(511) Davida
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	21 Oct 2025	11.9	2.680 AU	3.005 AU	09h59m	+17°22'	61.7°	19.1°
Opposition	23 Feb 2026	10.6	2.876 AU	1.918 AU	10h54m	+26°22'	162.2°	6.1°

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 Davida are:

            e (Eccentricity)                : 0.1896285
            a (Semimajor axis)              : 3.1636191
            i (Inclination)                 : 15.95005
            Ω (Longitude of ascending node) : 107.55547
            ω (Argument of perihelion)      : 336.66693
            M (Mean anomaly)                : 35.24756
            Epoch                           : 2025 Nov 21

            L (Longitude of perihelion)     : 85.02943
            B (Latitude of perihelion)      : -6.24852
            P (Orbital period in years)     : 5.63            
        

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
2025-10-21 00:00 UT   09 59 28.4   +17 22 50     3.005    2.680   61.7   19.1   293   11.9 
2025-10-21 12:39 UT   10 00 14.2   +17 21 20     2.999    2.680   62.0   19.1   293   11.9 
2025-10-22 00:00 UT   10 00 55.1   +17 19 60     2.994    2.681   62.3   19.2   293   11.9 
2025-10-23 00:00 UT   10 02 21.3   +17 17 13     2.983    2.682   63.0   19.3   293   11.9 
2025-10-24 00:00 UT   10 03 46.8   +17 14 29     2.973    2.684   63.7   19.4   293   11.9 
2025-10-25 00:00 UT   10 05 11.9   +17 11 49     2.962    2.685   64.3   19.5   293   11.9 
2025-10-26 00:00 UT   10 06 36.3   +17 09 12     2.951    2.686   65.0   19.6   293   11.9 
2025-10-27 00:00 UT   10 08 00.1   +17 06 40     2.940    2.688   65.6   19.7   293   11.9 
2025-10-28 00:00 UT   10 09 23.4   +17 04 11     2.929    2.689   66.3   19.8   293   11.9 
2025-10-29 00:00 UT   10 10 46.1   +17 01 46     2.918    2.690   67.0   19.9   293   11.9 
2025-10-30 00:00 UT   10 12 08.2   +16 59 25     2.907    2.692   67.7   20.0   293   11.9 
2025-10-31 00:00 UT   10 13 29.6   +16 57 08     2.896    2.693   68.4   20.0   293   11.9 
2025-11-01 00:00 UT   10 14 50.5   +16 54 56     2.885    2.694   69.0   20.1   293   11.9 
2025-11-02 00:00 UT   10 16 10.7   +16 52 49     2.874    2.696   69.7   20.2   293   11.9 
2025-11-03 00:00 UT   10 17 30.3   +16 50 46     2.862    2.697   70.4   20.3   293   11.9 
2025-11-04 00:00 UT   10 18 49.2   +16 48 47     2.851    2.698   71.1   20.4   293   11.9 
2025-11-05 00:00 UT   10 20 07.5   +16 46 54     2.840    2.700   71.8   20.4   293   11.8 
2025-11-06 00:00 UT   10 21 25.2   +16 45 05     2.828    2.701   72.5   20.5   293   11.8 
2025-11-07 00:00 UT   10 22 42.1   +16 43 22     2.817    2.702   73.2   20.6   293   11.8 
2025-11-08 00:00 UT   10 23 58.5   +16 41 44     2.805    2.704   73.9   20.6   293   11.8 
2025-11-09 00:00 UT   10 25 14.1   +16 40 12     2.794    2.705   74.6   20.7   293   11.8 
2025-11-10 00:00 UT   10 26 29.0   +16 38 45     2.782    2.706   75.3   20.7   293   11.8 
2025-11-11 00:00 UT   10 27 43.3   +16 37 23     2.770    2.708   76.0   20.8   293   11.8 
2025-11-12 00:00 UT   10 28 56.8   +16 36 08     2.759    2.709   76.8   20.8   293   11.8 
2025-11-13 00:00 UT   10 30 09.6   +16 34 58     2.747    2.711   77.5   20.9   293   11.8 
2025-11-14 00:00 UT   10 31 21.6   +16 33 55     2.735    2.712   78.2   20.9   293   11.8 
2025-11-15 00:00 UT   10 32 32.9   +16 32 58     2.723    2.713   79.0   21.0   293   11.8 
2025-11-16 00:00 UT   10 33 43.4   +16 32 08     2.712    2.715   79.7   21.0   293   11.8 

    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.