(63) Ausonia
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	10 Oct 2025	11.1	2.209 AU	1.650 AU	20h39m	-19°11'	110.6°	25.0°
Opposition	9 Dec 2026	10.8	2.687 AU	1.710 AU	05h05m	+31°50'	171.0°	3.3°

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 Ausonia are:

            e (Eccentricity)                : 0.1281571
            a (Semimajor axis)              : 2.3945792
            i (Inclination)                 : 5.77335
            Ω (Longitude of ascending node) : 337.68318
            ω (Argument of perihelion)      : 295.62150
            M (Mean anomaly)                : 58.10810
            Epoch                           : 2025 Nov 21

            L (Longitude of perihelion)     : 273.41847
            B (Latitude of perihelion)      : -5.20401
            P (Orbital period in years)     : 3.71            
        

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
2025-10-10 00:00 UT   20 39 06.4   -19 11 28     1.650    2.209  110.6   25.0    75   11.1 
2025-10-10 03:13 UT   20 39 12.3   -19 10 43     1.652    2.209  110.5   25.1    75   11.1 
2025-10-11 00:00 UT   20 39 51.1   -19 05 49     1.663    2.210  109.8   25.2    75   11.1 
2025-10-12 00:00 UT   20 40 37.2   -19 00 05     1.675    2.211  109.0   25.3    75   11.1 
2025-10-13 00:00 UT   20 41 24.6   -18 54 18     1.687    2.213  108.2   25.4    75   11.2 
2025-10-14 00:00 UT   20 42 13.5   -18 48 28     1.700    2.214  107.4   25.5    75   11.2 
2025-10-15 00:00 UT   20 43 03.6   -18 42 33     1.713    2.215  106.7   25.5    75   11.2 
2025-10-16 00:00 UT   20 43 55.1   -18 36 35     1.725    2.216  105.9   25.6    75   11.2 
2025-10-17 00:00 UT   20 44 47.9   -18 30 33     1.738    2.218  105.1   25.7    75   11.2 
2025-10-18 00:00 UT   20 45 41.9   -18 24 27     1.751    2.219  104.4   25.8    75   11.3 
2025-10-19 00:00 UT   20 46 37.1   -18 18 17     1.763    2.220  103.6   25.9    75   11.3 
2025-10-20 00:00 UT   20 47 33.6   -18 12 03     1.776    2.221  102.9   25.9    75   11.3 
2025-10-21 00:00 UT   20 48 31.3   -18 05 46     1.789    2.223  102.1   26.0    74   11.3 
2025-10-22 00:00 UT   20 49 30.2   -17 59 25     1.802    2.224  101.4   26.0    74   11.3 
2025-10-23 00:00 UT   20 50 30.1   -17 52 59     1.815    2.225  100.6   26.1    74   11.3 
2025-10-24 00:00 UT   20 51 31.3   -17 46 30     1.828    2.227   99.9   26.1    74   11.4 
2025-10-25 00:00 UT   20 52 33.5   -17 39 57     1.841    2.228   99.2   26.1    74   11.4 
2025-10-26 00:00 UT   20 53 36.7   -17 33 21     1.854    2.229   98.5   26.2    74   11.4 
2025-10-27 00:00 UT   20 54 41.1   -17 26 40     1.867    2.230   97.7   26.2    74   11.4 
2025-10-28 00:00 UT   20 55 46.4   -17 19 55     1.881    2.232   97.0   26.2    74   11.4 
2025-10-29 00:00 UT   20 56 52.7   -17 13 07     1.894    2.233   96.3   26.2    74   11.5 
2025-10-30 00:00 UT   20 58 00.1   -17 06 14     1.907    2.234   95.6   26.3    74   11.5 
2025-10-31 00:00 UT   20 59 08.3   -16 59 18     1.920    2.236   94.9   26.3    74   11.5 
2025-11-01 00:00 UT   21 00 17.5   -16 52 18     1.933    2.237   94.2   26.3    74   11.5 
2025-11-02 00:00 UT   21 01 27.6   -16 45 14     1.947    2.238   93.5   26.3    74   11.5 
2025-11-03 00:00 UT   21 02 38.6   -16 38 06     1.960    2.240   92.8   26.3    73   11.5 
2025-11-04 00:00 UT   21 03 50.4   -16 30 54     1.973    2.241   92.1   26.3    73   11.5 
2025-11-05 00:00 UT   21 05 03.1   -16 23 39     1.987    2.242   91.4   26.2    73   11.6 
2025-11-06 00:00 UT   21 06 16.5   -16 16 19     2.000    2.244   90.7   26.2    73   11.6 
2025-11-07 00:00 UT   21 07 30.8   -16 08 56     2.013    2.245   90.0   26.2    73   11.6 
2025-11-08 00:00 UT   21 08 45.8   -16 01 29     2.027    2.246   89.4   26.2    73   11.6 
2025-11-09 00:00 UT   21 10 01.7   -15 53 58     2.040    2.247   88.7   26.1    73   11.6 

    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.