(176) Iduna
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	22 Oct 2026	14.7	3.301 AU	3.815 AU	10h13m	-06°48'	52.2°	13.8°
Opposition	4 Mar 2027	13.6	3.491 AU	2.540 AU	10h31m	-11°37'	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)                : 0.1726084
            a (Semimajor axis)              : 3.1818836
            i (Inclination)                 : 22.67316
            Ω (Longitude of ascending node) : 200.40096
            ω (Argument of perihelion)      : 189.17720
            M (Mean anomaly)                : 69.43397
            Epoch                           : 2026 Jun 09

            L (Longitude of perihelion)     : 208.87966
            B (Latitude of perihelion)      : -3.52469
            P (Orbital period in years)     : 5.68            
        

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
2026-10-22 00:00 UT   10 13 48.8   -06 48 05     3.815    3.301   52.2   13.8   278   14.7 
2026-10-22 10:04 UT   10 14 14.8   -06 51 13     3.811    3.302   52.5   13.8   279   14.7 
2026-10-23 00:00 UT   10 14 50.6   -06 55 34     3.806    3.303   52.9   13.9   279   14.7 
2026-10-24 00:00 UT   10 15 52.0   -07 03 04     3.797    3.304   53.6   14.0   279   14.7 
2026-10-25 00:00 UT   10 16 52.8   -07 10 32     3.787    3.306   54.2   14.1   280   14.7 
2026-10-26 00:00 UT   10 17 53.2   -07 18 01     3.777    3.307   54.9   14.2   280   14.7 
2026-10-27 00:00 UT   10 18 53.0   -07 25 29     3.768    3.309   55.6   14.3   280   14.7 
2026-10-28 00:00 UT   10 19 52.3   -07 32 57     3.758    3.310   56.2   14.5   281   14.7 
2026-10-29 00:00 UT   10 20 51.1   -07 40 24     3.748    3.312   56.9   14.6   281   14.7 
2026-10-30 00:00 UT   10 21 49.3   -07 47 50     3.738    3.314   57.6   14.7   281   14.7 
2026-10-31 00:00 UT   10 22 47.0   -07 55 16     3.728    3.315   58.3   14.8   282   14.7 
2026-11-01 00:00 UT   10 23 44.2   -08 02 41     3.718    3.317   59.0   14.9   282   14.7 
2026-11-02 00:00 UT   10 24 40.7   -08 10 05     3.707    3.318   59.6   15.0   282   14.7 
2026-11-03 00:00 UT   10 25 36.7   -08 17 29     3.697    3.320   60.3   15.1   282   14.7 
2026-11-04 00:00 UT   10 26 32.2   -08 24 51     3.686    3.321   61.0   15.1   283   14.7 
2026-11-05 00:00 UT   10 27 27.0   -08 32 12     3.676    3.323   61.7   15.2   283   14.7 
2026-11-06 00:00 UT   10 28 21.2   -08 39 32     3.665    3.324   62.4   15.3   283   14.7 
2026-11-07 00:00 UT   10 29 14.8   -08 46 51     3.654    3.326   63.1   15.4   284   14.7 
2026-11-08 00:00 UT   10 30 07.8   -08 54 09     3.643    3.327   63.8   15.5   284   14.7 
2026-11-09 00:00 UT   10 31 00.2   -09 01 25     3.632    3.329   64.5   15.6   284   14.7 
2026-11-10 00:00 UT   10 31 52.0   -09 08 39     3.621    3.330   65.3   15.7   285   14.7 
2026-11-11 00:00 UT   10 32 43.1   -09 15 52     3.610    3.332   66.0   15.8   285   14.7 
2026-11-12 00:00 UT   10 33 33.5   -09 23 03     3.599    3.334   66.7   15.8   285   14.7 
2026-11-13 00:00 UT   10 34 23.3   -09 30 13     3.587    3.335   67.4   15.9   285   14.7 
2026-11-14 00:00 UT   10 35 12.3   -09 37 20     3.576    3.337   68.2   16.0   286   14.7 
2026-11-15 00:00 UT   10 36 00.8   -09 44 25     3.564    3.338   68.9   16.1   286   14.7 
2026-11-16 00:00 UT   10 36 48.5   -09 51 29     3.553    3.340   69.6   16.1   286   14.7 
2026-11-17 00:00 UT   10 37 35.5   -09 58 30     3.541    3.341   70.4   16.2   287   14.6 
2026-11-18 00:00 UT   10 38 21.8   -10 05 29     3.529    3.343   71.1   16.2   287   14.6 
2026-11-19 00:00 UT   10 39 07.4   -10 12 25     3.518    3.344   71.8   16.3   287   14.6 
2026-11-20 00:00 UT   10 39 52.3   -10 19 19     3.506    3.346   72.6   16.4   287   14.6 
2026-11-21 00:00 UT   10 40 36.4   -10 26 11     3.494    3.347   73.3   16.4   288   14.6 

    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.