154   48.039   82.9    1.2   115   19.2 
2023-06-13 00:00 UT   10 26 28.4   -11 42 31    48.169   48.039   82.0    1.2   116   19.2 
2023-06-14 00:00 UT   10 26 30.3   -11 42 17    48.185   48.039   81.1    1.2   116   19.2 
2023-06-15 00:00 UT   10 26 32.3   -11 42 04    48.201   48.039   80.2    1.2   116   19.2 
2023-06-16 00:00 UT   10 26 34.3   -11 41 51    48.216   48.039   79.3    1.2   117   19.2 
2023-06-17 00:00 UT   10 26 36.4   -11 41 39    48.232   48.039   78.4    1.2   117   19.2 
2023-06-18 00:00 UT   10 26 38.6   -11 41 27    48.247   48.039   77.6    1.2   117   19.2 
2023-06-19 00:00 UT   10 26 40.8   -11 41 16    48.263   48.039   76.7    1.2   118   19.2 
2023-06-20 00:00 UT   10 26 43.2   -11 41 05    48.278   48.039   75.8    1.2   118   19.2 
2023-06-21 00:00 UT   10 26 45.6   -11 40 55    48.293   48.039   74.9    1.2   118   19.2 
2023-06-22 00:00 UT   10 26 48.0   -11 40 46    48.309   48.039   74.0    1.2   119   19.2 
2023-06-23 00:00 UT   10 26 50.5   -11 40 37    48.324   48.038   73.1    1.2   119   19.2 
2023-06-24 00:00 UT   10 26 53.1   -11 40 29    48.339   48.038   72.2    1.2   119   19.2 
2023-06-25 00:00 UT   10 26 55.8   -11 40 21    48.354   48.038   71.4    1.1   120   19.2 
2023-06-26 00:00 UT   10 26 58.5   -11 40 14    48.369   48.038   70.5    1.1   120   19.2 
2023-06-27 00:00 UT   10 27 01.3   -11 40 07    48.383   48.038   69.6    1.1   121   19.2 
2023-06-28 00:00 UT   10 27 04.2   -11 40 02    48.398   48.038   68.7    1.1   121   19.2 
2023-06-29 00:00 UT   10 27 07.1   -11 39 56    48.413   48.038   67.8    1.1   121   19.2 

    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.