(14) Irene
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	17 Apr 2026	10.7	2.349 AU	1.729 AU	18h02m	-19°34'	116.0°	22.6°
Opposition	14 Jun 2026	9.4	2.446 AU	1.431 AU	17h34m	-22°41'	178.7°	0.5°

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)                : 0.1626702
            a (Semimajor axis)              : 2.5878733
            i (Inclination)                 : 9.12955
            Ω (Longitude of ascending node) : 86.00980
            ω (Argument of perihelion)      : 98.26522
            M (Mean anomaly)                : 12.92605
            Epoch                           : 2025 Nov 21

            L (Longitude of perihelion)     : 4.37957
            B (Latitude of perihelion)      : 9.03393
            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
2026-04-17 00:00 UT   18 02 27.3   -19 34 04     1.729    2.349  116.0   22.6   268   10.7 
2026-04-17 13:45 UT   18 02 40.0   -19 35 14     1.723    2.350  116.5   22.5   268   10.7 
2026-04-18 00:00 UT   18 02 49.1   -19 36 06     1.719    2.350  116.9   22.4   268   10.7 
2026-04-19 00:00 UT   18 03 09.1   -19 38 10     1.710    2.352  117.8   22.2   268   10.6 
2026-04-20 00:00 UT   18 03 27.3   -19 40 17     1.700    2.354  118.7   22.0   268   10.6 
2026-04-21 00:00 UT   18 03 43.7   -19 42 27     1.691    2.355  119.6   21.8   268   10.6 
2026-04-22 00:00 UT   18 03 58.2   -19 44 39     1.682    2.357  120.5   21.6   267   10.6 
2026-04-23 00:00 UT   18 04 10.8   -19 46 53     1.672    2.358  121.4   21.3   267   10.6 
2026-04-24 00:00 UT   18 04 21.5   -19 49 11     1.663    2.360  122.4   21.1   267   10.6 
2026-04-25 00:00 UT   18 04 30.4   -19 51 31     1.654    2.362  123.3   20.9   267   10.5 
2026-04-26 00:00 UT   18 04 37.4   -19 53 54     1.646    2.363  124.3   20.6   267   10.5 
2026-04-27 00:00 UT   18 04 42.5   -19 56 20     1.637    2.365  125.2   20.3   267   10.5 
2026-04-28 00:00 UT   18 04 45.6   -19 58 49     1.628    2.366  126.2   20.1   267   10.5 
2026-04-29 00:00 UT   18 04 46.9   -20 01 21     1.620    2.368  127.1   19.8   267   10.5 
2026-04-30 00:00 UT   18 04 46.2   -20 03 57     1.612    2.370  128.1   19.5   267   10.4 
2026-05-01 00:00 UT   18 04 43.6   -20 06 35     1.603    2.371  129.1   19.3   267   10.4 
2026-05-02 00:00 UT   18 04 39.1   -20 09 16     1.595    2.373  130.1   19.0   267   10.4 
2026-05-03 00:00 UT   18 04 32.7   -20 12 00     1.587    2.375  131.1   18.7   267   10.4 
2026-05-04 00:00 UT   18 04 24.3   -20 14 48     1.580    2.376  132.1   18.4   267   10.4 
2026-05-05 00:00 UT   18 04 13.9   -20 17 38     1.572    2.378  133.1   18.0   267   10.3 
2026-05-06 00:00 UT   18 04 01.7   -20 20 32     1.565    2.379  134.1   17.7   267   10.3 
2026-05-07 00:00 UT   18 03 47.4   -20 23 29     1.557    2.381  135.1   17.4   267   10.3 
2026-05-08 00:00 UT   18 03 31.3   -20 26 28     1.550    2.383  136.2   17.1   267   10.3 
2026-05-09 00:00 UT   18 03 13.2   -20 29 31     1.543    2.384  137.2   16.7   267   10.3 
2026-05-10 00:00 UT   18 02 53.2   -20 32 37     1.536    2.386  138.2   16.4   266   10.3 
2026-05-11 00:00 UT   18 02 31.3   -20 35 46     1.530    2.388  139.3   16.0   266   10.2 
2026-05-12 00:00 UT   18 02 07.5   -20 38 57     1.523    2.389  140.4   15.6   266   10.2 
2026-05-13 00:00 UT   18 01 41.7   -20 42 12     1.517    2.391  141.4   15.3   266   10.2 
2026-05-14 00:00 UT   18 01 14.1   -20 45 29     1.511    2.393  142.5   14.9   266   10.2 
2026-05-15 00:00 UT   18 00 44.7   -20 48 49     1.505    2.394  143.6   14.5   266   10.1 
2026-05-16 00:00 UT   18 00 13.4   -20 52 12     1.499    2.396  144.7   14.1   266   10.1 
2026-05-17 00:00 UT   17 59 40.4   -20 55 37     1.493    2.398  145.8   13.7   266   10.1 

    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.