(218) Bianca
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	4 Dec 2025	13.2	2.908 AU	2.029 AU	06h24m	+01°25'	147.3°	10.6°
Opposition	23 Dec 2025	13.0	2.894 AU	1.959 AU	06h08m	+01°06'	157.7°	7.4°

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 Bianca are:

            e (Eccentricity)                : 0.1153056
            a (Semimajor axis)              : 2.6689711
            i (Inclination)                 : 15.19383
            Ω (Longitude of ascending node) : 170.50832
            ω (Argument of perihelion)      : 62.32596
            M (Mean anomaly)                : 220.28385
            Epoch                           : 2025 Nov 21

            L (Longitude of perihelion)     : 231.98735
            B (Latitude of perihelion)      : 13.42096
            P (Orbital period in years)     : 4.36            
        

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
2025-12-04 00:00 UT   06 24 47.2   +01 25 55     2.029    2.908  147.3   10.6   311   13.2 
2025-12-04 19:54 UT   06 24 10.9   +01 23 42     2.024    2.907  148.0   10.4   313   13.2 
2025-12-05 00:00 UT   06 24 03.4   +01 23 16     2.023    2.907  148.1   10.3   313   13.2 
2025-12-06 00:00 UT   06 23 18.6   +01 20 46     2.018    2.907  148.9   10.1   315   13.2 
2025-12-07 00:00 UT   06 22 32.8   +01 18 26     2.012    2.906  149.7    9.8   316   13.2 
2025-12-08 00:00 UT   06 21 46.1   +01 16 17     2.007    2.905  150.5    9.6   318   13.1 
2025-12-09 00:00 UT   06 20 58.4   +01 14 17     2.002    2.904  151.3    9.4   320   13.1 
2025-12-10 00:00 UT   06 20 09.9   +01 12 28     1.997    2.904  152.0    9.2   322   13.1 
2025-12-11 00:00 UT   06 19 20.6   +01 10 50     1.993    2.903  152.7    9.0   324   13.1 
2025-12-12 00:00 UT   06 18 30.5   +01 09 23     1.988    2.902  153.3    8.8   326   13.1 
2025-12-13 00:00 UT   06 17 39.7   +01 08 06     1.984    2.901  154.0    8.6   329   13.1 
2025-12-14 00:00 UT   06 16 48.2   +01 07 01     1.981    2.901  154.6    8.4   331   13.1 
2025-12-15 00:00 UT   06 15 56.1   +01 06 06     1.977    2.900  155.1    8.2   334   13.0 
2025-12-16 00:00 UT   06 15 03.4   +01 05 24     1.974    2.899  155.6    8.1   336   13.0 
2025-12-17 00:00 UT   06 14 10.3   +01 04 52     1.971    2.899  156.1    7.9   339   13.0 
2025-12-18 00:00 UT   06 13 16.6   +01 04 33     1.969    2.898  156.5    7.8   342   13.0 
2025-12-19 00:00 UT   06 12 22.6   +01 04 24     1.966    2.897  156.8    7.7   345   13.0 
2025-12-20 00:00 UT   06 11 28.3   +01 04 28     1.964    2.896  157.1    7.6   348   13.0 
2025-12-21 00:00 UT   06 10 33.6   +01 04 43     1.963    2.896  157.4    7.5   351   13.0 
2025-12-22 00:00 UT   06 09 38.8   +01 05 10     1.961    2.895  157.5    7.5   354   13.0 
2025-12-23 00:00 UT   06 08 43.8   +01 05 49     1.960    2.894  157.6    7.4   357   13.0 
2025-12-24 00:00 UT   06 07 48.7   +01 06 40     1.959    2.893  157.7    7.4     1   13.0 
2025-12-25 00:00 UT   06 06 53.6   +01 07 43     1.958    2.892  157.7    7.4     4   13.0 
2025-12-26 00:00 UT   06 05 58.6   +01 08 57     1.958    2.892  157.6    7.5     7   13.0 
2025-12-27 00:00 UT   06 05 03.6   +01 10 23     1.958    2.891  157.4    7.5    10   13.0 
2025-12-28 00:00 UT   06 04 08.8   +01 12 00     1.958    2.890  157.2    7.6    14   13.0 
2025-12-29 00:00 UT   06 03 14.2   +01 13 49     1.959    2.889  157.0    7.7    17   13.0 
2025-12-30 00:00 UT   06 02 19.8   +01 15 50     1.959    2.889  156.6    7.8    20   13.0 
2025-12-31 00:00 UT   06 01 25.9   +01 18 01     1.960    2.888  156.3    7.9    23   13.0 
2026-01-01 00:00 UT   06 00 32.2   +01 20 24     1.962    2.887  155.8    8.0    25   13.0 
2026-01-02 00:00 UT   05 59 39.1   +01 22 58     1.963    2.886  155.3    8.2    28   13.0 
2026-01-03 00:00 UT   05 58 46.4   +01 25 43     1.965    2.885  154.8    8.3    31   13.0 

    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.