(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	20 Jun 2026	9.5	2.456 AU	1.443 AU	17h29m	-23°00'	174.5°	2.3°

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)      : 98.30620
            M (Mean anomaly)                : 60.22804
            Epoch                           : 2026 Jun 09

            L (Longitude of perihelion)     : 4.42197
            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
2026-06-20 00:00 UT   17 29 04.4   -23 00 48     1.443    2.456  174.5    2.3    95    9.5 
2026-06-20 10:51 UT   17 28 36.8   -23 02 22     1.444    2.457  174.0    2.5    95    9.6 
2026-06-21 00:00 UT   17 28 03.4   -23 04 15     1.446    2.458  173.4    2.7    95    9.6 
2026-06-22 00:00 UT   17 27 03.0   -23 07 41     1.449    2.459  172.2    3.2    94    9.6 
2026-06-23 00:00 UT   17 26 03.2   -23 11 04     1.452    2.461  171.0    3.7    93    9.7 
2026-06-24 00:00 UT   17 25 04.1   -23 14 26     1.456    2.463  169.8    4.2    93    9.7 
2026-06-25 00:00 UT   17 24 05.8   -23 17 45     1.460    2.465  168.6    4.7    93    9.7 
2026-06-26 00:00 UT   17 23 08.3   -23 21 02     1.464    2.466  167.5    5.1    93    9.8 
2026-06-27 00:00 UT   17 22 11.7   -23 24 18     1.469    2.468  166.3    5.6    93    9.8 
2026-06-28 00:00 UT   17 21 16.0   -23 27 31     1.474    2.470  165.1    6.1    93    9.8 
2026-06-29 00:00 UT   17 20 21.4   -23 30 42     1.479    2.472  164.0    6.5    93    9.8 
2026-06-30 00:00 UT   17 19 27.8   -23 33 51     1.484    2.473  162.8    7.0    93    9.9 
2026-07-01 00:00 UT   17 18 35.4   -23 36 58     1.489    2.475  161.7    7.4    93    9.9 
2026-07-02 00:00 UT   17 17 44.1   -23 40 03     1.495    2.477  160.5    7.9    93    9.9 
2026-07-03 00:00 UT   17 16 54.1   -23 43 06     1.501    2.479  159.4    8.3    93   10.0 
2026-07-04 00:00 UT   17 16 05.4   -23 46 07     1.507    2.480  158.3    8.7    93   10.0 
2026-07-05 00:00 UT   17 15 18.0   -23 49 06     1.514    2.482  157.1    9.2    93   10.0 
2026-07-06 00:00 UT   17 14 32.0   -23 52 04     1.521    2.484  156.0    9.6    93   10.1 
2026-07-07 00:00 UT   17 13 47.4   -23 54 59     1.527    2.486  154.9   10.0    93   10.1 
2026-07-08 00:00 UT   17 13 04.3   -23 57 53     1.535    2.487  153.8   10.4    93   10.1 
2026-07-09 00:00 UT   17 12 22.7   -24 00 46     1.542    2.489  152.7   10.8    93   10.1 
2026-07-10 00:00 UT   17 11 42.7   -24 03 37     1.550    2.491  151.6   11.2    93   10.2 
2026-07-11 00:00 UT   17 11 04.2   -24 06 26     1.557    2.493  150.5   11.6    93   10.2 
2026-07-12 00:00 UT   17 10 27.4   -24 09 14     1.565    2.495  149.4   12.0    93   10.2 
2026-07-13 00:00 UT   17 09 52.2   -24 12 00     1.574    2.496  148.3   12.4    93   10.2 
2026-07-14 00:00 UT   17 09 18.7   -24 14 46     1.582    2.498  147.2   12.7    93   10.3 
2026-07-15 00:00 UT   17 08 46.9   -24 17 30     1.591    2.500  146.1   13.1    93   10.3 
2026-07-16 00:00 UT   17 08 16.9   -24 20 13     1.600    2.502  145.1   13.5    93   10.3 
2026-07-17 00:00 UT   17 07 48.6   -24 22 54     1.609    2.503  144.0   13.8    93   10.4 
2026-07-18 00:00 UT   17 07 22.1   -24 25 35     1.618    2.505  143.0   14.1    93   10.4 
2026-07-19 00:00 UT   17 06 57.4   -24 28 15     1.627    2.507  141.9   14.5    93   10.4 
2026-07-20 00:00 UT   17 06 34.4   -24 30 54     1.637    2.509  140.9   14.8    93   10.4 

    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.