(185) Eunike
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	11 Aug 2025	11.1	2.472 AU	1.514 AU	22h55m	-06°16'	155.4°	9.8°
Opposition	31 Aug 2025	10.6	2.454 AU	1.445 AU	22h43m	-11°27'	176.9°	1.3°

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 Eunike are:

            e (Eccentricity)                : 0.1270007
            a (Semimajor axis)              : 2.7389752
            i (Inclination)                 : 23.25091
            Ω (Longitude of ascending node) : 153.73586
            ω (Argument of perihelion)      : 223.97726
            M (Mean anomaly)                : 303.49376
            Epoch                           : 2025 May 05

            L (Longitude of perihelion)     : 195.29464
            B (Latitude of perihelion)      : -15.90896
            P (Orbital period in years)     : 4.53            
        

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
2025-08-11 00:00 UT   22 55 48.1   -06 16 24     1.514    2.472  155.4    9.8   246   11.1 
2025-08-11 01:34 UT   22 55 46.3   -06 17 18     1.514    2.472  155.5    9.8   246   11.1 
2025-08-12 00:00 UT   22 55 20.9   -06 30 12     1.508    2.471  156.6    9.4   247   11.1 
2025-08-13 00:00 UT   22 54 52.5   -06 44 11     1.502    2.470  157.7    8.9   247   11.1 
2025-08-14 00:00 UT   22 54 23.1   -06 58 23     1.497    2.469  158.9    8.5   248   11.1 
2025-08-15 00:00 UT   22 53 52.5   -07 12 46     1.492    2.468  160.1    8.0   248   11.0 
2025-08-16 00:00 UT   22 53 21.0   -07 27 19     1.487    2.467  161.3    7.6   249   11.0 
2025-08-17 00:00 UT   22 52 48.4   -07 42 02     1.482    2.466  162.4    7.1   249   11.0 
2025-08-18 00:00 UT   22 52 14.8   -07 56 54     1.478    2.466  163.6    6.7   250   10.9 
2025-08-19 00:00 UT   22 51 40.3   -08 11 56     1.474    2.465  164.8    6.2   251   10.9 
2025-08-20 00:00 UT   22 51 05.0   -08 27 05     1.470    2.464  166.0    5.7   252   10.9 
2025-08-21 00:00 UT   22 50 28.8   -08 42 22     1.466    2.463  167.1    5.2   253   10.9 
2025-08-22 00:00 UT   22 49 51.8   -08 57 45     1.463    2.462  168.3    4.8   255   10.8 
2025-08-23 00:00 UT   22 49 14.2   -09 13 15     1.460    2.461  169.5    4.3   256   10.8 
2025-08-24 00:00 UT   22 48 35.8   -09 28 49     1.457    2.460  170.6    3.8   259   10.8 
2025-08-25 00:00 UT   22 47 56.9   -09 44 28     1.455    2.459  171.8    3.4   261   10.7 
2025-08-26 00:00 UT   22 47 17.4   -10 00 10     1.452    2.458  172.9    2.9   265   10.7 
2025-08-27 00:00 UT   22 46 37.4   -10 15 55     1.450    2.458  174.0    2.5   270   10.7 
2025-08-28 00:00 UT   22 45 56.9   -10 31 42     1.449    2.457  175.0    2.1   278   10.6 
2025-08-29 00:00 UT   22 45 16.1   -10 47 31     1.447    2.456  175.9    1.7   289   10.6 
2025-08-30 00:00 UT   22 44 35.0   -11 03 19     1.446    2.455  176.6    1.4   304   10.6 
2025-08-31 00:00 UT   22 43 53.7   -11 19 07     1.446    2.454  176.9    1.3   326   10.6 
2025-09-01 00:00 UT   22 43 12.2   -11 34 54     1.445    2.453  176.7    1.3   348   10.6 
2025-09-02 00:00 UT   22 42 30.5   -11 50 38     1.445    2.452  176.2    1.6     6   10.6 
2025-09-03 00:00 UT   22 41 48.8   -12 06 20     1.445    2.452  175.3    1.9    18   10.6 
2025-09-04 00:00 UT   22 41 07.1   -12 21 58     1.445    2.451  174.3    2.3    27   10.6 
2025-09-05 00:00 UT   22 40 25.5   -12 37 31     1.446    2.450  173.3    2.8    32   10.7 
2025-09-06 00:00 UT   22 39 44.0   -12 52 59     1.447    2.449  172.2    3.2    37   10.7 
2025-09-07 00:00 UT   22 39 02.7   -13 08 21     1.448    2.448  171.0    3.7    40   10.7 
2025-09-08 00:00 UT   22 38 21.7   -13 23 37     1.449    2.448  169.9    4.2    42   10.8 

    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.