(176) Iduna
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	23 Apr 2024	14.4	3.037 AU	3.242 AU	21h22m	+06°12'	69.4°	18.0°
Opposition	24 Aug 2024	12.8	2.840 AU	1.900 AU	21h37m	+14°05'	153.4°	9.2°

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 Iduna are:

            e (Eccentricity)                : 0.1719214
            a (Semimajor axis)              : 3.1794243
            i (Inclination)                 : 22.67981
            Ω (Longitude of ascending node) : 200.46597
            ω (Argument of perihelion)      : 188.84228
            M (Mean anomaly)                : 290.63410
            Epoch                           : 2024 Mar 31

            L (Longitude of perihelion)     : 208.63412
            B (Latitude of perihelion)      : -3.39789
            P (Orbital period in years)     : 5.67            
        

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
2024-04-23 00:00 UT   21 22 23.9   +06 12 23     3.242    3.037   69.4   18.0   259   14.4 
2024-04-23 14:27 UT   21 23 00.8   +06 17 49     3.234    3.036   69.7   18.1   259   14.4 
2024-04-24 00:00 UT   21 23 25.2   +06 21 24     3.228    3.035   70.0   18.1   259   14.4 
2024-04-25 00:00 UT   21 24 25.9   +06 30 25     3.215    3.033   70.6   18.2   258   14.4 
2024-04-26 00:00 UT   21 25 26.0   +06 39 27     3.202    3.032   71.2   18.3   258   14.4 
2024-04-27 00:00 UT   21 26 25.5   +06 48 30     3.188    3.030   71.9   18.4   258   14.4 
2024-04-28 00:00 UT   21 27 24.5   +06 57 32     3.175    3.028   72.5   18.5   257   14.4 
2024-04-29 00:00 UT   21 28 22.8   +07 06 36     3.161    3.027   73.1   18.6   257   14.3 
2024-04-30 00:00 UT   21 29 20.6   +07 15 39     3.148    3.025   73.8   18.6   257   14.3 
2024-05-01 00:00 UT   21 30 17.7   +07 24 43     3.134    3.023   74.4   18.7   256   14.3 
2024-05-02 00:00 UT   21 31 14.2   +07 33 47     3.121    3.022   75.1   18.8   256   14.3 
2024-05-03 00:00 UT   21 32 10.0   +07 42 51     3.107    3.020   75.7   18.9   256   14.3 
2024-05-04 00:00 UT   21 33 05.2   +07 51 55     3.093    3.018   76.3   18.9   255   14.3 
2024-05-05 00:00 UT   21 33 59.8   +08 00 59     3.079    3.017   77.0   19.0   255   14.3 
2024-05-06 00:00 UT   21 34 53.7   +08 10 03     3.066    3.015   77.6   19.1   255   14.3 
2024-05-07 00:00 UT   21 35 46.9   +08 19 06     3.052    3.013   78.3   19.1   254   14.3 
2024-05-08 00:00 UT   21 36 39.4   +08 28 08     3.038    3.012   78.9   19.2   254   14.3 
2024-05-09 00:00 UT   21 37 31.2   +08 37 10     3.024    3.010   79.6   19.3   254   14.3 
2024-05-10 00:00 UT   21 38 22.2   +08 46 12     3.011    3.008   80.2   19.3   254   14.3 
2024-05-11 00:00 UT   21 39 12.6   +08 55 12     2.997    3.007   80.9   19.4   253   14.2 
2024-05-12 00:00 UT   21 40 02.3   +09 04 11     2.983    3.005   81.5   19.4   253   14.2 
2024-05-13 00:00 UT   21 40 51.2   +09 13 10     2.969    3.003   82.2   19.5   253   14.2 
2024-05-14 00:00 UT   21 41 39.3   +09 22 07     2.955    3.002   82.9   19.5   252   14.2 
2024-05-15 00:00 UT   21 42 26.8   +09 31 03     2.941    3.000   83.5   19.6   252   14.2 
2024-05-16 00:00 UT   21 43 13.4   +09 39 57     2.927    2.998   84.2   19.6   252   14.2 
2024-05-17 00:00 UT   21 43 59.3   +09 48 50     2.913    2.997   84.9   19.6   251   14.2 
2024-05-18 00:00 UT   21 44 44.4   +09 57 41     2.899    2.995   85.5   19.7   251   14.2 
2024-05-19 00:00 UT   21 45 28.7   +10 06 31     2.885    2.993   86.2   19.7   251   14.2 
2024-05-20 00:00 UT   21 46 12.2   +10 15 18     2.871    2.992   86.9   19.7   250   14.2 
2024-05-21 00:00 UT   21 46 55.0   +10 24 04     2.857    2.990   87.5   19.8   250   14.1 
2024-05-22 00:00 UT   21 47 36.9   +10 32 48     2.843    2.988   88.2   19.8   250   14.1 
2024-05-23 00:00 UT   21 48 17.9   +10 41 29     2.830    2.987   88.9   19.8   249   14.1 

    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.