(14) Irene
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	17 Jun 2025	11.5	2.219 AU	2.804 AU	09h02m	+23°40'	45.8°	19.2°
Opposition	14 Jun 2026	9.4	2.447 AU	1.431 AU	17h34m	-22°40'	178.8°	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)                : 0.1627056
            a (Semimajor axis)              : 2.5880494
            i (Inclination)                 : 9.12960
            Ω (Longitude of ascending node) : 86.01070
            ω (Argument of perihelion)      : 98.22480
            M (Mean anomaly)                : 325.60832
            Epoch                           : 2025 May 05

            L (Longitude of perihelion)     : 4.33956
            B (Latitude of perihelion)      : 9.03491
            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. A more printer-friendly version of the same chart can be found below.

Ephemerides:

Date       Time       RA (2000)    DEC (2000)    delta   radius  elong  phase   PA    magn
2025-06-17 00:00 UT   09 02 15.8   +23 40 51     2.804    2.219   45.8   19.2   100   11.5 
2025-06-17 04:52 UT   09 02 39.8   +23 39 11     2.805    2.218   45.7   19.1   100   11.5 
2025-06-18 00:00 UT   09 04 14.0   +23 32 36     2.811    2.218   45.3   19.0   100   11.5 
2025-06-19 00:00 UT   09 06 12.3   +23 24 15     2.818    2.217   44.9   18.9   100   11.5 
2025-06-20 00:00 UT   09 08 10.7   +23 15 49     2.825    2.216   44.4   18.7   100   11.5 
2025-06-21 00:00 UT   09 10 09.3   +23 07 17     2.832    2.215   43.9   18.6   100   11.5 
2025-06-22 00:00 UT   09 12 07.9   +22 58 40     2.839    2.214   43.4   18.4   100   11.5 
2025-06-23 00:00 UT   09 14 06.7   +22 49 58     2.845    2.213   43.0   18.2   100   11.5 
2025-06-24 00:00 UT   09 16 05.6   +22 41 10     2.852    2.212   42.5   18.1   100   11.5 
2025-06-25 00:00 UT   09 18 04.6   +22 32 16     2.858    2.211   42.1   17.9   100   11.5 
2025-06-26 00:00 UT   09 20 03.7   +22 23 18     2.865    2.210   41.6   17.8   100   11.5 
2025-06-27 00:00 UT   09 22 02.8   +22 14 14     2.871    2.209   41.1   17.6   100   11.5 
2025-06-28 00:00 UT   09 24 02.1   +22 05 05     2.878    2.208   40.7   17.5   101   11.5 
2025-06-29 00:00 UT   09 26 01.4   +21 55 50     2.884    2.208   40.2   17.3   101   11.5 
2025-06-30 00:00 UT   09 28 00.7   +21 46 31     2.890    2.207   39.8   17.1   101   11.5 
2025-07-01 00:00 UT   09 30 00.2   +21 37 06     2.896    2.206   39.3   17.0   101   11.5 
2025-07-02 00:00 UT   09 31 59.7   +21 27 37     2.903    2.205   38.8   16.8   101   11.5 
2025-07-03 00:00 UT   09 33 59.2   +21 18 02     2.909    2.204   38.4   16.6   101   11.5 
2025-07-04 00:00 UT   09 35 58.8   +21 08 22     2.915    2.203   37.9   16.5   101   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.