(176) Iduna
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	23 Feb 2026	13.8	2.904 AU	2.550 AU	05h09m	-02°33'	100.8°	19.6°
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
2026-02-23 00:00 UT   05 09 30.2   -02 33 38     2.550    2.904  100.8   19.6    79   13.8 
2026-02-23 00:16 UT   05 09 30.6   -02 33 33     2.550    2.904  100.8   19.6    79   13.8 
2026-02-24 00:00 UT   05 10 01.9   -02 26 23     2.564    2.905  100.1   19.6    80   13.8 
2026-02-25 00:00 UT   05 10 34.6   -02 19 08     2.577    2.907   99.3   19.6    80   13.8 
2026-02-26 00:00 UT   05 11 08.6   -02 11 54     2.591    2.908   98.6   19.7    81   13.8 
2026-02-27 00:00 UT   05 11 43.7   -02 04 41     2.605    2.910   97.8   19.7    81   13.8 
2026-02-28 00:00 UT   05 12 19.8   -01 57 29     2.618    2.911   97.1   19.7    82   13.8 
2026-03-01 00:00 UT   05 12 57.1   -01 50 18     2.632    2.913   96.3   19.8    82   13.8 
2026-03-02 00:00 UT   05 13 35.5   -01 43 08     2.646    2.915   95.6   19.8    82   13.8 
2026-03-03 00:00 UT   05 14 14.9   -01 35 60     2.660    2.916   94.9   19.8    83   13.9 
2026-03-04 00:00 UT   05 14 55.4   -01 28 53     2.673    2.918   94.1   19.8    83   13.9 
2026-03-05 00:00 UT   05 15 36.9   -01 21 48     2.687    2.919   93.4   19.8    84   13.9 
2026-03-06 00:00 UT   05 16 19.5   -01 14 45     2.701    2.921   92.7   19.8    84   13.9 
2026-03-07 00:00 UT   05 17 03.1   -01 07 44     2.715    2.923   92.0   19.8    84   13.9 
2026-03-08 00:00 UT   05 17 47.6   -01 00 45     2.729    2.924   91.3   19.8    85   13.9 
2026-03-09 00:00 UT   05 18 33.1   +00 53 49     2.743    2.926   90.5   19.8    85   13.9 
2026-03-10 00:00 UT   05 19 19.6   +00 46 54     2.757    2.927   89.8   19.8    86   13.9 
2026-03-11 00:00 UT   05 20 07.1   +00 40 03     2.771    2.929   89.1   19.8    86   14.0 
2026-03-12 00:00 UT   05 20 55.5   +00 33 13     2.785    2.931   88.4   19.8    86   14.0 
2026-03-13 00:00 UT   05 21 44.8   +00 26 27     2.799    2.932   87.7   19.8    87   14.0 
2026-03-14 00:00 UT   05 22 35.1   +00 19 43     2.812    2.934   87.0   19.8    87   14.0 
2026-03-15 00:00 UT   05 23 26.2   +00 13 02     2.826    2.935   86.3   19.8    88   14.0 
2026-03-16 00:00 UT   05 24 18.3   +00 06 24     2.840    2.937   85.6   19.7    88   14.0 
2026-03-17 00:00 UT   05 25 11.2   +00 00 11     2.854    2.939   84.9   19.7    88   14.0 
2026-03-18 00:00 UT   05 26 05.0   +00 06 42     2.868    2.940   84.2   19.7    89   14.0 
2026-03-19 00:00 UT   05 26 59.6   +00 13 10     2.882    2.942   83.6   19.6    89   14.1 
2026-03-20 00:00 UT   05 27 55.0   +00 19 35     2.896    2.943   82.9   19.6    90   14.1 
2026-03-21 00:00 UT   05 28 51.3   +00 25 56     2.910    2.945   82.2   19.6    90   14.1 
2026-03-22 00:00 UT   05 29 48.4   +00 32 13     2.924    2.947   81.5   19.5    90   14.1 
2026-03-23 00:00 UT   05 30 46.3   +00 38 27     2.938    2.948   80.8   19.5    91   14.1 
2026-03-24 00:00 UT   05 31 45.0   +00 44 37     2.952    2.950   80.2   19.4    91   14.1 
2026-03-25 00:00 UT   05 32 44.4   +00 50 43     2.966    2.952   79.5   19.4    91   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.