(14) Irene
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	9 Sep 2026	11.5	2.598 AU	2.291 AU	17h24m	-26°33'	96.1°	22.7°
Opposition	21 Sep 2027	10.9	3.006 AU	2.021 AU	00h15m	-13°15'	166.4°	4.5°

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 Irene are:

            e (Eccentricity)                : 0.1627828
            a (Semimajor axis)              : 2.5883491
            i (Inclination)                 : 9.12924
            Ω (Longitude of ascending node) : 86.01072
            ω (Argument of perihelion)      : 98.30619
            M (Mean anomaly)                : 60.22804
            Epoch                           : 2026 Jun 09

            L (Longitude of perihelion)     : 4.42196
            B (Latitude of perihelion)      : 9.03267
            P (Orbital period in years)     : 4.16            
        

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
2026-09-09 00:00 UT   17 24 30.5   -26 33 01     2.291    2.598   96.1   22.7    93   11.5 
2026-09-09 13:00 UT   17 25 01.9   -26 34 06     2.299    2.599   95.7   22.7    93   11.5 
2026-09-10 00:00 UT   17 25 28.8   -26 35 01     2.305    2.600   95.3   22.7    93   11.5 
2026-09-11 00:00 UT   17 26 28.1   -26 36 59     2.320    2.602   94.6   22.7    93   11.5 
2026-09-12 00:00 UT   17 27 28.6   -26 38 56     2.335    2.603   93.8   22.7    93   11.5 
2026-09-13 00:00 UT   17 28 30.2   -26 40 51     2.349    2.605   93.1   22.7    93   11.6 
2026-09-14 00:00 UT   17 29 32.8   -26 42 44     2.364    2.607   92.3   22.7    93   11.6 
2026-09-15 00:00 UT   17 30 36.5   -26 44 35     2.379    2.608   91.6   22.7    93   11.6 
2026-09-16 00:00 UT   17 31 41.2   -26 46 24     2.393    2.610   90.9   22.7    93   11.6 
2026-09-17 00:00 UT   17 32 46.9   -26 48 11     2.408    2.612   90.2   22.6    93   11.6 
2026-09-18 00:00 UT   17 33 53.7   -26 49 56     2.423    2.614   89.4   22.6    93   11.6 
2026-09-19 00:00 UT   17 35 01.3   -26 51 39     2.437    2.615   88.7   22.6    93   11.6 
2026-09-20 00:00 UT   17 36 10.0   -26 53 20     2.452    2.617   88.0   22.6    92   11.7 
2026-09-21 00:00 UT   17 37 19.6   -26 54 58     2.467    2.619   87.3   22.5    92   11.7 
2026-09-22 00:00 UT   17 38 30.1   -26 56 34     2.482    2.621   86.6   22.5    92   11.7 
2026-09-23 00:00 UT   17 39 41.5   -26 58 08     2.496    2.622   85.9   22.4    92   11.7 
2026-09-24 00:00 UT   17 40 53.8   -26 59 39     2.511    2.624   85.1   22.4    92   11.7 
2026-09-25 00:00 UT   17 42 07.0   -27 01 07     2.526    2.626   84.4   22.3    92   11.7 
2026-09-26 00:00 UT   17 43 21.0   -27 02 33     2.540    2.627   83.7   22.3    92   11.7 
2026-09-27 00:00 UT   17 44 35.9   -27 03 57     2.555    2.629   83.0   22.2    92   11.7 
2026-09-28 00:00 UT   17 45 51.6   -27 05 18     2.570    2.631   82.3   22.2    92   11.8 
2026-09-29 00:00 UT   17 47 08.1   -27 06 36     2.584    2.632   81.6   22.1    92   11.8 
2026-09-30 00:00 UT   17 48 25.4   -27 07 51     2.599    2.634   81.0   22.1    92   11.8 
2026-10-01 00:00 UT   17 49 43.5   -27 09 03     2.613    2.636   80.3   22.0    92   11.8 
2026-10-02 00:00 UT   17 51 02.4   -27 10 13     2.628    2.638   79.6   21.9    92   11.8 
2026-10-03 00:00 UT   17 52 22.0   -27 11 19     2.643    2.639   78.9   21.8    92   11.8 
2026-10-04 00:00 UT   17 53 42.3   -27 12 23     2.657    2.641   78.2   21.8    91   11.8 
2026-10-05 00:00 UT   17 55 03.5   -27 13 24     2.672    2.643   77.5   21.7    91   11.8 
2026-10-06 00:00 UT   17 56 25.3   -27 14 21     2.686    2.644   76.8   21.6    91   11.8 
2026-10-07 00:00 UT   17 57 47.8   -27 15 15     2.701    2.646   76.2   21.5    91   11.9 
2026-10-08 00:00 UT   17 59 11.1   -27 16 06     2.715    2.648   75.5   21.4    91   11.9 
2026-10-09 00:00 UT   18 00 35.0   -27 16 54     2.729    2.649   74.8   21.3    91   11.9 

    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.