(14) Irene
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Opposition	14 Jun 2026	9.4	2.446 AU	1.431 AU	17h34m	-22°41'	178.7°	0.5°
Today	11 Aug 2026	11.0	2.547 AU	1.888 AU	17h05m	-25°26'	119.7°	20.2°

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
2026-08-11 00:00 UT   17 05 46.9   -25 26 38     1.888    2.547  119.7   20.2    94   11.0 
2026-08-11 11:08 UT   17 05 55.0   -25 27 47     1.894    2.548  119.3   20.3    94   11.0 
2026-08-12 00:00 UT   17 06 04.8   -25 29 06     1.901    2.549  118.8   20.4    94   11.0 
2026-08-13 00:00 UT   17 06 24.4   -25 31 33     1.914    2.551  118.0   20.5    94   11.0 
2026-08-14 00:00 UT   17 06 45.7   -25 33 59     1.927    2.553  117.1   20.7    94   11.0 
2026-08-15 00:00 UT   17 07 08.5   -25 36 25     1.940    2.554  116.2   20.8    94   11.0 
2026-08-16 00:00 UT   17 07 33.0   -25 38 50     1.953    2.556  115.4   21.0    94   11.1 
2026-08-17 00:00 UT   17 07 59.1   -25 41 15     1.966    2.558  114.5   21.1    94   11.1 
2026-08-18 00:00 UT   17 08 26.7   -25 43 40     1.980    2.560  113.6   21.2    94   11.1 
2026-08-19 00:00 UT   17 08 55.9   -25 46 04     1.993    2.561  112.8   21.4    94   11.1 
2026-08-20 00:00 UT   17 09 26.6   -25 48 27     2.007    2.563  111.9   21.5    94   11.1 
2026-08-21 00:00 UT   17 09 58.8   -25 50 50     2.021    2.565  111.1   21.6    94   11.2 
2026-08-22 00:00 UT   17 10 32.5   -25 53 12     2.034    2.567  110.3   21.7    94   11.2 
2026-08-23 00:00 UT   17 11 07.7   -25 55 33     2.048    2.568  109.4   21.8    94   11.2 
2026-08-24 00:00 UT   17 11 44.3   -25 57 54     2.062    2.570  108.6   21.9    94   11.2 
2026-08-25 00:00 UT   17 12 22.3   -26 00 13     2.076    2.572  107.8   22.0    94   11.2 
2026-08-26 00:00 UT   17 13 01.8   -26 02 32     2.090    2.574  107.0   22.1    94   11.3 
2026-08-27 00:00 UT   17 13 42.6   -26 04 50     2.104    2.575  106.2   22.1    94   11.3 
2026-08-28 00:00 UT   17 14 24.8   -26 07 07     2.118    2.577  105.4   22.2    94   11.3 
2026-08-29 00:00 UT   17 15 08.3   -26 09 23     2.132    2.579  104.6   22.3    94   11.3 
2026-08-30 00:00 UT   17 15 53.2   -26 11 39     2.146    2.581  103.8   22.3    94   11.3 
2026-08-31 00:00 UT   17 16 39.3   -26 13 52     2.161    2.582  103.0   22.4    94   11.3 
2026-09-01 00:00 UT   17 17 26.8   -26 16 05     2.175    2.584  102.2   22.4    94   11.4 
2026-09-02 00:00 UT   17 18 15.5   -26 18 17     2.189    2.586  101.4   22.5    93   11.4 
2026-09-03 00:00 UT   17 19 05.4   -26 20 27     2.204    2.588  100.7   22.5    93   11.4 
2026-09-04 00:00 UT   17 19 56.6   -26 22 36     2.218    2.589   99.9   22.6    93   11.4 
2026-09-05 00:00 UT   17 20 49.0   -26 24 44     2.233    2.591   99.1   22.6    93   11.4 
2026-09-06 00:00 UT   17 21 42.6   -26 26 51     2.247    2.593   98.3   22.6    93   11.4 
2026-09-07 00:00 UT   17 22 37.4   -26 28 55     2.262    2.595   97.6   22.6    93   11.5 
2026-09-08 00:00 UT   17 23 33.4   -26 30 59     2.276    2.596   96.8   22.7    93   11.5 
2026-09-09 00:00 UT   17 24 30.5   -26 33 01     2.291    2.598   96.1   22.7    93   11.5 
2026-09-10 00:00 UT   17 25 28.8   -26 35 01     2.305    2.600   95.3   22.7    93   11.5 

    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.