(194) Prokne
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	14 May 2026	14.0	3.200 AU	3.594 AU	07h28m	+12°58'	59.4°	15.8°
Opposition	12 Mar 2027	12.2	3.115 AU	2.125 AU	11h37m	+08°51'	174.1°	1.9°

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) : 159.19114
            ω (Argument of perihelion)      : 163.47251
            M (Mean anomaly)                : 114.13733
            Epoch                           : 2025 Nov 21

            L (Longitude of perihelion)     : 143.47549
            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
2026-05-14 00:00 UT   07 28 39.4   +12 58 20     3.594    3.200   59.4   15.8   104   14.0 
2026-05-14 14:54 UT   07 29 21.3   +12 59 16     3.602    3.200   59.0   15.7   104   14.0 
2026-05-15 00:00 UT   07 29 47.0   +12 59 49     3.607    3.200   58.7   15.7   104   14.0 
2026-05-16 00:00 UT   07 30 55.0   +13 01 12     3.620    3.201   58.0   15.5   104   14.0 
2026-05-17 00:00 UT   07 32 03.4   +13 02 31     3.632    3.202   57.3   15.4   105   14.0 
2026-05-18 00:00 UT   07 33 12.3   +13 03 44     3.645    3.202   56.6   15.3   105   14.0 
2026-05-19 00:00 UT   07 34 21.5   +13 04 53     3.658    3.203   56.0   15.2   105   14.0 
2026-05-20 00:00 UT   07 35 31.2   +13 05 56     3.670    3.204   55.3   15.0   105   14.0 
2026-05-21 00:00 UT   07 36 41.3   +13 06 55     3.683    3.204   54.6   14.9   105   14.0 
2026-05-22 00:00 UT   07 37 51.7   +13 07 48     3.695    3.205   53.9   14.8   106   14.0 
2026-05-23 00:00 UT   07 39 02.5   +13 08 37     3.707    3.206   53.2   14.7   106   14.0 
2026-05-24 00:00 UT   07 40 13.7   +13 09 20     3.719    3.206   52.6   14.5   106   14.0 
2026-05-25 00:00 UT   07 41 25.2   +13 09 59     3.731    3.207   51.9   14.4   106   14.0 
2026-05-26 00:00 UT   07 42 37.1   +13 10 33     3.743    3.208   51.2   14.3   107   14.0 
2026-05-27 00:00 UT   07 43 49.3   +13 11 02     3.755    3.208   50.6   14.1   107   14.0 
2026-05-28 00:00 UT   07 45 01.8   +13 11 26     3.767    3.209   49.9   14.0   107   14.0 
2026-05-29 00:00 UT   07 46 14.7   +13 11 45     3.778    3.210   49.2   13.8   107   14.0 
2026-05-30 00:00 UT   07 47 27.8   +13 11 59     3.789    3.210   48.6   13.7   107   14.0 
2026-05-31 00:00 UT   07 48 41.3   +13 12 09     3.801    3.211   47.9   13.6   108   14.0 
2026-06-01 00:00 UT   07 49 55.0   +13 12 14     3.812    3.212   47.3   13.4   108   14.0 
2026-06-02 00:00 UT   07 51 09.0   +13 12 14     3.823    3.212   46.6   13.3   108   14.0 
2026-06-03 00:00 UT   07 52 23.4   +13 12 10     3.834    3.213   46.0   13.1   108   14.0 
2026-06-04 00:00 UT   07 53 37.9   +13 12 01     3.845    3.213   45.3   13.0   109   14.0 
2026-06-05 00:00 UT   07 54 52.8   +13 11 47     3.856    3.214   44.7   12.8   109   14.0 
2026-06-06 00:00 UT   07 56 07.9   +13 11 29     3.866    3.214   44.0   12.7   109   14.0 
2026-06-07 00:00 UT   07 57 23.3   +13 11 06     3.877    3.215   43.4   12.5   109   14.0 
2026-06-08 00:00 UT   07 58 38.9   +13 10 38     3.887    3.216   42.7   12.4   109   14.0 
2026-06-09 00:00 UT   07 59 54.8   +13 10 06     3.897    3.216   42.1   12.2   110   14.0 
2026-06-10 00:00 UT   08 01 10.9   +13 09 29     3.907    3.217   41.4   12.0   110   14.0 
2026-06-11 00:00 UT   08 02 27.3   +13 08 48     3.917    3.217   40.8   11.9   110   14.0 

    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.