(63) Ausonia
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Opposition	2 Aug 2025	9.3	2.136 AU	1.124 AU	20h57m	-22°28'	174.9°	2.4°
Today	8 Aug 2025	9.4	2.141 AU	1.132 AU	20h51m	-22°30'	172.2°	3.7°

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)                : 0.1282281
            a (Semimajor axis)              : 2.3949157
            i (Inclination)                 : 5.77292
            Ω (Longitude of ascending node) : 337.68532
            ω (Argument of perihelion)      : 295.67012
            M (Mean anomaly)                : 4.87062
            Epoch                           : 2025 May 05

            L (Longitude of perihelion)     : 273.46936
            B (Latitude of perihelion)      : -5.20149
            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
2025-08-08 00:00 UT   20 51 58.4   -22 30 34     1.132    2.141  172.2    3.7    37    9.4 
2025-08-08 08:47 UT   20 51 35.8   -22 30 34     1.133    2.141  171.9    3.8    39    9.4 
2025-08-09 00:00 UT   20 50 56.8   -22 30 33     1.134    2.142  171.3    4.1    42    9.4 
2025-08-10 00:00 UT   20 49 55.8   -22 30 26     1.137    2.143  170.3    4.6    46    9.5 
2025-08-11 00:00 UT   20 48 55.6   -22 30 12     1.140    2.144  169.3    5.0    50    9.5 
2025-08-12 00:00 UT   20 47 56.1   -22 29 51     1.143    2.145  168.2    5.5    52    9.5 
2025-08-13 00:00 UT   20 46 57.5   -22 29 24     1.146    2.146  167.2    6.0    55    9.6 
2025-08-14 00:00 UT   20 45 59.8   -22 28 49     1.150    2.147  166.1    6.5    57    9.6 
2025-08-15 00:00 UT   20 45 03.1   -22 28 07     1.153    2.148  165.0    7.0    59    9.6 
2025-08-16 00:00 UT   20 44 07.6   -22 27 18     1.157    2.149  163.9    7.5    60    9.6 
2025-08-17 00:00 UT   20 43 13.2   -22 26 23     1.161    2.149  162.8    8.0    61    9.7 
2025-08-18 00:00 UT   20 42 20.0   -22 25 20     1.166    2.150  161.7    8.5    63    9.7 
2025-08-19 00:00 UT   20 41 28.2   -22 24 10     1.170    2.151  160.6    9.0    64    9.7 
2025-08-20 00:00 UT   20 40 37.8   -22 22 53     1.175    2.152  159.5    9.5    65    9.8 
2025-08-21 00:00 UT   20 39 48.9   -22 21 28     1.180    2.153  158.3   10.0    65    9.8 
2025-08-22 00:00 UT   20 39 01.4   -22 19 57     1.186    2.154  157.2   10.5    66    9.8 
2025-08-23 00:00 UT   20 38 15.6   -22 18 19     1.191    2.155  156.1   10.9    67    9.9 
2025-08-24 00:00 UT   20 37 31.5   -22 16 34     1.197    2.156  155.0   11.4    68    9.9 
2025-08-25 00:00 UT   20 36 49.0   -22 14 42     1.203    2.157  153.9   11.9    68    9.9 
2025-08-26 00:00 UT   20 36 08.3   -22 12 43     1.209    2.158  152.9   12.3    69   10.0 
2025-08-27 00:00 UT   20 35 29.4   -22 10 37     1.216    2.159  151.8   12.8    69   10.0 
2025-08-28 00:00 UT   20 34 52.4   -22 08 24     1.222    2.160  150.7   13.2    70   10.0 
2025-08-29 00:00 UT   20 34 17.2   -22 06 05     1.229    2.161  149.6   13.7    70   10.0 
2025-08-30 00:00 UT   20 33 44.0   -22 03 40     1.236    2.162  148.6   14.1    70   10.1 
2025-08-31 00:00 UT   20 33 12.7   -22 01 08     1.243    2.163  147.5   14.5    71   10.1 
2025-09-01 00:00 UT   20 32 43.3   -21 58 30     1.250    2.164  146.4   14.9    71   10.1 
2025-09-02 00:00 UT   20 32 16.0   -21 55 46     1.258    2.166  145.4   15.3    71   10.2 
2025-09-03 00:00 UT   20 31 50.6   -21 52 55     1.266    2.167  144.3   15.7    72   10.2 
2025-09-04 00:00 UT   20 31 27.3   -21 49 59     1.273    2.168  143.3   16.1    72   10.2 
2025-09-05 00:00 UT   20 31 06.0   -21 46 57     1.282    2.169  142.3   16.5    72   10.2 
2025-09-06 00:00 UT   20 30 46.7   -21 43 49     1.290    2.170  141.3   16.9    73   10.3 
2025-09-07 00:00 UT   20 30 29.5   -21 40 36     1.298    2.171  140.2   17.3    73   10.3 

    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.