(198) Ampella
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	18 Sep 2025	14.0	2.640 AU	3.237 AU	14h28m	-18°51'	46.0°	15.9°
Opposition	12 Sep 2026	10.4	1.903 AU	0.924 AU	22h51m	+13°40'	160.7°	10.1°

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 Ampella are:

            e (Eccentricity)                : 0.2273292
            a (Semimajor axis)              : 2.4587905
            i (Inclination)                 : 9.32322
            Ω (Longitude of ascending node) : 268.20220
            ω (Argument of perihelion)      : 89.06233
            M (Mean anomaly)                : 228.68729
            Epoch                           : 2025 May 05

            L (Longitude of perihelion)     : 357.25198
            B (Latitude of perihelion)      : 9.32196
            P (Orbital period in years)     : 3.86            
        

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
2025-09-18 00:00 UT   14 28 21.1   -18 51 45     3.237    2.640   46.0   15.9   112   14.0 
2025-09-18 08:44 UT   14 28 54.8   -18 53 34     3.240    2.639   45.8   15.8   112   14.0 
2025-09-19 00:00 UT   14 29 53.8   -18 56 46     3.244    2.637   45.4   15.7   112   14.0 
2025-09-20 00:00 UT   14 31 27.0   -19 01 48     3.252    2.635   44.8   15.6   112   14.0 
2025-09-21 00:00 UT   14 33 00.7   -19 06 51     3.259    2.633   44.2   15.4   112   14.0 
2025-09-22 00:00 UT   14 34 34.9   -19 11 54     3.265    2.631   43.6   15.2   112   14.0 
2025-09-23 00:00 UT   14 36 09.6   -19 16 57     3.272    2.629   43.0   15.1   112   14.0 
2025-09-24 00:00 UT   14 37 44.8   -19 22 00     3.279    2.626   42.4   14.9   112   14.0 
2025-09-25 00:00 UT   14 39 20.5   -19 27 04     3.285    2.624   41.8   14.8   112   14.0 
2025-09-26 00:00 UT   14 40 56.7   -19 32 08     3.292    2.622   41.2   14.6   112   14.0 
2025-09-27 00:00 UT   14 42 33.3   -19 37 11     3.298    2.620   40.6   14.4   112   14.0 
2025-09-28 00:00 UT   14 44 10.4   -19 42 14     3.304    2.617   40.0   14.2   112   14.0 
2025-09-29 00:00 UT   14 45 48.0   -19 47 17     3.311    2.615   39.4   14.1   112   14.0 
2025-09-30 00:00 UT   14 47 26.1   -19 52 20     3.317    2.613   38.8   13.9   112   14.0 
2025-10-01 00:00 UT   14 49 04.6   -19 57 22     3.322    2.611   38.2   13.7   112   14.0 
2025-10-02 00:00 UT   14 50 43.6   -20 02 24     3.328    2.608   37.7   13.6   112   14.0 
2025-10-03 00:00 UT   14 52 23.0   -20 07 25     3.334    2.606   37.1   13.4   112   14.0 
2025-10-04 00:00 UT   14 54 02.9   -20 12 25     3.339    2.604   36.5   13.2   111   14.0 
2025-10-05 00:00 UT   14 55 43.2   -20 17 24     3.345    2.602   35.9   13.0   111   14.0 
2025-10-06 00:00 UT   14 57 24.0   -20 22 23     3.350    2.599   35.3   12.8   111   13.9 
2025-10-07 00:00 UT   14 59 05.2   -20 27 20     3.355    2.597   34.7   12.7   111   13.9 
2025-10-08 00:00 UT   15 00 46.9   -20 32 17     3.360    2.595   34.1   12.5   111   13.9 
2025-10-09 00:00 UT   15 02 29.0   -20 37 12     3.365    2.592   33.6   12.3   111   13.9 

    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.