(176) Iduna
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	23 Jun 2026	14.5	3.102 AU	3.958 AU	07h32m	+04°15'	28.4°	9.0°
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
2026-06-23 00:00 UT   07 32 11.7   +04 15 32     3.958    3.102   28.4    9.0   134   14.5 
2026-06-23 23:19 UT   07 33 37.9   +04 13 48     3.964    3.103   28.0    8.8   135   14.5 
2026-06-24 00:00 UT   07 33 40.4   +04 13 45     3.964    3.104   28.0    8.8   135   14.5 
2026-06-25 00:00 UT   07 35 09.1   +04 11 53     3.971    3.105   27.5    8.7   136   14.5 
2026-06-26 00:00 UT   07 36 37.8   +04 09 56     3.978    3.107   27.0    8.6   137   14.5 
2026-06-27 00:00 UT   07 38 06.5   +04 07 54     3.984    3.109   26.6    8.4   138   14.5 
2026-06-28 00:00 UT   07 39 35.2   +04 05 47     3.990    3.110   26.2    8.3   139   14.5 
2026-06-29 00:00 UT   07 41 03.9   +04 03 35     3.996    3.112   25.7    8.1   140   14.5 
2026-06-30 00:00 UT   07 42 32.6   +04 01 18     4.002    3.114   25.3    8.0   141   14.5 
2026-07-01 00:00 UT   07 44 01.2   +03 58 57     4.008    3.115   24.9    7.9   142   14.5 
2026-07-02 00:00 UT   07 45 29.8   +03 56 30     4.014    3.117   24.4    7.8   143   14.4 
2026-07-03 00:00 UT   07 46 58.4   +03 53 59     4.020    3.119   24.0    7.6   144   14.4 
2026-07-04 00:00 UT   07 48 27.0   +03 51 23     4.025    3.120   23.6    7.5   145   14.4 
2026-07-05 00:00 UT   07 49 55.6   +03 48 42     4.031    3.122   23.2    7.4   146   14.4 
2026-07-06 00:00 UT   07 51 24.1   +03 45 56     4.036    3.124   22.8    7.2   147   14.4 
2026-07-07 00:00 UT   07 52 52.6   +03 43 06     4.041    3.125   22.4    7.1   149   14.4 
2026-07-08 00:00 UT   07 54 21.0   +03 40 11     4.046    3.127   22.0    7.0   150   14.4 
2026-07-09 00:00 UT   07 55 49.4   +03 37 11     4.051    3.129   21.7    6.9   151   14.4 
2026-07-10 00:00 UT   07 57 17.7   +03 34 06     4.056    3.130   21.3    6.8   152   14.4 
2026-07-11 00:00 UT   07 58 46.0   +03 30 57     4.060    3.132   20.9    6.7   154   14.4 
2026-07-12 00:00 UT   08 00 14.3   +03 27 43     4.065    3.134   20.6    6.6   155   14.4 
2026-07-13 00:00 UT   08 01 42.4   +03 24 25     4.069    3.136   20.3    6.4   157   14.4 
2026-07-14 00:00 UT   08 03 10.5   +03 21 02     4.074    3.137   19.9    6.3   158   14.4 
2026-07-15 00:00 UT   08 04 38.6   +03 17 35     4.078    3.139   19.6    6.2   160   14.4 

    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.