(211) Isolda
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	27 Apr 2024	13.3	2.913 AU	2.529 AU	09h20m	+10°58'	102.2°	19.7°
Opposition	1 May 2025	12.7	3.404 AU	2.398 AU	14h32m	-18°50'	176.3°	1.1°

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 Isolda are:

            e (Eccentricity)                : 0.1548287
            a (Semimajor axis)              : 3.0460375
            i (Inclination)                 : 3.87371
            Ω (Longitude of ascending node) : 263.17166
            ω (Argument of perihelion)      : 173.46679
            M (Mean anomaly)                : 60.04600
            Epoch                           : 2024 Mar 31

            L (Longitude of perihelion)     : 256.65325
            B (Latitude of perihelion)      : 0.44042
            P (Orbital period in years)     : 5.32            
        

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
2024-04-27 00:00 UT   09 20 40.7   +10 58 34     2.529    2.913  102.2   19.7   107   13.3 
2024-04-27 02:35 UT   09 20 44.4   +10 58 25     2.530    2.913  102.1   19.7   107   13.3 
2024-04-28 00:00 UT   09 21 15.4   +10 57 01     2.543    2.914  101.4   19.8   107   13.4 
2024-04-29 00:00 UT   09 21 51.1   +10 55 22     2.558    2.916  100.5   19.9   107   13.4 
2024-04-30 00:00 UT   09 22 27.9   +10 53 37     2.573    2.917   99.7   19.9   107   13.4 
2024-05-01 00:00 UT   09 23 05.6   +10 51 47     2.588    2.919   98.9   19.9   107   13.4 
2024-05-02 00:00 UT   09 23 44.3   +10 49 51     2.602    2.920   98.1   20.0   107   13.4 
2024-05-03 00:00 UT   09 24 24.0   +10 47 50     2.617    2.922   97.3   20.0   108   13.4 
2024-05-04 00:00 UT   09 25 04.7   +10 45 43     2.632    2.923   96.5   20.0   108   13.4 
2024-05-05 00:00 UT   09 25 46.2   +10 43 31     2.647    2.925   95.7   20.1   108   13.5 
2024-05-06 00:00 UT   09 26 28.7   +10 41 14     2.662    2.926   94.9   20.1   108   13.5 
2024-05-07 00:00 UT   09 27 12.1   +10 38 51     2.677    2.928   94.1   20.1   108   13.5 
2024-05-08 00:00 UT   09 27 56.4   +10 36 22     2.692    2.929   93.4   20.1   108   13.5 
2024-05-09 00:00 UT   09 28 41.6   +10 33 48     2.707    2.931   92.6   20.1   108   13.5 
2024-05-10 00:00 UT   09 29 27.6   +10 31 09     2.721    2.933   91.8   20.1   108   13.5 
2024-05-11 00:00 UT   09 30 14.5   +10 28 24     2.736    2.934   91.0   20.1   108   13.5 
2024-05-12 00:00 UT   09 31 02.2   +10 25 35     2.751    2.936   90.3   20.1   108   13.5 
2024-05-13 00:00 UT   09 31 50.7   +10 22 40     2.766    2.937   89.5   20.1   109   13.6 
2024-05-14 00:00 UT   09 32 40.0   +10 19 39     2.781    2.939   88.8   20.1   109   13.6 
2024-05-15 00:00 UT   09 33 30.0   +10 16 34     2.796    2.940   88.0   20.1   109   13.6 
2024-05-16 00:00 UT   09 34 20.9   +10 13 24     2.811    2.942   87.3   20.1   109   13.6 
2024-05-17 00:00 UT   09 35 12.4   +10 10 08     2.826    2.943   86.5   20.1   109   13.6 
2024-05-18 00:00 UT   09 36 04.7   +10 06 48     2.841    2.945   85.8   20.0   109   13.6 
2024-05-19 00:00 UT   09 36 57.7   +10 03 22     2.856    2.946   85.0   20.0   109   13.6 
2024-05-20 00:00 UT   09 37 51.4   +09 59 52     2.871    2.948   84.3   20.0   109   13.6 
2024-05-21 00:00 UT   09 38 45.8   +09 56 17     2.886    2.949   83.6   19.9   109   13.7 
2024-05-22 00:00 UT   09 39 40.8   +09 52 37     2.901    2.951   82.9   19.9   110   13.7 
2024-05-23 00:00 UT   09 40 36.5   +09 48 52     2.916    2.953   82.1   19.9   110   13.7 
2024-05-24 00:00 UT   09 41 32.8   +09 45 02     2.930    2.954   81.4   19.8   110   13.7 
2024-05-25 00:00 UT   09 42 29.8   +09 41 08     2.945    2.956   80.7   19.8   110   13.7 
2024-05-26 00:00 UT   09 43 27.4   +09 37 09     2.960    2.957   80.0   19.7   110   13.7 
2024-05-27 00:00 UT   09 44 25.5   +09 33 05     2.975    2.959   79.3   19.7   110   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.