(176) Iduna
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	25 Mar 2026	14.1	2.952 AU	2.966 AU	05h32m	+00°50'	79.5°	19.4°
Opposition	4 Mar 2027	13.6	3.490 AU	2.539 AU	10h31m	-11°39'	160.6°	5.4°

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)                : 0.1722468
            a (Semimajor axis)              : 3.1802398
            i (Inclination)                 : 22.67613
            Ω (Longitude of ascending node) : 200.45174
            ω (Argument of perihelion)      : 189.02649
            M (Mean anomaly)                : 34.81371
            Epoch                           : 2025 Nov 21

            L (Longitude of perihelion)     : 208.79068
            B (Latitude of perihelion)      : -3.46765
            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.

Ephemerides:

Date       Time       RA (2000)    DEC (2000)    delta   radius  elong  phase   PA    magn
2026-03-25 00:00 UT   05 32 44.4   +00 50 43     2.966    2.952   79.5   19.4    91   14.1 
2026-03-25 20:11 UT   05 33 35.0   +00 55 47     2.977    2.953   78.9   19.4    92   14.1 
2026-03-26 00:00 UT   05 33 44.6   +00 56 45     2.979    2.953   78.8   19.4    92   14.1 
2026-03-27 00:00 UT   05 34 45.6   +01 02 42     2.993    2.955   78.2   19.3    92   14.1 
2026-03-28 00:00 UT   05 35 47.2   +01 08 36     3.007    2.956   77.5   19.2    93   14.1 
2026-03-29 00:00 UT   05 36 49.5   +01 14 25     3.021    2.958   76.9   19.2    93   14.1 
2026-03-30 00:00 UT   05 37 52.6   +01 20 11     3.034    2.960   76.2   19.1    93   14.2 
2026-03-31 00:00 UT   05 38 56.3   +01 25 51     3.048    2.961   75.6   19.1    94   14.2 
2026-04-01 00:00 UT   05 40 00.7   +01 31 28     3.062    2.963   74.9   19.0    94   14.2 
2026-04-02 00:00 UT   05 41 05.7   +01 37 00     3.075    2.965   74.3   18.9    94   14.2 
2026-04-03 00:00 UT   05 42 11.4   +01 42 28     3.089    2.966   73.6   18.9    95   14.2 
2026-04-04 00:00 UT   05 43 17.7   +01 47 51     3.103    2.968   73.0   18.8    95   14.2 
2026-04-05 00:00 UT   05 44 24.7   +01 53 09     3.116    2.970   72.3   18.7    96   14.2 
2026-04-06 00:00 UT   05 45 32.2   +01 58 23     3.130    2.971   71.7   18.6    96   14.2 
2026-04-07 00:00 UT   05 46 40.4   +02 03 33     3.143    2.973   71.1   18.6    96   14.2 
2026-04-08 00:00 UT   05 47 49.1   +02 08 37     3.156    2.975   70.4   18.5    97   14.2 
2026-04-09 00:00 UT   05 48 58.4   +02 13 37     3.170    2.976   69.8   18.4    97   14.2 
2026-04-10 00:00 UT   05 50 08.3   +02 18 32     3.183    2.978   69.2   18.3    97   14.2 
2026-04-11 00:00 UT   05 51 18.8   +02 23 23     3.196    2.979   68.5   18.2    98   14.3 
2026-04-12 00:00 UT   05 52 29.8   +02 28 08     3.210    2.981   67.9   18.2    98   14.3 
2026-04-13 00:00 UT   05 53 41.4   +02 32 49     3.223    2.983   67.3   18.1    99   14.3 
2026-04-14 00:00 UT   05 54 53.4   +02 37 24     3.236    2.984   66.7   18.0    99   14.3 
2026-04-15 00:00 UT   05 56 06.0   +02 41 55     3.249    2.986   66.1   17.9    99   14.3 
2026-04-16 00:00 UT   05 57 19.2   +02 46 20     3.262    2.988   65.4   17.8   100   14.3 
2026-04-17 00:00 UT   05 58 32.8   +02 50 40     3.275    2.989   64.8   17.7   100   14.3 
2026-04-18 00:00 UT   05 59 46.9   +02 54 56     3.288    2.991   64.2   17.6   100   14.3 
2026-04-19 00:00 UT   06 01 01.5   +02 59 06     3.301    2.993   63.6   17.5   101   14.3 
2026-04-20 00:00 UT   06 02 16.5   +03 03 10     3.313    2.994   63.0   17.4   101   14.3 
2026-04-21 00:00 UT   06 03 32.1   +03 07 10     3.326    2.996   62.4   17.3   102   14.3 
2026-04-22 00:00 UT   06 04 48.0   +03 11 04     3.339    2.998   61.8   17.2   102   14.3 

    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.