(250) Bettina
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	8 Dec 2025	12.9	2.963 AU	2.433 AU	00h31m	+04°19'	113.2°	17.8°
Opposition	18 Jan 2027	11.6	2.727 AU	1.781 AU	08h20m	+39°55'	160.2°	7.0°

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 Bettina are:

            e (Eccentricity)                : 0.1369714
            a (Semimajor axis)              : 3.1413264
            i (Inclination)                 : 12.82181
            Ω (Longitude of ascending node) : 23.78705
            ω (Argument of perihelion)      : 75.98060
            M (Mean anomaly)                : 298.60722
            Epoch                           : 2025 Nov 21

            L (Longitude of perihelion)     : 99.42380
            B (Latitude of perihelion)      : 12.43369
            P (Orbital period in years)     : 5.57            
        

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
2025-12-08 00:00 UT   00 31 44.0   +04 19 47     2.433    2.963  113.2   17.8    67   12.9 
2025-12-08 20:21 UT   00 31 50.7   +04 23 11     2.443    2.962  112.4   17.9    67   12.9 
2025-12-09 00:00 UT   00 31 52.0   +04 23 48     2.445    2.962  112.3   17.9    67   12.9 
2025-12-10 00:00 UT   00 32 01.4   +04 27 56     2.457    2.961  111.3   18.1    67   12.9 
2025-12-11 00:00 UT   00 32 12.0   +04 32 10     2.469    2.959  110.4   18.2    67   12.9 
2025-12-12 00:00 UT   00 32 24.0   +04 36 31     2.481    2.958  109.4   18.3    67   13.0 
2025-12-13 00:00 UT   00 32 37.2   +04 40 58     2.493    2.957  108.5   18.4    67   13.0 
2025-12-14 00:00 UT   00 32 51.8   +04 45 31     2.506    2.955  107.5   18.5    67   13.0 
2025-12-15 00:00 UT   00 33 07.6   +04 50 11     2.518    2.954  106.6   18.6    67   13.0 
2025-12-16 00:00 UT   00 33 24.7   +04 54 57     2.530    2.953  105.7   18.7    67   13.0 
2025-12-17 00:00 UT   00 33 43.1   +04 59 48     2.543    2.952  104.8   18.8    67   13.0 
2025-12-18 00:00 UT   00 34 02.7   +05 04 46     2.556    2.950  103.9   18.9    67   13.0 
2025-12-19 00:00 UT   00 34 23.5   +05 09 50     2.568    2.949  103.0   19.0    67   13.0 
2025-12-20 00:00 UT   00 34 45.5   +05 14 60     2.581    2.948  102.1   19.1    67   13.1 
2025-12-21 00:00 UT   00 35 08.8   +05 20 16     2.593    2.947  101.2   19.1    67   13.1 
2025-12-22 00:00 UT   00 35 33.3   +05 25 37     2.606    2.945  100.3   19.2    67   13.1 
2025-12-23 00:00 UT   00 35 58.9   +05 31 04     2.619    2.944   99.4   19.2    67   13.1 
2025-12-24 00:00 UT   00 36 25.7   +05 36 37     2.632    2.943   98.5   19.3    67   13.1 
2025-12-25 00:00 UT   00 36 53.7   +05 42 16     2.645    2.941   97.6   19.4    67   13.1 
2025-12-26 00:00 UT   00 37 22.8   +05 47 60     2.657    2.940   96.8   19.4    67   13.1 
2025-12-27 00:00 UT   00 37 53.1   +05 53 49     2.670    2.939   95.9   19.4    67   13.1 
2025-12-28 00:00 UT   00 38 24.4   +05 59 44     2.683    2.938   95.0   19.5    67   13.1 
2025-12-29 00:00 UT   00 38 56.9   +06 05 44     2.696    2.936   94.2   19.5    67   13.2 
2025-12-30 00:00 UT   00 39 30.4   +06 11 49     2.709    2.935   93.3   19.5    67   13.2 
2025-12-31 00:00 UT   00 40 05.0   +06 17 59     2.722    2.934   92.5   19.6    67   13.2 
2026-01-01 00:00 UT   00 40 40.6   +06 24 14     2.735    2.933   91.6   19.6    67   13.2 
2026-01-02 00:00 UT   00 41 17.3   +06 30 34     2.748    2.931   90.8   19.6    67   13.2 
2026-01-03 00:00 UT   00 41 55.0   +06 36 59     2.761    2.930   90.0   19.6    67   13.2 
2026-01-04 00:00 UT   00 42 33.7   +06 43 28     2.774    2.929   89.1   19.6    67   13.2 
2026-01-05 00:00 UT   00 43 13.5   +06 50 02     2.787    2.928   88.3   19.6    67   13.2 
2026-01-06 00:00 UT   00 43 54.2   +06 56 41     2.800    2.927   87.5   19.6    67   13.2 
2026-01-07 00:00 UT   00 44 35.8   +07 03 25     2.812    2.925   86.7   19.6    67   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.