(176) Iduna
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Opposition	12 Dec 2025	12.7	2.797 AU	1.901 AU	05h28m	-06°54'	149.9°	10.2°
Today	22 Jan 2026	13.3	2.855 AU	2.159 AU	05h04m	-06°07'	126.3°	16.1°

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 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
2026-01-22 00:00 UT   05 04 08.6   -06 07 37     2.159    2.855  126.3   16.1    60   13.3 
2026-01-22 20:35 UT   05 03 58.5   -06 02 58     2.168    2.856  125.6   16.3    61   13.3 
2026-01-23 00:00 UT   05 03 57.0   -06 02 11     2.170    2.856  125.5   16.3    61   13.3 
2026-01-24 00:00 UT   05 03 46.8   -05 56 37     2.180    2.858  124.7   16.5    62   13.3 
2026-01-25 00:00 UT   05 03 38.0   -05 50 56     2.191    2.859  123.9   16.6    62   13.3 
2026-01-26 00:00 UT   05 03 30.7   -05 45 07     2.202    2.861  123.0   16.8    63   13.3 
2026-01-27 00:00 UT   05 03 24.9   -05 39 12     2.213    2.862  122.2   16.9    64   13.3 
2026-01-28 00:00 UT   05 03 20.5   -05 33 10     2.224    2.864  121.4   17.1    65   13.4 
2026-01-29 00:00 UT   05 03 17.5   -05 27 02     2.235    2.865  120.6   17.2    65   13.4 
2026-01-30 00:00 UT   05 03 16.0   -05 20 48     2.247    2.867  119.8   17.4    66   13.4 
2026-01-31 00:00 UT   05 03 15.9   -05 14 28     2.258    2.868  119.0   17.5    67   13.4 
2026-02-01 00:00 UT   05 03 17.2   -05 08 03     2.270    2.870  118.2   17.6    67   13.4 
2026-02-02 00:00 UT   05 03 19.9   -05 01 34     2.282    2.871  117.3   17.8    68   13.4 
2026-02-03 00:00 UT   05 03 24.1   -04 54 59     2.294    2.873  116.5   17.9    69   13.5 
2026-02-04 00:00 UT   05 03 29.6   -04 48 20     2.306    2.874  115.7   18.0    69   13.5 
2026-02-05 00:00 UT   05 03 36.6   -04 41 37     2.318    2.876  114.9   18.1    70   13.5 
2026-02-06 00:00 UT   05 03 44.9   -04 34 50     2.330    2.877  114.1   18.2    70   13.5 
2026-02-07 00:00 UT   05 03 54.7   -04 27 60     2.342    2.879  113.3   18.3    71   13.5 
2026-02-08 00:00 UT   05 04 05.8   -04 21 06     2.355    2.880  112.5   18.4    72   13.5 
2026-02-09 00:00 UT   05 04 18.2   -04 14 09     2.367    2.882  111.7   18.5    72   13.6 
2026-02-10 00:00 UT   05 04 32.0   -04 07 09     2.380    2.883  110.9   18.6    73   13.6 
2026-02-11 00:00 UT   05 04 47.2   -04 00 06     2.392    2.885  110.1   18.7    73   13.6 
2026-02-12 00:00 UT   05 05 03.7   -03 53 01     2.405    2.886  109.3   18.8    74   13.6 
2026-02-13 00:00 UT   05 05 21.5   -03 45 54     2.418    2.888  108.5   18.9    74   13.6 
2026-02-14 00:00 UT   05 05 40.7   -03 38 45     2.431    2.890  107.8   19.0    75   13.6 
2026-02-15 00:00 UT   05 06 01.1   -03 31 35     2.444    2.891  107.0   19.1    75   13.6 
2026-02-16 00:00 UT   05 06 22.9   -03 24 23     2.457    2.893  106.2   19.1    76   13.7 
2026-02-17 00:00 UT   05 06 45.9   -03 17 10     2.470    2.894  105.4   19.2    76   13.7 
2026-02-18 00:00 UT   05 07 10.2   -03 09 55     2.483    2.896  104.7   19.3    77   13.7 
2026-02-19 00:00 UT   05 07 35.7   -03 02 41     2.497    2.897  103.9   19.3    77   13.7 
2026-02-20 00:00 UT   05 08 02.5   -02 55 25     2.510    2.899  103.1   19.4    78   13.7 
2026-02-21 00:00 UT   05 08 30.5   -02 48 10     2.523    2.900  102.3   19.5    78   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.