(164) Eva
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	4 Dec 2023	14.8	3.256 AU	3.158 AU	11h44m	+27°45'	86.8°	17.6°
Opposition	27 Feb 2024	14.2	3.412 AU	2.542 AU	11h39m	+39°02'	146.6°	9.2°

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)                : 0.3470831
            a (Semimajor axis)              : 2.6310530
            i (Inclination)                 : 24.47619
            Ω (Longitude of ascending node) : 76.78717
            ω (Argument of perihelion)      : 284.01832
            M (Mean anomaly)                : 99.78160
            Epoch                           : 2023 Sep 13

            L (Longitude of perihelion)     : 2.12718
            B (Latitude of perihelion)      : -23.70177
            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
2023-12-04 00:00 UT   11 44 00.4   +27 45 02     3.158    3.256   86.8   17.6   297   14.8 
2023-12-04 02:11 UT   11 44 05.0   +27 45 20     3.157    3.257   86.9   17.6   297   14.8 
2023-12-05 00:00 UT   11 44 50.4   +27 48 25     3.147    3.258   87.6   17.6   297   14.8 
2023-12-06 00:00 UT   11 45 39.4   +27 51 57     3.135    3.261   88.4   17.6   296   14.8 
2023-12-07 00:00 UT   11 46 27.6   +27 55 39     3.124    3.263   89.2   17.6   296   14.8 
2023-12-08 00:00 UT   11 47 14.8   +27 59 29     3.113    3.265   90.0   17.6   296   14.8 
2023-12-09 00:00 UT   11 48 01.1   +28 03 29     3.101    3.267   90.8   17.5   295   14.8 
2023-12-10 00:00 UT   11 48 46.4   +28 07 39     3.090    3.269   91.6   17.5   295   14.8 
2023-12-11 00:00 UT   11 49 30.8   +28 11 58     3.078    3.271   92.4   17.5   295   14.8 
2023-12-12 00:00 UT   11 50 14.2   +28 16 26     3.067    3.273   93.2   17.5   294   14.8 
2023-12-13 00:00 UT   11 50 56.6   +28 21 04     3.055    3.276   94.0   17.4   294   14.8 
2023-12-14 00:00 UT   11 51 38.0   +28 25 52     3.044    3.278   94.9   17.4   294   14.8 
2023-12-15 00:00 UT   11 52 18.3   +28 30 49     3.033    3.280   95.7   17.4   293   14.8 
2023-12-16 00:00 UT   11 52 57.6   +28 35 56     3.021    3.282   96.5   17.3   293   14.7 
2023-12-17 00:00 UT   11 53 35.8   +28 41 12     3.010    3.284   97.3   17.3   293   14.7 
2023-12-18 00:00 UT   11 54 13.0   +28 46 37     2.999    3.286   98.1   17.2   292   14.7 
2023-12-19 00:00 UT   11 54 49.0   +28 52 12     2.988    3.288   99.0   17.2   292   14.7 
2023-12-20 00:00 UT   11 55 24.0   +28 57 57     2.976    3.290   99.8   17.1   291   14.7 
2023-12-21 00:00 UT   11 55 57.8   +29 03 51     2.965    3.292  100.6   17.1   291   14.7 
2023-12-22 00:00 UT   11 56 30.6   +29 09 55     2.954    3.294  101.5   17.0   291   14.7 
2023-12-23 00:00 UT   11 57 02.1   +29 16 07     2.943    3.296  102.3   17.0   290   14.7 
2023-12-24 00:00 UT   11 57 32.5   +29 22 29     2.932    3.298  103.1   16.9   290   14.7 
2023-12-25 00:00 UT   11 58 01.7   +29 29 01     2.921    3.300  104.0   16.8   289   14.7 
2023-12-26 00:00 UT   11 58 29.8   +29 35 41     2.911    3.302  104.8   16.7   289   14.7 
2023-12-27 00:00 UT   11 58 56.6   +29 42 31     2.900    3.304  105.7   16.7   288   14.6 
2023-12-28 00:00 UT   11 59 22.2   +29 49 30     2.889    3.306  106.5   16.6   288   14.6 
2023-12-29 00:00 UT   11 59 46.5   +29 56 38     2.879    3.308  107.4   16.5   287   14.6 
2023-12-30 00:00 UT   12 00 09.6   +30 03 55     2.868    3.310  108.2   16.4   287   14.6 
2023-12-31 00:00 UT   12 00 31.4   +30 11 20     2.858    3.312  109.1   16.3   286   14.6 
2024-01-01 00:00 UT   12 00 52.0   +30 18 55     2.847    3.314  109.9   16.2   286   14.6 
2024-01-02 00:00 UT   12 01 11.2   +30 26 38     2.837    3.316  110.8   16.1   285   14.6 
2024-01-03 00:00 UT   12 01 29.0   +30 34 30     2.827    3.318  111.6   16.0   285   14.6 

    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.