(20) Massalia
ephemeris date magn radius delta ra dec elong phase
Today23 Jun 202411.62.548 AU2.409 AU00h20m+02°44'86.0°23.4°
Opposition29 Sep 20249.22.399 AU1.398 AU00h24m+03°02'179.5°0.2°
(20) Massalia - 2024-06-23
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 Massalia are:

            e (Eccentricity)                : 0.1436369
            a (Semimajor axis)              : 2.4078351
            i (Inclination)                 : 0.70928
            Ω (Longitude of ascending node) : 205.98120
            ω (Argument of perihelion)      : 257.47835
            M (Mean anomaly)                : 231.51719
            Epoch                           : 2024 Mar 31

            L (Longitude of perihelion)     : 283.45862
            B (Latitude of perihelion)      : -0.69241
            P (Orbital period in years)     : 3.74            
        

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
2024-06-23 00:00 UT   00 20 10.1   +02 44 43     2.409    2.548   86.0   23.4   247   11.6 
2024-06-23 02:06 UT   00 20 15.3   +02 45 17     2.407    2.548   86.0   23.5   247   11.6 
2024-06-24 00:00 UT   00 21 09.0   +02 51 06     2.395    2.546   86.7   23.5   247   11.6 
2024-06-25 00:00 UT   00 22 07.2   +02 57 24     2.381    2.545   87.4   23.5   247   11.6 
2024-06-26 00:00 UT   00 23 04.7   +03 03 38     2.366    2.544   88.0   23.5   247   11.5 
2024-06-27 00:00 UT   00 24 01.5   +03 09 46     2.352    2.542   88.7   23.6   247   11.5 
2024-06-28 00:00 UT   00 24 57.5   +03 15 49     2.338    2.541   89.4   23.6   247   11.5 
2024-06-29 00:00 UT   00 25 52.7   +03 21 47     2.324    2.539   90.1   23.6   247   11.5 
2024-06-30 00:00 UT   00 26 47.1   +03 27 40     2.310    2.538   90.9   23.6   247   11.5 
2024-07-01 00:00 UT   00 27 40.8   +03 33 27     2.296    2.537   91.6   23.6   247   11.5 
2024-07-02 00:00 UT   00 28 33.6   +03 39 09     2.282    2.535   92.3   23.6   247   11.5 
2024-07-03 00:00 UT   00 29 25.6   +03 44 45     2.268    2.534   93.0   23.6   247   11.4 
2024-07-04 00:00 UT   00 30 16.7   +03 50 16     2.254    2.532   93.7   23.6   247   11.4 
2024-07-05 00:00 UT   00 31 07.0   +03 55 40     2.240    2.531   94.4   23.6   247   11.4 
2024-07-06 00:00 UT   00 31 56.4   +04 00 59     2.226    2.530   95.2   23.6   247   11.4 
2024-07-07 00:00 UT   00 32 44.9   +04 06 12     2.212    2.528   95.9   23.6   247   11.4 
2024-07-08 00:00 UT   00 33 32.4   +04 11 18     2.198    2.527   96.6   23.6   247   11.4 
2024-07-09 00:00 UT   00 34 19.1   +04 16 19     2.184    2.525   97.4   23.5   247   11.4 
2024-07-10 00:00 UT   00 35 04.7   +04 21 12     2.171    2.524   98.1   23.5   247   11.3 
2024-07-11 00:00 UT   00 35 49.5   +04 26 00     2.157    2.522   98.9   23.5   247   11.3 
2024-07-12 00:00 UT   00 36 33.2   +04 30 41     2.143    2.521   99.6   23.4   247   11.3 
2024-07-13 00:00 UT   00 37 15.9   +04 35 15     2.129    2.520  100.4   23.4   247   11.3 
2024-07-14 00:00 UT   00 37 57.7   +04 39 43     2.115    2.518  101.2   23.3   247   11.3 
2024-07-15 00:00 UT   00 38 38.4   +04 44 04     2.102    2.517  101.9   23.3   247   11.3 
2024-07-16 00:00 UT   00 39 18.1   +04 48 18     2.088    2.515  102.7   23.2   247   11.2 
2024-07-17 00:00 UT   00 39 56.7   +04 52 25     2.074    2.514  103.5   23.2   247   11.2 
2024-07-18 00:00 UT   00 40 34.2   +04 56 26     2.061    2.512  104.3   23.1   247   11.2 
2024-07-19 00:00 UT   00 41 10.6   +05 00 18     2.047    2.511  105.1   23.0   247   11.2 
2024-07-20 00:00 UT   00 41 46.0   +05 04 04     2.033    2.509  105.9   22.9   247   11.2 
2024-07-21 00:00 UT   00 42 20.2   +05 07 42     2.020    2.508  106.7   22.8   247   11.2 
2024-07-22 00:00 UT   00 42 53.2   +05 11 13     2.007    2.506  107.5   22.7   247   11.1 
2024-07-23 00:00 UT   00 43 25.1   +05 14 36     1.993    2.505  108.3   22.6   247   11.1 


    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.