(511) Davida
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	31 Aug 2025	11.9	2.622 AU	3.432 AU	08h36m	+20°13'	31.3°	11.5°
Opposition	23 Feb 2026	10.6	2.875 AU	1.917 AU	10h54m	+26°22'	162.1°	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)                : 0.1898218
            a (Semimajor axis)              : 3.1650291
            i (Inclination)                 : 15.94716
            Ω (Longitude of ascending node) : 107.55661
            ω (Argument of perihelion)      : 336.86460
            M (Mean anomaly)                : 0.08266
            Epoch                           : 2025 May 05

            L (Longitude of perihelion)     : 85.22260
            B (Latitude of perihelion)      : -6.19722
            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. 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
2025-08-31 00:00 UT   08 36 04.0   +20 13 10     3.432    2.622   31.3   11.5   287   11.9 
2025-08-31 11:42 UT   08 36 56.3   +20 11 40     3.429    2.623   31.6   11.6   287   11.9 
2025-09-01 00:00 UT   08 37 51.1   +20 10 04     3.426    2.623   31.9   11.7   287   11.9 
2025-09-02 00:00 UT   08 39 37.8   +20 06 57     3.420    2.624   32.4   11.9   287   11.9 
2025-09-03 00:00 UT   08 41 24.3   +20 03 47     3.413    2.625   33.0   12.1   288   11.9 
2025-09-04 00:00 UT   08 43 10.5   +20 00 36     3.407    2.626   33.5   12.2   288   11.9 
2025-09-05 00:00 UT   08 44 56.4   +19 57 22     3.401    2.627   34.1   12.4   288   11.9 
2025-09-06 00:00 UT   08 46 41.9   +19 54 07     3.394    2.628   34.6   12.6   288   11.9 
2025-09-07 00:00 UT   08 48 27.2   +19 50 50     3.388    2.629   35.2   12.8   288   11.9 
2025-09-08 00:00 UT   08 50 12.2   +19 47 32     3.381    2.630   35.8   12.9   288   11.9 
2025-09-09 00:00 UT   08 51 56.8   +19 44 12     3.374    2.631   36.3   13.1   289   11.9 
2025-09-10 00:00 UT   08 53 41.2   +19 40 51     3.367    2.632   36.9   13.3   289   11.9 
2025-09-11 00:00 UT   08 55 25.2   +19 37 28     3.360    2.633   37.5   13.4   289   11.9 
2025-09-12 00:00 UT   08 57 08.9   +19 34 04     3.353    2.634   38.0   13.6   289   11.9 
2025-09-13 00:00 UT   08 58 52.3   +19 30 38     3.346    2.635   38.6   13.8   289   11.9 
2025-09-14 00:00 UT   09 00 35.3   +19 27 12     3.339    2.636   39.2   13.9   289   11.9 
2025-09-15 00:00 UT   09 02 18.0   +19 23 45     3.331    2.637   39.7   14.1   289   11.9 
2025-09-16 00:00 UT   09 04 00.4   +19 20 16     3.324    2.638   40.3   14.3   290   11.9 
2025-09-17 00:00 UT   09 05 42.5   +19 16 47     3.316    2.639   40.9   14.4   290   11.9 
2025-09-18 00:00 UT   09 07 24.1   +19 13 17     3.308    2.641   41.5   14.6   290   11.9 
2025-09-19 00:00 UT   09 09 05.5   +19 09 47     3.301    2.642   42.0   14.8   290   11.9 
2025-09-20 00:00 UT   09 10 46.4   +19 06 16     3.293    2.643   42.6   14.9   290   11.9 

    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.