(164) Eva
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Opposition	23 Apr 2025	13.8	3.307 AU	2.366 AU	14h39m	+10°19'	155.5°	7.3°
Today	11 May 2025	13.8	3.271 AU	2.362 AU	14h22m	+10°26'	149.3°	9.1°

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)      : 284.03654
            M (Mean anomaly)                : 238.28693
            Epoch                           : 2025 May 05

            L (Longitude of perihelion)     : 2.13956
            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
2025-05-11 00:00 UT   14 22 27.3   +10 26 38     2.362    3.271  149.3    9.1   157   13.8 
2025-05-11 18:41 UT   14 21 43.5   +10 25 33     2.364    3.270  148.8    9.2   155   13.8 
2025-05-12 00:00 UT   14 21 31.1   +10 25 13     2.364    3.269  148.6    9.3   155   13.8 
2025-05-13 00:00 UT   14 20 35.4   +10 23 37     2.367    3.267  147.9    9.5   153   13.9 
2025-05-14 00:00 UT   14 19 40.2   +10 21 48     2.370    3.265  147.2    9.7   152   13.9 
2025-05-15 00:00 UT   14 18 45.5   +10 19 48     2.373    3.263  146.4    9.9   150   13.9 
2025-05-16 00:00 UT   14 17 51.5   +10 17 35     2.376    3.261  145.6   10.1   148   13.9 
2025-05-17 00:00 UT   14 16 58.1   +10 15 11     2.380    3.259  144.8   10.3   147   13.9 
2025-05-18 00:00 UT   14 16 05.5   +10 12 35     2.384    3.257  144.0   10.5   146   13.9 
2025-05-19 00:00 UT   14 15 13.5   +10 09 48     2.388    3.254  143.2   10.7   144   13.9 
2025-05-20 00:00 UT   14 14 22.3   +10 06 48     2.392    3.252  142.4   11.0   143   13.9 
2025-05-21 00:00 UT   14 13 31.9   +10 03 38     2.396    3.250  141.5   11.2   142   13.9 
2025-05-22 00:00 UT   14 12 42.3   +10 00 15     2.401    3.248  140.6   11.4   140   14.0 
2025-05-23 00:00 UT   14 11 53.6   +09 56 42     2.406    3.246  139.8   11.6   139   14.0 
2025-05-24 00:00 UT   14 11 05.8   +09 52 57     2.411    3.243  138.9   11.8   138   14.0 
2025-05-25 00:00 UT   14 10 19.0   +09 49 01     2.417    3.241  138.0   12.1   137   14.0 
2025-05-26 00:00 UT   14 09 33.1   +09 44 53     2.422    3.239  137.1   12.3   136   14.0 
2025-05-27 00:00 UT   14 08 48.2   +09 40 35     2.428    3.237  136.3   12.5   135   14.0 
2025-05-28 00:00 UT   14 08 04.3   +09 36 06     2.434    3.234  135.4   12.7   134   14.0 
2025-05-29 00:00 UT   14 07 21.4   +09 31 27     2.440    3.232  134.5   12.9   133   14.0 
2025-05-30 00:00 UT   14 06 39.7   +09 26 37     2.447    3.230  133.6   13.1   133   14.0 
2025-05-31 00:00 UT   14 05 59.0   +09 21 36     2.454    3.228  132.6   13.4   132   14.1 
2025-06-01 00:00 UT   14 05 19.5   +09 16 26     2.460    3.225  131.7   13.6   131   14.1 
2025-06-02 00:00 UT   14 04 41.1   +09 11 05     2.467    3.223  130.8   13.8   130   14.1 
2025-06-03 00:00 UT   14 04 03.8   +09 05 35     2.475    3.221  129.9   14.0   129   14.1 
2025-06-04 00:00 UT   14 03 27.8   +08 59 56     2.482    3.219  129.0   14.2   129   14.1 
2025-06-05 00:00 UT   14 02 52.9   +08 54 07     2.490    3.216  128.1   14.4   128   14.1 
2025-06-06 00:00 UT   14 02 19.2   +08 48 08     2.497    3.214  127.2   14.6   127   14.1 
2025-06-07 00:00 UT   14 01 46.7   +08 42 01     2.505    3.212  126.3   14.8   127   14.1 
2025-06-08 00:00 UT   14 01 15.5   +08 35 45     2.513    3.209  125.4   14.9   126   14.2 
2025-06-09 00:00 UT   14 00 45.5   +08 29 21     2.522    3.207  124.4   15.1   125   14.2 
2025-06-10 00:00 UT   14 00 16.7   +08 22 48     2.530    3.205  123.5   15.3   125   14.2 

    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.