(1) Ceres
ephemeris date magn radius delta ra dec elong phase
Today15 Jan 20259.22.979 AU3.881 AU21h14m-23°21'20.5°6.6°
Opposition2 Oct 20257.62.939 AU1.961 AU00h57m-10°13'164.9°5.1°
(1) Ceres - 2025-01-15
astro.vanbuitenen.nl


 
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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 Ceres are:

            e (Eccentricity)                : 0.0791840
            a (Semimajor axis)              : 2.7666197
            i (Inclination)                 : 10.58790
            Ω (Longitude of ascending node) : 80.25414
            ω (Argument of perihelion)      : 73.28579
            M (Mean anomaly)                : 145.84905
            Epoch                           : 2024 Oct 17

            L (Longitude of perihelion)     : 153.26697
            B (Latitude of perihelion)      : 10.13574
            P (Orbital period in years)     : 4.60            
        

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
2025-01-15 00:00 UT   21 14 47.7   -23 21 43     3.881    2.979   20.5    6.6    92    9.2 
2025-01-15 07:00 UT   21 15 15.6   -23 19 47     3.882    2.979   20.3    6.6    92    9.2 
2025-01-16 00:00 UT   21 16 23.5   -23 15 02     3.886    2.980   19.9    6.5    92    9.2 
2025-01-17 00:00 UT   21 17 59.4   -23 08 18     3.890    2.980   19.3    6.3    93    9.1 
2025-01-18 00:00 UT   21 19 35.3   -23 01 31     3.895    2.980   18.7    6.1    94    9.1 
2025-01-19 00:00 UT   21 21 11.1   -22 54 43     3.899    2.980   18.2    5.9    94    9.1 
2025-01-20 00:00 UT   21 22 46.9   -22 47 51     3.903    2.980   17.6    5.7    95    9.1 
2025-01-21 00:00 UT   21 24 22.7   -22 40 58     3.908    2.980   17.0    5.5    96    9.1 
2025-01-22 00:00 UT   21 25 58.5   -22 34 02     3.911    2.981   16.4    5.4    97    9.1 
2025-01-23 00:00 UT   21 27 34.3   -22 27 04     3.915    2.981   15.9    5.2    98    9.1 
2025-01-24 00:00 UT   21 29 10.0   -22 20 04     3.919    2.981   15.3    5.0    99    9.1 
2025-01-25 00:00 UT   21 30 45.7   -22 13 02     3.922    2.981   14.8    4.8   100    9.1 
2025-01-26 00:00 UT   21 32 21.3   -22 05 57     3.926    2.981   14.2    4.7   101    9.1 
2025-01-27 00:00 UT   21 33 56.9   -21 58 51     3.929    2.981   13.7    4.5   102    9.1 
2025-01-28 00:00 UT   21 35 32.4   -21 51 42     3.932    2.982   13.2    4.3   103    9.1 
2025-01-29 00:00 UT   21 37 07.9   -21 44 31     3.935    2.982   12.7    4.2   105    9.1 
2025-01-30 00:00 UT   21 38 43.3   -21 37 19     3.938    2.982   12.2    4.0   106    9.1 
2025-01-31 00:00 UT   21 40 18.7   -21 30 04     3.940    2.982   11.7    3.8   108    9.0 
2025-02-01 00:00 UT   21 41 54.0   -21 22 48     3.943    2.982   11.2    3.7   110    9.0 
2025-02-02 00:00 UT   21 43 29.2   -21 15 30     3.945    2.982   10.7    3.5   112    9.0 
2025-02-03 00:00 UT   21 45 04.3   -21 08 10     3.947    2.982   10.3    3.4   115    9.0 
2025-02-04 00:00 UT   21 46 39.4   -21 00 49     3.949    2.982    9.8    3.2   117    9.0 
2025-02-05 00:00 UT   21 48 14.4   -20 53 26     3.951    2.983    9.4    3.1   120    9.0 


    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.