(109) Felicitas
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	18 Dec 2025	14.3	2.693 AU	2.736 AU	12h35m	-01°40'	77.1°	20.9°
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) : 2.71575
            ω (Argument of perihelion)      : 57.58398
            M (Mean anomaly)                : 66.77732
            Epoch                           : 2025 Nov 21

            L (Longitude of perihelion)     : 60.05537
            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
2025-12-18 00:00 UT   12 35 31.5   -01 40 20     2.736    2.693   77.1   20.9   294   14.3 
2025-12-18 17:26 UT   12 36 10.1   -01 45 18     2.728    2.695   77.7   20.9   294   14.3 
2025-12-19 00:00 UT   12 36 24.5   -01 47 10     2.725    2.696   77.9   20.9   294   14.3 
2025-12-20 00:00 UT   12 37 16.7   -01 53 54     2.714    2.699   78.7   20.9   294   14.3 
2025-12-21 00:00 UT   12 38 07.9   -02 00 32     2.704    2.703   79.5   21.0   293   14.3 
2025-12-22 00:00 UT   12 38 58.3   -02 07 05     2.693    2.706   80.2   21.0   293   14.3 
2025-12-23 00:00 UT   12 39 47.6   -02 13 31     2.682    2.709   81.0   21.0   293   14.3 
2025-12-24 00:00 UT   12 40 36.1   -02 19 53     2.671    2.712   81.8   21.0   293   14.3 
2025-12-25 00:00 UT   12 41 23.5   -02 26 08     2.660    2.715   82.6   21.1   293   14.3 
2025-12-26 00:00 UT   12 42 10.0   -02 32 17     2.649    2.718   83.4   21.1   293   14.3 
2025-12-27 00:00 UT   12 42 55.4   -02 38 20     2.638    2.721   84.2   21.1   293   14.3 
2025-12-28 00:00 UT   12 43 39.9   -02 44 17     2.627    2.724   85.0   21.1   293   14.3 
2025-12-29 00:00 UT   12 44 23.3   -02 50 09     2.616    2.728   85.8   21.1   293   14.3 
2025-12-30 00:00 UT   12 45 05.7   -02 55 53     2.605    2.731   86.7   21.1   293   14.3 
2025-12-31 00:00 UT   12 45 47.0   -03 01 32     2.594    2.734   87.5   21.1   293   14.3 
2026-01-01 00:00 UT   12 46 27.2   -03 07 05     2.583    2.737   88.3   21.0   293   14.3 
2026-01-02 00:00 UT   12 47 06.4   -03 12 31     2.572    2.740   89.1   21.0   293   14.3 
2026-01-03 00:00 UT   12 47 44.5   -03 17 51     2.561    2.743   90.0   21.0   293   14.2 
2026-01-04 00:00 UT   12 48 21.5   -03 23 04     2.550    2.746   90.8   21.0   293   14.2 
2026-01-05 00:00 UT   12 48 57.4   -03 28 11     2.539    2.749   91.7   20.9   293   14.2 
2026-01-06 00:00 UT   12 49 32.2   -03 33 12     2.528    2.752   92.5   20.9   293   14.2 
2026-01-07 00:00 UT   12 50 05.7   -03 38 05     2.517    2.755   93.4   20.9   293   14.2 
2026-01-08 00:00 UT   12 50 38.2   -03 42 52     2.505    2.758   94.2   20.8   293   14.2 
2026-01-09 00:00 UT   12 51 09.4   -03 47 32     2.494    2.762   95.1   20.8   293   14.2 
2026-01-10 00:00 UT   12 51 39.4   -03 52 06     2.483    2.765   96.0   20.7   293   14.2 
2026-01-11 00:00 UT   12 52 08.2   -03 56 32     2.472    2.768   96.9   20.7   293   14.2 
2026-01-12 00:00 UT   12 52 35.8   -04 00 52     2.461    2.771   97.8   20.6   293   14.2 
2026-01-13 00:00 UT   12 53 02.1   -04 05 04     2.450    2.774   98.6   20.5   293   14.2 
2026-01-14 00:00 UT   12 53 27.2   -04 09 09     2.439    2.777   99.5   20.4   293   14.1 
2026-01-15 00:00 UT   12 53 51.0   -04 13 07     2.428    2.780  100.4   20.4   292   14.1 
2026-01-16 00:00 UT   12 54 13.4   -04 16 57     2.417    2.783  101.4   20.3   292   14.1 
2026-01-17 00:00 UT   12 54 34.6   -04 20 40     2.406    2.786  102.3   20.2   292   14.1 

    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.