(43) Ariadne
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	16 Sep 2025	12.7	2.437 AU	2.194 AU	05h22m	+24°57'	91.5°	24.4°
Opposition	8 Dec 2025	11.0	2.529 AU	1.544 AU	05h02m	+23°35'	179.0°	0.4°

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 Ariadne are:

            e (Eccentricity)                : 0.1683732
            a (Semimajor axis)              : 2.2028662
            i (Inclination)                 : 3.47074
            Ω (Longitude of ascending node) : 264.74589
            ω (Argument of perihelion)      : 16.10999
            M (Mean anomaly)                : 81.24122
            Epoch                           : 2025 May 05

            L (Longitude of perihelion)     : 280.82786
            B (Latitude of perihelion)      : 0.96252
            P (Orbital period in years)     : 3.27            
        

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
2025-09-16 00:00 UT   05 22 37.9   +24 57 08     2.194    2.437   91.5   24.4   266   12.7 
2025-09-16 01:56 UT   05 22 42.4   +24 57 11     2.193    2.437   91.6   24.4   266   12.7 
2025-09-17 00:00 UT   05 23 33.3   +24 57 42     2.182    2.438   92.3   24.3   266   12.7 
2025-09-18 00:00 UT   05 24 27.4   +24 58 13     2.170    2.440   93.0   24.3   266   12.7 
2025-09-19 00:00 UT   05 25 20.1   +24 58 41     2.159    2.441   93.8   24.2   266   12.7 
2025-09-20 00:00 UT   05 26 11.5   +24 59 07     2.147    2.442   94.6   24.2   267   12.7 
2025-09-21 00:00 UT   05 27 01.5   +24 59 31     2.136    2.444   95.4   24.1   267   12.7 
2025-09-22 00:00 UT   05 27 50.2   +24 59 52     2.124    2.445   96.2   24.1   267   12.6 
2025-09-23 00:00 UT   05 28 37.4   +25 00 11     2.112    2.446   97.0   24.0   267   12.6 
2025-09-24 00:00 UT   05 29 23.2   +25 00 28     2.101    2.448   97.8   24.0   267   12.6 
2025-09-25 00:00 UT   05 30 07.5   +25 00 42     2.089    2.449   98.6   23.9   267   12.6 
2025-09-26 00:00 UT   05 30 50.3   +25 00 55     2.078    2.450   99.4   23.8   267   12.6 
2025-09-27 00:00 UT   05 31 31.6   +25 01 05     2.066    2.452  100.2   23.7   267   12.6 
2025-09-28 00:00 UT   05 32 11.4   +25 01 13     2.055    2.453  101.1   23.6   267   12.6 
2025-09-29 00:00 UT   05 32 49.6   +25 01 19     2.043    2.454  101.9   23.5   267   12.6 
2025-09-30 00:00 UT   05 33 26.2   +25 01 23     2.032    2.455  102.8   23.4   267   12.5 
2025-10-01 00:00 UT   05 34 01.3   +25 01 26     2.020    2.457  103.6   23.3   267   12.5 
2025-10-02 00:00 UT   05 34 34.7   +25 01 26     2.009    2.458  104.5   23.2   267   12.5 
2025-10-03 00:00 UT   05 35 06.6   +25 01 25     1.998    2.459  105.3   23.1   267   12.5 
2025-10-04 00:00 UT   05 35 36.7   +25 01 21     1.986    2.461  106.2   23.0   267   12.5 
2025-10-05 00:00 UT   05 36 05.2   +25 01 16     1.975    2.462  107.1   22.9   267   12.5 
2025-10-06 00:00 UT   05 36 32.0   +25 01 09     1.964    2.463  108.0   22.7   267   12.4 
2025-10-07 00:00 UT   05 36 57.0   +25 01 01     1.953    2.464  108.8   22.6   267   12.4 
2025-10-08 00:00 UT   05 37 20.3   +25 00 50     1.942    2.466  109.7   22.4   267   12.4 
2025-10-09 00:00 UT   05 37 41.9   +25 00 38     1.930    2.467  110.6   22.3   267   12.4 
2025-10-10 00:00 UT   05 38 01.6   +25 00 24     1.920    2.468  111.6   22.1   267   12.4 
2025-10-11 00:00 UT   05 38 19.6   +25 00 09     1.909    2.469  112.5   21.9   267   12.4 
2025-10-12 00:00 UT   05 38 35.7   +24 59 52     1.898    2.470  113.4   21.8   267   12.4 
2025-10-13 00:00 UT   05 38 50.0   +24 59 33     1.887    2.472  114.3   21.6   267   12.3 
2025-10-14 00:00 UT   05 39 02.3   +24 59 13     1.876    2.473  115.3   21.4   267   12.3 
2025-10-15 00:00 UT   05 39 12.8   +24 58 50     1.866    2.474  116.2   21.2   267   12.3 
2025-10-16 00:00 UT   05 39 21.3   +24 58 26     1.855    2.475  117.2   21.0   267   12.3 

    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.