(109) Felicitas
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	19 Oct 2025	14.3	2.499 AU	3.217 AU	11h21m	+07°19'	37.3°	14.0°
Opposition	27 Mar 2026	12.9	2.984 AU	1.986 AU	12h24m	-03°33'	179.0°	0.3°

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 Felicitas are:

            e (Eccentricity)                : 0.3005179
            a (Semimajor axis)              : 2.6929228
            i (Inclination)                 : 7.84615
            Ω (Longitude of ascending node) : 2.71574
            ω (Argument of perihelion)      : 57.58398
            M (Mean anomaly)                : 66.77732
            Epoch                           : 2025 Nov 21

            L (Longitude of perihelion)     : 60.05536
            B (Latitude of perihelion)      : 6.61757
            P (Orbital period in years)     : 4.42            
        

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.

Ephemerides:

Date       Time       RA (2000)    DEC (2000)    delta   radius  elong  phase   PA    magn
2025-10-19 00:00 UT   11 21 27.2   +07 19 16     3.217    2.499   37.3   14.0   297   14.3 
2025-10-19 13:45 UT   11 22 18.8   +07 13 15     3.214    2.501   37.7   14.1   297   14.3 
2025-10-20 00:00 UT   11 22 57.3   +07 08 46     3.212    2.502   37.9   14.2   297   14.3 
2025-10-21 00:00 UT   11 24 27.0   +06 58 17     3.207    2.506   38.5   14.3   297   14.3 
2025-10-22 00:00 UT   11 25 56.2   +06 47 50     3.202    2.509   39.1   14.5   297   14.3 
2025-10-23 00:00 UT   11 27 24.9   +06 37 25     3.196    2.512   39.7   14.6   297   14.3 
2025-10-24 00:00 UT   11 28 53.2   +06 27 03     3.191    2.515   40.3   14.8   297   14.3 
2025-10-25 00:00 UT   11 30 21.0   +06 16 43     3.186    2.519   40.8   15.0   297   14.3 
2025-10-26 00:00 UT   11 31 48.4   +06 06 25     3.180    2.522   41.4   15.1   296   14.3 
2025-10-27 00:00 UT   11 33 15.3   +05 56 09     3.174    2.525   42.0   15.3   296   14.3 
2025-10-28 00:00 UT   11 34 41.6   +05 45 56     3.168    2.529   42.6   15.4   296   14.3 
2025-10-29 00:00 UT   11 36 07.6   +05 35 45     3.162    2.532   43.2   15.6   296   14.4 
2025-10-30 00:00 UT   11 37 33.0   +05 25 37     3.156    2.535   43.8   15.7   296   14.4 
2025-10-31 00:00 UT   11 38 57.9   +05 15 32     3.150    2.538   44.4   15.9   296   14.4 
2025-11-01 00:00 UT   11 40 22.4   +05 05 28     3.144    2.542   45.1   16.0   296   14.4 
2025-11-02 00:00 UT   11 41 46.4   +04 55 28     3.137    2.545   45.7   16.2   296   14.4 
2025-11-03 00:00 UT   11 43 09.8   +04 45 30     3.131    2.548   46.3   16.3   296   14.4 
2025-11-04 00:00 UT   11 44 32.8   +04 35 36     3.124    2.552   46.9   16.5   296   14.4 
2025-11-05 00:00 UT   11 45 55.2   +04 25 43     3.118    2.555   47.5   16.6   296   14.4 
2025-11-06 00:00 UT   11 47 17.2   +04 15 54     3.111    2.558   48.1   16.8   296   14.4 
2025-11-07 00:00 UT   11 48 38.6   +04 06 08     3.104    2.561   48.8   16.9   296   14.4 
2025-11-08 00:00 UT   11 49 59.6   +03 56 24     3.097    2.565   49.4   17.1   296   14.4 
2025-11-09 00:00 UT   11 51 20.0   +03 46 44     3.090    2.568   50.0   17.2   296   14.4 

    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.