(250) Bettina
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Opposition	8 Oct 2025	11.8	3.043 AU	2.044 AU	01h01m	+03°33'	177.1°	0.9°
Today	10 Oct 2025	11.8	3.041 AU	2.043 AU	01h00m	+03°31'	177.0°	1.0°

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. A more printer-friendly version of the same chart can be found below.

Ephemerides:

Date       Time       RA (2000)    DEC (2000)    delta   radius  elong  phase   PA    magn
2025-10-10 00:00 UT   01 00 36.3   +03 31 13     2.043    3.041  177.0    1.0     3   11.8 
2025-10-10 04:47 UT   01 00 25.8   +03 30 56     2.043    3.040  176.9    1.0     7   11.8 
2025-10-11 00:00 UT   00 59 43.7   +03 29 46     2.042    3.039  176.4    1.2    20   11.8 
2025-10-12 00:00 UT   00 58 51.2   +03 28 20     2.042    3.038  175.5    1.5    32   11.8 
2025-10-13 00:00 UT   00 57 58.8   +03 26 56     2.042    3.037  174.5    1.8    40   11.9 
2025-10-14 00:00 UT   00 57 06.4   +03 25 34     2.042    3.035  173.4    2.2    45   11.9 
2025-10-15 00:00 UT   00 56 14.2   +03 24 14     2.043    3.034  172.3    2.5    49   11.9 
2025-10-16 00:00 UT   00 55 22.3   +03 22 56     2.043    3.033  171.2    2.9    52   11.9 
2025-10-17 00:00 UT   00 54 30.6   +03 21 41     2.045    3.031  170.1    3.3    54   12.0 
2025-10-18 00:00 UT   00 53 39.2   +03 20 28     2.046    3.030  168.9    3.6    56   12.0 
2025-10-19 00:00 UT   00 52 48.3   +03 19 19     2.048    3.029  167.7    4.0    57   12.0 
2025-10-20 00:00 UT   00 51 57.7   +03 18 13     2.050    3.027  166.6    4.4    58   12.0 
2025-10-21 00:00 UT   00 51 07.7   +03 17 10     2.052    3.026  165.4    4.8    59   12.1 
2025-10-22 00:00 UT   00 50 18.2   +03 16 11     2.055    3.025  164.2    5.1    60   12.1 
2025-10-23 00:00 UT   00 49 29.3   +03 15 16     2.057    3.023  163.1    5.5    61   12.1 
2025-10-24 00:00 UT   00 48 41.0   +03 14 25     2.061    3.022  161.9    5.9    62   12.1 
2025-10-25 00:00 UT   00 47 53.4   +03 13 39     2.064    3.021  160.7    6.2    62   12.1 
2025-10-26 00:00 UT   00 47 06.6   +03 12 57     2.068    3.019  159.5    6.6    63   12.2 
2025-10-27 00:00 UT   00 46 20.5   +03 12 20     2.072    3.018  158.4    7.0    63   12.2 
2025-10-28 00:00 UT   00 45 35.2   +03 11 47     2.076    3.017  157.2    7.3    63   12.2 
2025-10-29 00:00 UT   00 44 50.8   +03 11 20     2.080    3.015  156.0    7.7    64   12.2 
2025-10-30 00:00 UT   00 44 07.3   +03 10 58     2.085    3.014  154.9    8.0    64   12.2 
2025-10-31 00:00 UT   00 43 24.8   +03 10 41     2.090    3.013  153.7    8.4    64   12.3 
2025-11-01 00:00 UT   00 42 43.2   +03 10 30     2.095    3.011  152.6    8.7    64   12.3 
2025-11-02 00:00 UT   00 42 02.6   +03 10 25     2.101    3.010  151.4    9.1    65   12.3 
2025-11-03 00:00 UT   00 41 23.1   +03 10 25     2.107    3.009  150.3    9.4    65   12.3 
2025-11-04 00:00 UT   00 40 44.6   +03 10 31     2.113    3.007  149.1    9.7    65   12.3 
2025-11-05 00:00 UT   00 40 07.3   +03 10 43     2.119    3.006  148.0   10.1    65   12.4 
2025-11-06 00:00 UT   00 39 31.0   +03 11 01     2.125    3.005  146.8   10.4    65   12.4 
2025-11-07 00:00 UT   00 38 55.9   +03 11 26     2.132    3.003  145.7   10.7    66   12.4 
2025-11-08 00:00 UT   00 38 22.0   +03 11 56     2.139    3.002  144.6   11.0    66   12.4 
2025-11-09 00:00 UT   00 37 49.3   +03 12 33     2.146    3.001  143.5   11.3    66   12.4 

    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.