(250) Bettina
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	26 Apr 2024	14.1	3.557 AU	3.476 AU	21h04m	-30°26'	86.4°	16.4°
Opposition	28 Jul 2024	12.9	3.515 AU	2.534 AU	20h55m	-35°36'	162.5°	5.0°

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)                : 0.1365588
            a (Semimajor axis)              : 3.1431651
            i (Inclination)                 : 12.81935
            Ω (Longitude of ascending node) : 23.80263
            ω (Argument of perihelion)      : 75.76885
            M (Mean anomaly)                : 192.62403
            Epoch                           : 2024 Mar 31

            L (Longitude of perihelion)     : 99.22301
            B (Latitude of perihelion)      : 12.41956
            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
2024-04-26 00:00 UT   21 04 19.1   -30 26 51     3.476    3.557   86.4   16.4   252   14.1 
2024-04-26 23:36 UT   21 05 04.4   -30 27 15     3.462    3.557   87.2   16.4   252   14.1 
2024-04-27 00:00 UT   21 05 05.2   -30 27 15     3.461    3.557   87.2   16.4   252   14.1 
2024-04-28 00:00 UT   21 05 50.5   -30 27 44     3.447    3.557   88.0   16.4   252   14.0 
2024-04-29 00:00 UT   21 06 34.9   -30 28 17     3.432    3.556   88.8   16.4   252   14.0 
2024-04-30 00:00 UT   21 07 18.4   -30 28 55     3.418    3.556   89.6   16.5   253   14.0 
2024-05-01 00:00 UT   21 08 01.1   -30 29 37     3.403    3.556   90.4   16.5   253   14.0 
2024-05-02 00:00 UT   21 08 42.8   -30 30 25     3.389    3.556   91.2   16.5   253   14.0 
2024-05-03 00:00 UT   21 09 23.6   -30 31 16     3.374    3.555   92.0   16.5   253   14.0 
2024-05-04 00:00 UT   21 10 03.5   -30 32 13     3.360    3.555   92.8   16.5   253   14.0 
2024-05-05 00:00 UT   21 10 42.5   -30 33 15     3.345    3.555   93.6   16.4   253   14.0 
2024-05-06 00:00 UT   21 11 20.5   -30 34 21     3.331    3.554   94.4   16.4   253   14.0 
2024-05-07 00:00 UT   21 11 57.5   -30 35 33     3.316    3.554   95.3   16.4   254   14.0 
2024-05-08 00:00 UT   21 12 33.5   -30 36 49     3.302    3.554   96.1   16.4   254   13.9 
2024-05-09 00:00 UT   21 13 08.6   -30 38 11     3.288    3.553   96.9   16.4   254   13.9 
2024-05-10 00:00 UT   21 13 42.6   -30 39 37     3.273    3.553   97.7   16.4   254   13.9 
2024-05-11 00:00 UT   21 14 15.6   -30 41 09     3.259    3.552   98.6   16.3   254   13.9 
2024-05-12 00:00 UT   21 14 47.7   -30 42 46     3.245    3.552   99.4   16.3   254   13.9 
2024-05-13 00:00 UT   21 15 18.6   -30 44 28     3.230    3.552  100.2   16.3   255   13.9 
2024-05-14 00:00 UT   21 15 48.5   -30 46 15     3.216    3.551  101.1   16.2   255   13.9 
2024-05-15 00:00 UT   21 16 17.4   -30 48 08     3.202    3.551  101.9   16.2   255   13.9 
2024-05-16 00:00 UT   21 16 45.2   -30 50 05     3.188    3.551  102.8   16.1   255   13.9 
2024-05-17 00:00 UT   21 17 11.9   -30 52 08     3.174    3.550  103.6   16.1   255   13.8 
2024-05-18 00:00 UT   21 17 37.6   -30 54 17     3.160    3.550  104.5   16.0   256   13.8 
2024-05-19 00:00 UT   21 18 02.1   -30 56 30     3.146    3.550  105.3   16.0   256   13.8 
2024-05-20 00:00 UT   21 18 25.5   -30 58 49     3.132    3.549  106.2   15.9   256   13.8 
2024-05-21 00:00 UT   21 18 47.8   -31 01 13     3.118    3.549  107.0   15.8   256   13.8 
2024-05-22 00:00 UT   21 19 09.0   -31 03 42     3.104    3.548  107.9   15.8   257   13.8 
2024-05-23 00:00 UT   21 19 29.0   -31 06 16     3.090    3.548  108.8   15.7   257   13.8 
2024-05-24 00:00 UT   21 19 47.9   -31 08 56     3.077    3.548  109.6   15.6   257   13.8 
2024-05-25 00:00 UT   21 20 05.6   -31 11 41     3.063    3.547  110.5   15.5   257   13.8 
2024-05-26 00:00 UT   21 20 22.2   -31 14 31     3.050    3.547  111.4   15.4   258   13.7 

    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.