(194) Prokne
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	17 Oct 2025	13.4	2.910 AU	2.746 AU	07h32m	+03°28'	89.3°	20.0°
Opposition	8 Jan 2026	12.4	3.058 AU	2.120 AU	07h07m	+01°03'	158.7°	6.7°

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 Prokne are:

            e (Eccentricity)                : 0.2371862
            a (Semimajor axis)              : 2.6182164
            i (Inclination)                 : 18.51167
            Ω (Longitude of ascending node) : 159.19113
            ω (Argument of perihelion)      : 163.47251
            M (Mean anomaly)                : 114.13733
            Epoch                           : 2025 Nov 21

            L (Longitude of perihelion)     : 143.47548
            B (Latitude of perihelion)      : 5.18203
            P (Orbital period in years)     : 4.24            
        

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.

Ephemerides:

Date       Time       RA (2000)    DEC (2000)    delta   radius  elong  phase   PA    magn
2025-10-17 00:00 UT   07 32 05.3   +03 28 25     2.746    2.910   89.3   20.0   279   13.4 
2025-10-17 11:15 UT   07 32 21.9   +03 25 52     2.740    2.911   89.7   20.0   279   13.3 
2025-10-18 00:00 UT   07 32 40.4   +03 22 58     2.734    2.912   90.1   20.0   280   13.3 
2025-10-19 00:00 UT   07 33 14.4   +03 17 32     2.723    2.914   90.9   20.0   280   13.3 
2025-10-20 00:00 UT   07 33 47.2   +03 12 07     2.711    2.916   91.7   20.0   280   13.3 
2025-10-21 00:00 UT   07 34 18.9   +03 06 42     2.700    2.918   92.5   19.9   280   13.3 
2025-10-22 00:00 UT   07 34 49.4   +03 01 19     2.688    2.920   93.3   19.9   281   13.3 
2025-10-23 00:00 UT   07 35 18.6   +02 55 58     2.677    2.922   94.1   19.9   281   13.3 
2025-10-24 00:00 UT   07 35 46.7   +02 50 37     2.665    2.924   94.9   19.8   281   13.3 
2025-10-25 00:00 UT   07 36 13.5   +02 45 19     2.654    2.926   95.7   19.8   282   13.3 
2025-10-26 00:00 UT   07 36 39.2   +02 40 02     2.643    2.928   96.5   19.7   282   13.3 
2025-10-27 00:00 UT   07 37 03.5   +02 34 47     2.631    2.929   97.4   19.7   282   13.3 
2025-10-28 00:00 UT   07 37 26.6   +02 29 35     2.620    2.931   98.2   19.6   283   13.3 
2025-10-29 00:00 UT   07 37 48.4   +02 24 25     2.608    2.933   99.0   19.5   283   13.2 
2025-10-30 00:00 UT   07 38 09.0   +02 19 17     2.597    2.935   99.9   19.5   283   13.2 
2025-10-31 00:00 UT   07 38 28.3   +02 14 11     2.586    2.937  100.7   19.4   284   13.2 
2025-11-01 00:00 UT   07 38 46.2   +02 09 09     2.574    2.939  101.6   19.3   284   13.2 
2025-11-02 00:00 UT   07 39 02.9   +02 04 09     2.563    2.941  102.4   19.2   285   13.2 
2025-11-03 00:00 UT   07 39 18.2   +01 59 13     2.552    2.943  103.3   19.2   285   13.2 
2025-11-04 00:00 UT   07 39 32.2   +01 54 20     2.541    2.945  104.2   19.1   285   13.2 
2025-11-05 00:00 UT   07 39 44.9   +01 49 30     2.530    2.947  105.0   19.0   286   13.2 
2025-11-06 00:00 UT   07 39 56.2   +01 44 44     2.519    2.949  105.9   18.9   286   13.2 
2025-11-07 00:00 UT   07 40 06.1   +01 40 01     2.508    2.951  106.8   18.8   286   13.1 
2025-11-08 00:00 UT   07 40 14.7   +01 35 23     2.497    2.952  107.7   18.7   287   13.1 
2025-11-09 00:00 UT   07 40 21.9   +01 30 48     2.486    2.954  108.5   18.5   287   13.1 
2025-11-10 00:00 UT   07 40 27.7   +01 26 18     2.475    2.956  109.4   18.4   288   13.1 
2025-11-11 00:00 UT   07 40 32.1   +01 21 53     2.465    2.958  110.3   18.3   288   13.1 
2025-11-12 00:00 UT   07 40 35.0   +01 17 32     2.454    2.960  111.2   18.2   288   13.1 
2025-11-13 00:00 UT   07 40 36.6   +01 13 16     2.443    2.962  112.1   18.0   289   13.1 
2025-11-14 00:00 UT   07 40 36.7   +01 09 05     2.433    2.964  113.1   17.9   289   13.1 
2025-11-15 00:00 UT   07 40 35.4   +01 04 59     2.422    2.966  114.0   17.7   290   13.0 
2025-11-16 00:00 UT   07 40 32.6   +01 00 59     2.412    2.967  114.9   17.6   290   13.0 

    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.