(14) Irene
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Opposition	2 Jan 2025	9.6	2.460 AU	1.478 AU	06h58m	+27°09'	175.5°	1.8°
Today	22 Jan 2025	10.0	2.426 AU	1.494 AU	06h37m	+28°41'	155.9°	9.5°

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)                : 0.1630221
            a (Semimajor axis)              : 2.5896652
            i (Inclination)                 : 9.12907
            Ω (Longitude of ascending node) : 86.01014
            ω (Argument of perihelion)      : 98.05015
            M (Mean anomaly)                : 278.47409
            Epoch                           : 2024 Oct 17

            L (Longitude of perihelion)     : 4.16219
            B (Latitude of perihelion)      : 9.03835
            P (Orbital period in years)     : 4.17            
        

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
2025-01-22 00:00 UT   06 37 54.7   +28 41 05     1.494    2.426  155.9    9.5   106   10.0 
2025-01-22 05:01 UT   06 37 43.1   +28 41 50     1.495    2.426  155.6    9.6   106   10.0 
2025-01-23 00:00 UT   06 36 60.0   +28 44 40     1.498    2.424  154.7   10.0   106   10.0 
2025-01-24 00:00 UT   06 36 06.7   +28 48 08     1.502    2.423  153.5   10.4   105   10.0 
2025-01-25 00:00 UT   06 35 14.9   +28 51 29     1.506    2.421  152.3   10.9   104   10.0 
2025-01-26 00:00 UT   06 34 24.7   +28 54 43     1.510    2.419  151.1   11.3   104   10.1 
2025-01-27 00:00 UT   06 33 36.1   +28 57 51     1.514    2.417  149.9   11.8   103   10.1 
2025-01-28 00:00 UT   06 32 49.2   +29 00 52     1.519    2.416  148.8   12.2   103   10.1 
2025-01-29 00:00 UT   06 32 04.0   +29 03 46     1.524    2.414  147.6   12.6   102   10.1 
2025-01-30 00:00 UT   06 31 20.7   +29 06 34     1.529    2.412  146.4   13.1   102   10.1 
2025-01-31 00:00 UT   06 30 39.1   +29 09 16     1.535    2.411  145.3   13.5   102   10.2 
2025-02-01 00:00 UT   06 29 59.5   +29 11 51     1.540    2.409  144.1   13.9   101   10.2 
2025-02-02 00:00 UT   06 29 21.8   +29 14 20     1.546    2.407  143.0   14.3   101   10.2 
2025-02-03 00:00 UT   06 28 46.1   +29 16 43     1.552    2.406  141.8   14.7   101   10.2 
2025-02-04 00:00 UT   06 28 12.4   +29 18 60     1.558    2.404  140.7   15.0   100   10.2 
2025-02-05 00:00 UT   06 27 40.8   +29 21 11     1.565    2.402  139.6   15.4   100   10.3 
2025-02-06 00:00 UT   06 27 11.2   +29 23 16     1.571    2.401  138.5   15.8   100   10.3 
2025-02-07 00:00 UT   06 26 43.7   +29 25 16     1.578    2.399  137.4   16.2    99   10.3 
2025-02-08 00:00 UT   06 26 18.4   +29 27 10     1.585    2.397  136.3   16.5    99   10.3 
2025-02-09 00:00 UT   06 25 55.1   +29 28 60     1.592    2.396  135.2   16.9    99   10.3 
2025-02-10 00:00 UT   06 25 34.0   +29 30 44     1.600    2.394  134.1   17.2    99   10.4 
2025-02-11 00:00 UT   06 25 15.1   +29 32 23     1.607    2.392  133.0   17.5    98   10.4 
2025-02-12 00:00 UT   06 24 58.3   +29 33 57     1.615    2.391  132.0   17.9    98   10.4 
2025-02-13 00:00 UT   06 24 43.7   +29 35 26     1.623    2.389  130.9   18.2    98   10.4 
2025-02-14 00:00 UT   06 24 31.2   +29 36 51     1.631    2.387  129.9   18.5    98   10.4 
2025-02-15 00:00 UT   06 24 20.9   +29 38 11     1.639    2.386  128.8   18.8    98   10.5 
2025-02-16 00:00 UT   06 24 12.8   +29 39 26     1.647    2.384  127.8   19.1    97   10.5 
2025-02-17 00:00 UT   06 24 06.9   +29 40 38     1.655    2.382  126.8   19.4    97   10.5 
2025-02-18 00:00 UT   06 24 03.1   +29 41 45     1.664    2.381  125.8   19.7    97   10.5 
2025-02-19 00:00 UT   06 24 01.6   +29 42 48     1.672    2.379  124.8   20.0    97   10.5 
2025-02-20 00:00 UT   06 24 02.1   +29 43 47     1.681    2.377  123.8   20.2    97   10.6 
2025-02-21 00:00 UT   06 24 04.9   +29 44 42     1.690    2.376  122.8   20.5    97   10.6 

    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.