(14) Irene
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	21 Nov 2024	10.7	2.535 AU	1.792 AU	07h25m	+23°21'	129.1°	17.6°
Opposition	2 Jan 2025	9.6	2.460 AU	1.478 AU	06h58m	+27°09'	175.5°	1.8°

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
2024-11-21 00:00 UT   07 25 58.8   +23 21 35     1.792    2.535  129.1   17.6   277   10.7 
2024-11-21 12:52 UT   07 25 57.8   +23 23 39     1.786    2.534  129.7   17.5   277   10.7 
2024-11-22 00:00 UT   07 25 56.4   +23 25 28     1.781    2.533  130.2   17.3   277   10.7 
2024-11-23 00:00 UT   07 25 52.2   +23 29 28     1.769    2.531  131.2   17.1   277   10.7 
2024-11-24 00:00 UT   07 25 46.2   +23 33 34     1.758    2.529  132.2   16.8   277   10.7 
2024-11-25 00:00 UT   07 25 38.2   +23 37 46     1.746    2.528  133.3   16.5   277   10.6 
2024-11-26 00:00 UT   07 25 28.3   +23 42 04     1.735    2.526  134.4   16.2   277   10.6 
2024-11-27 00:00 UT   07 25 16.5   +23 46 28     1.724    2.524  135.4   15.9   277   10.6 
2024-11-28 00:00 UT   07 25 02.7   +23 50 59     1.714    2.522  136.5   15.6   276   10.6 
2024-11-29 00:00 UT   07 24 47.1   +23 55 35     1.703    2.520  137.6   15.3   276   10.5 
2024-11-30 00:00 UT   07 24 29.5   +24 00 17     1.693    2.519  138.7   15.0   276   10.5 
2024-12-01 00:00 UT   07 24 09.9   +24 05 05     1.682    2.517  139.7   14.7   276   10.5 
2024-12-02 00:00 UT   07 23 48.5   +24 09 59     1.672    2.515  140.8   14.3   276   10.5 
2024-12-03 00:00 UT   07 23 25.1   +24 14 58     1.663    2.513  142.0   14.0   275   10.4 
2024-12-04 00:00 UT   07 22 59.8   +24 20 02     1.653    2.512  143.1   13.6   275   10.4 
2024-12-05 00:00 UT   07 22 32.6   +24 25 12     1.644    2.510  144.2   13.3   275   10.4 
2024-12-06 00:00 UT   07 22 03.5   +24 30 27     1.634    2.508  145.3   12.9   275   10.4 
2024-12-07 00:00 UT   07 21 32.6   +24 35 46     1.625    2.506  146.5   12.5   274   10.3 
2024-12-08 00:00 UT   07 20 59.8   +24 41 10     1.617    2.505  147.6   12.2   274   10.3 
2024-12-09 00:00 UT   07 20 25.2   +24 46 38     1.608    2.503  148.8   11.8   274   10.3 
2024-12-10 00:00 UT   07 19 48.7   +24 52 11     1.600    2.501  149.9   11.4   273   10.3 
2024-12-11 00:00 UT   07 19 10.5   +24 57 47     1.592    2.499  151.1   11.0   273   10.2 
2024-12-12 00:00 UT   07 18 30.5   +25 03 27     1.584    2.498  152.2   10.6   272   10.2 
2024-12-13 00:00 UT   07 17 48.8   +25 09 10     1.576    2.496  153.4   10.2   272   10.2 
2024-12-14 00:00 UT   07 17 05.4   +25 14 56     1.569    2.494  154.6    9.8   271   10.1 
2024-12-15 00:00 UT   07 16 20.4   +25 20 45     1.562    2.492  155.8    9.3   271   10.1 
2024-12-16 00:00 UT   07 15 33.7   +25 26 36     1.555    2.491  156.9    8.9   270   10.1 
2024-12-17 00:00 UT   07 14 45.5   +25 32 30     1.548    2.489  158.1    8.5   269   10.1 
2024-12-18 00:00 UT   07 13 55.7   +25 38 25     1.542    2.487  159.3    8.0   269   10.0 
2024-12-19 00:00 UT   07 13 04.4   +25 44 21     1.536    2.485  160.5    7.6   268   10.0 
2024-12-20 00:00 UT   07 12 11.7   +25 50 19     1.530    2.483  161.7    7.1   267   10.0 
2024-12-21 00:00 UT   07 11 17.5   +25 56 17     1.525    2.482  162.9    6.7   266    9.9 

    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.