(218) Bianca
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	20 Dec 2025	13.0	2.896 AU	1.964 AU	06h11m	+01°04'	157.1°	7.6°
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
2025-12-20 00:00 UT   06 11 28.3   +01 04 28     1.964    2.896  157.1    7.6   348   13.0 
2025-12-20 13:20 UT   06 10 58.0   +01 04 35     1.963    2.896  157.3    7.5   350   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 
2026-01-04 00:00 UT   05 57 54.3   +01 28 39     1.967    2.885  154.2    8.5    33   13.0 
2026-01-05 00:00 UT   05 57 02.8   +01 31 46     1.970    2.884  153.6    8.7    36   13.0 
2026-01-06 00:00 UT   05 56 11.9   +01 35 03     1.972    2.883  153.0    8.9    38   13.1 
2026-01-07 00:00 UT   05 55 21.7   +01 38 30     1.975    2.882  152.3    9.1    40   13.1 
2026-01-08 00:00 UT   05 54 32.3   +01 42 07     1.978    2.881  151.6    9.4    42   13.1 
2026-01-09 00:00 UT   05 53 43.7   +01 45 55     1.982    2.881  150.8    9.6    44   13.1 
2026-01-10 00:00 UT   05 52 55.9   +01 49 52     1.986    2.880  150.0    9.8    46   13.1 
2026-01-11 00:00 UT   05 52 09.0   +01 53 59     1.989    2.879  149.3   10.1    48   13.1 
2026-01-12 00:00 UT   05 51 23.1   +01 58 15     1.994    2.878  148.4   10.3    49   13.1 
2026-01-13 00:00 UT   05 50 38.2   +02 02 40     1.998    2.877  147.6   10.6    51   13.1 
2026-01-14 00:00 UT   05 49 54.3   +02 07 15     2.003    2.876  146.8   10.8    52   13.2 
2026-01-15 00:00 UT   05 49 11.5   +02 11 58     2.008    2.876  145.9   11.1    54   13.2 
2026-01-16 00:00 UT   05 48 29.8   +02 16 50     2.013    2.875  145.0   11.3    55   13.2 
2026-01-17 00:00 UT   05 47 49.2   +02 21 50     2.018    2.874  144.1   11.6    57   13.2 
2026-01-18 00:00 UT   05 47 09.9   +02 26 58     2.024    2.873  143.2   11.8    58   13.2 
2026-01-19 00:00 UT   05 46 31.7   +02 32 13     2.030    2.872  142.3   12.1    59   13.2 

    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.