(164) Eva
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	18 Sep 2025	14.7	2.931 AU	3.530 AU	14h44m	-07°43'	46.5°	14.4°
Opposition	31 Aug 2026	11.0	1.753 AU	0.930 AU	00h36m	-53°17'	129.3°	26.4°

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 Eva are:

            e (Eccentricity)                : 0.3464372
            a (Semimajor axis)              : 2.6324151
            i (Inclination)                 : 24.47547
            Ω (Longitude of ascending node) : 76.77985
            ω (Argument of perihelion)      : 284.03653
            M (Mean anomaly)                : 238.28693
            Epoch                           : 2025 May 05

            L (Longitude of perihelion)     : 2.13955
            B (Latitude of perihelion)      : -23.69908
            P (Orbital period in years)     : 4.27            
        

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
2025-09-18 00:00 UT   14 44 02.2   -07 43 03     3.530    2.931   46.5   14.4   100   14.7 
2025-09-18 09:12 UT   14 44 27.9   -07 46 59     3.533    2.929   46.3   14.3   100   14.7 
2025-09-19 00:00 UT   14 45 09.5   -07 53 20     3.537    2.928   45.9   14.3   100   14.7 
2025-09-20 00:00 UT   14 46 17.3   -08 03 36     3.544    2.924   45.2   14.1   100   14.6 
2025-09-21 00:00 UT   14 47 25.7   -08 13 50     3.551    2.921   44.6   14.0   100   14.6 
2025-09-22 00:00 UT   14 48 34.7   -08 24 04     3.557    2.918   43.9   13.8    99   14.6 
2025-09-23 00:00 UT   14 49 44.2   -08 34 17     3.564    2.915   43.3   13.6    99   14.6 
2025-09-24 00:00 UT   14 50 54.3   -08 44 28     3.570    2.912   42.6   13.5    99   14.6 
2025-09-25 00:00 UT   14 52 04.9   -08 54 38     3.576    2.909   42.0   13.3    99   14.6 
2025-09-26 00:00 UT   14 53 16.1   -09 04 47     3.582    2.905   41.3   13.2    99   14.6 
2025-09-27 00:00 UT   14 54 27.9   -09 14 55     3.588    2.902   40.7   13.0    99   14.6 
2025-09-28 00:00 UT   14 55 40.1   -09 25 01     3.594    2.899   40.0   12.8    98   14.6 
2025-09-29 00:00 UT   14 56 52.9   -09 35 06     3.600    2.896   39.4   12.7    98   14.6 
2025-09-30 00:00 UT   14 58 06.3   -09 45 09     3.605    2.893   38.7   12.5    98   14.6 
2025-10-01 00:00 UT   14 59 20.1   -09 55 11     3.611    2.889   38.1   12.3    98   14.6 
2025-10-02 00:00 UT   15 00 34.5   -10 05 12     3.616    2.886   37.4   12.2    98   14.6 
2025-10-03 00:00 UT   15 01 49.4   -10 15 11     3.621    2.883   36.8   12.0    97   14.6 
2025-10-04 00:00 UT   15 03 04.8   -10 25 08     3.626    2.880   36.2   11.8    97   14.6 
2025-10-05 00:00 UT   15 04 20.7   -10 35 04     3.631    2.877   35.5   11.7    97   14.6 
2025-10-06 00:00 UT   15 05 37.1   -10 44 58     3.636    2.873   34.9   11.5    97   14.6 
2025-10-07 00:00 UT   15 06 54.0   -10 54 51     3.641    2.870   34.3   11.3    97   14.6 
2025-10-08 00:00 UT   15 08 11.4   -11 04 42     3.645    2.867   33.6   11.1    96   14.6 
2025-10-09 00:00 UT   15 09 29.3   -11 14 31     3.649    2.864   33.0   11.0    96   14.6 
2025-10-10 00:00 UT   15 10 47.7   -11 24 19     3.654    2.860   32.4   10.8    96   14.5 
2025-10-11 00:00 UT   15 12 06.6   -11 34 04     3.658    2.857   31.7   10.6    96   14.5 
2025-10-12 00:00 UT   15 13 26.0   -11 43 48     3.661    2.854   31.1   10.4    95   14.5 

    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.