(164) Eva
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	12 May 2026	12.9	2.064 AU	1.772 AU	21h49m	-30°07'	91.5°	29.3°
Opposition	31 Aug 2026	11.0	1.754 AU	0.931 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)                : 0.3463142
            a (Semimajor axis)              : 2.6326903
            i (Inclination)                 : 24.47471
            Ω (Longitude of ascending node) : 76.78065
            ω (Argument of perihelion)      : 284.01979
            M (Mean anomaly)                : 284.44450
            Epoch                           : 2025 Nov 21

            L (Longitude of perihelion)     : 2.12209
            B (Latitude of perihelion)      : -23.70018
            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.

Ephemerides:

Date       Time       RA (2000)    DEC (2000)    delta   radius  elong  phase   PA    magn
2026-05-12 00:00 UT   21 49 46.7   -30 07 05     1.772    2.064   91.5   29.3   250   12.9 
2026-05-12 13:51 UT   21 51 00.1   -30 10 06     1.765    2.061   91.9   29.3   250   12.9 
2026-05-13 00:00 UT   21 51 53.8   -30 12 21     1.759    2.060   92.1   29.4   250   12.8 
2026-05-14 00:00 UT   21 54 00.9   -30 17 44     1.746    2.056   92.6   29.4   250   12.8 
2026-05-15 00:00 UT   21 56 07.9   -30 23 15     1.732    2.053   93.1   29.5   250   12.8 
2026-05-16 00:00 UT   21 58 14.9   -30 28 54     1.719    2.049   93.7   29.5   250   12.8 
2026-05-17 00:00 UT   22 00 21.9   -30 34 42     1.706    2.045   94.2   29.5   250   12.8 
2026-05-18 00:00 UT   22 02 28.8   -30 40 37     1.693    2.042   94.7   29.6   250   12.8 
2026-05-19 00:00 UT   22 04 35.7   -30 46 41     1.680    2.038   95.2   29.6   250   12.7 
2026-05-20 00:00 UT   22 06 42.6   -30 52 53     1.667    2.035   95.8   29.7   250   12.7 
2026-05-21 00:00 UT   22 08 49.4   -30 59 14     1.654    2.031   96.3   29.7   250   12.7 
2026-05-22 00:00 UT   22 10 56.2   -31 05 44     1.641    2.027   96.8   29.7   250   12.7 
2026-05-23 00:00 UT   22 13 02.9   -31 12 22     1.628    2.024   97.3   29.7   250   12.7 
2026-05-24 00:00 UT   22 15 09.5   -31 19 10     1.616    2.020   97.8   29.8   251   12.6 
2026-05-25 00:00 UT   22 17 16.1   -31 26 07     1.603    2.017   98.4   29.8   251   12.6 
2026-05-26 00:00 UT   22 19 22.6   -31 33 13     1.590    2.013   98.9   29.8   251   12.6 
2026-05-27 00:00 UT   22 21 29.0   -31 40 29     1.578    2.010   99.4   29.8   251   12.6 
2026-05-28 00:00 UT   22 23 35.4   -31 47 55     1.566    2.006   99.9   29.8   251   12.6 
2026-05-29 00:00 UT   22 25 41.7   -31 55 30     1.554    2.003  100.4   29.8   251   12.5 
2026-05-30 00:00 UT   22 27 47.9   -32 03 15     1.541    1.999  100.9   29.9   251   12.5 

    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.