(164) Eva
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	13 Jul 2025	14.5	3.123 AU	2.867 AU	13h56m	+03°47'	94.9°	18.9°
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
2025-07-13 00:00 UT   13 56 11.9   +03 47 16     2.867    3.123   94.9   18.9   112   14.5 
2025-07-13 09:50 UT   13 56 17.2   +03 43 19     2.871    3.122   94.6   18.9   112   14.5 
2025-07-14 00:00 UT   13 56 25.0   +03 37 38     2.878    3.120   94.1   19.0   112   14.5 
2025-07-15 00:00 UT   13 56 39.2   +03 27 58     2.889    3.118   93.3   19.0   112   14.5 
2025-07-16 00:00 UT   13 56 54.5   +03 18 15     2.900    3.115   92.5   19.0   112   14.5 
2025-07-17 00:00 UT   13 57 10.9   +03 08 29     2.912    3.112   91.7   19.1   111   14.5 
2025-07-18 00:00 UT   13 57 28.4   +02 58 40     2.923    3.110   90.9   19.1   111   14.5 
2025-07-19 00:00 UT   13 57 46.9   +02 48 49     2.934    3.107   90.1   19.1   111   14.5 
2025-07-20 00:00 UT   13 58 06.5   +02 38 56     2.945    3.104   89.3   19.1   111   14.5 
2025-07-21 00:00 UT   13 58 27.2   +02 29 00     2.957    3.102   88.5   19.1   110   14.6 
2025-07-22 00:00 UT   13 58 48.8   +02 19 02     2.968    3.099   87.7   19.1   110   14.6 
2025-07-23 00:00 UT   13 59 11.6   +02 09 02     2.979    3.096   87.0   19.1   110   14.6 
2025-07-24 00:00 UT   13 59 35.3   +01 58 59     2.991    3.094   86.2   19.1   110   14.6 
2025-07-25 00:00 UT   14 00 00.1   +01 48 55     3.002    3.091   85.4   19.1   110   14.6 
2025-07-26 00:00 UT   14 00 25.8   +01 38 49     3.013    3.088   84.6   19.1   109   14.6 
2025-07-27 00:00 UT   14 00 52.6   +01 28 40     3.024    3.085   83.9   19.1   109   14.6 
2025-07-28 00:00 UT   14 01 20.3   +01 18 31     3.035    3.083   83.1   19.1   109   14.6 
2025-07-29 00:00 UT   14 01 49.1   +01 08 19     3.047    3.080   82.3   19.1   109   14.6 
2025-07-30 00:00 UT   14 02 18.7   +00 58 06     3.058    3.077   81.6   19.0   109   14.6 
2025-07-31 00:00 UT   14 02 49.3   +00 47 52     3.069    3.075   80.8   19.0   108   14.6 
2025-08-01 00:00 UT   14 03 20.9   +00 37 36     3.080    3.072   80.1   19.0   108   14.6 
2025-08-02 00:00 UT   14 03 53.4   +00 27 19     3.091    3.069   79.3   19.0   108   14.6 
2025-08-03 00:00 UT   14 04 26.8   +00 17 00     3.102    3.066   78.6   18.9   108   14.6 
2025-08-04 00:00 UT   14 05 01.1   +00 06 41     3.113    3.063   77.8   18.9   108   14.6 
2025-08-05 00:00 UT   14 05 36.2   +00 03 39     3.124    3.061   77.1   18.8   108   14.6 
2025-08-06 00:00 UT   14 06 12.3   +00 14 01     3.135    3.058   76.3   18.8   107   14.6 
2025-08-07 00:00 UT   14 06 49.2   +00 24 23     3.145    3.055   75.6   18.8   107   14.6 
2025-08-08 00:00 UT   14 07 27.0   +00 34 47     3.156    3.052   74.9   18.7   107   14.6 
2025-08-09 00:00 UT   14 08 05.7   +00 45 11     3.167    3.049   74.1   18.6   107   14.7 
2025-08-10 00:00 UT   14 08 45.2   +00 55 36     3.177    3.047   73.4   18.6   107   14.7 
2025-08-11 00:00 UT   14 09 25.5   -01 06 01     3.188    3.044   72.7   18.5   106   14.7 
2025-08-12 00:00 UT   14 10 06.7   -01 16 27     3.199    3.041   71.9   18.5   106   14.7 

    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.