(14) Irene
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	22 Dec 2024	9.9	2.480 AU	1.519 AU	07h10m	+26°02'	164.1°	6.2°
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
2024-12-22 00:00 UT   07 10 22.1   +26 02 16     1.519    2.480  164.1    6.2   264    9.9 
2024-12-22 18:20 UT   07 09 38.8   +26 06 50     1.515    2.479  165.0    5.9   263    9.9 
2024-12-23 00:00 UT   07 09 25.3   +26 08 15     1.514    2.478  165.3    5.8   263    9.9 
2024-12-24 00:00 UT   07 08 27.4   +26 14 14     1.509    2.476  166.5    5.3   261    9.8 
2024-12-25 00:00 UT   07 07 28.3   +26 20 11     1.505    2.475  167.6    4.9   259    9.8 
2024-12-26 00:00 UT   07 06 28.1   +26 26 08     1.501    2.473  168.8    4.4   257    9.8 
2024-12-27 00:00 UT   07 05 26.9   +26 32 04     1.497    2.471  169.9    4.0   254    9.7 
2024-12-28 00:00 UT   07 04 24.8   +26 37 57     1.493    2.469  171.1    3.5   250    9.7 
2024-12-29 00:00 UT   07 03 21.9   +26 43 49     1.490    2.468  172.1    3.1   245    9.7 
2024-12-30 00:00 UT   07 02 18.2   +26 49 38     1.487    2.466  173.1    2.7   239    9.6 
2024-12-31 00:00 UT   07 01 13.8   +26 55 24     1.484    2.464  174.1    2.4   231    9.6 
2025-01-01 00:00 UT   07 00 08.8   +27 01 07     1.482    2.462  174.8    2.1   220    9.6 
2025-01-02 00:00 UT   06 59 03.4   +27 06 46     1.479    2.461  175.3    1.9   207    9.6 
2025-01-03 00:00 UT   06 57 57.5   +27 12 22     1.477    2.459  175.6    1.8   191    9.6 
2025-01-04 00:00 UT   06 56 51.4   +27 17 53     1.476    2.457  175.4    1.8   174    9.6 
2025-01-05 00:00 UT   06 55 45.1   +27 23 20     1.474    2.455  175.0    2.0   160    9.6 
2025-01-06 00:00 UT   06 54 38.6   +27 28 42     1.473    2.454  174.3    2.3   149    9.6 
2025-01-07 00:00 UT   06 53 32.1   +27 33 59     1.473    2.452  173.4    2.7   140    9.6 
2025-01-08 00:00 UT   06 52 25.7   +27 39 11     1.472    2.450  172.4    3.1   134    9.6 
2025-01-09 00:00 UT   06 51 19.5   +27 44 17     1.472    2.448  171.3    3.5   128    9.7 
2025-01-10 00:00 UT   06 50 13.6   +27 49 18     1.472    2.447  170.2    3.9   125    9.7 
2025-01-11 00:00 UT   06 49 08.0   +27 54 12     1.472    2.445  169.1    4.4   121    9.7 
2025-01-12 00:00 UT   06 48 02.8   +27 59 01     1.473    2.443  167.9    4.8   119    9.7 
2025-01-13 00:00 UT   06 46 58.2   +28 03 43     1.474    2.442  166.7    5.3   117    9.8 
2025-01-14 00:00 UT   06 45 54.2   +28 08 19     1.475    2.440  165.5    5.8   115    9.8 
2025-01-15 00:00 UT   06 44 50.9   +28 12 48     1.477    2.438  164.3    6.3   113    9.8 
2025-01-16 00:00 UT   06 43 48.4   +28 17 11     1.478    2.436  163.1    6.7   112    9.8 
2025-01-17 00:00 UT   06 42 46.8   +28 21 27     1.480    2.435  161.9    7.2   111    9.9 
2025-01-18 00:00 UT   06 41 46.1   +28 25 36     1.483    2.433  160.7    7.7   110    9.9 
2025-01-19 00:00 UT   06 40 46.5   +28 29 39     1.485    2.431  159.5    8.2   109    9.9 
2025-01-20 00:00 UT   06 39 48.0   +28 33 34     1.488    2.429  158.3    8.6   108    9.9 
2025-01-21 00:00 UT   06 38 50.7   +28 37 23     1.491    2.428  157.1    9.1   107    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.