(511) Davida
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	17 Sep 2025	11.9	2.640 AU	3.316 AU	09h05m	+19°16'	40.9°	14.4°
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. 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
2025-09-17 00:00 UT   09 05 41.8   +19 16 51     3.316    2.640   40.9   14.4   290   11.9 
2025-09-17 07:37 UT   09 06 14.1   +19 15 45     3.314    2.640   41.1   14.5   290   11.9 
2025-09-18 00:00 UT   09 07 23.4   +19 13 21     3.309    2.641   41.5   14.6   290   11.9 
2025-09-19 00:00 UT   09 09 04.7   +19 09 51     3.301    2.642   42.0   14.8   290   11.9 
2025-09-20 00:00 UT   09 10 45.7   +19 06 20     3.293    2.643   42.6   14.9   290   11.9 
2025-09-21 00:00 UT   09 12 26.3   +19 02 49     3.285    2.644   43.2   15.1   290   11.9 
2025-09-22 00:00 UT   09 14 06.5   +18 59 17     3.277    2.645   43.8   15.2   290   11.9 
2025-09-23 00:00 UT   09 15 46.3   +18 55 46     3.269    2.646   44.4   15.4   290   11.9 
2025-09-24 00:00 UT   09 17 25.7   +18 52 14     3.261    2.647   45.0   15.5   291   11.9 
2025-09-25 00:00 UT   09 19 04.8   +18 48 42     3.252    2.648   45.6   15.7   291   11.9 
2025-09-26 00:00 UT   09 20 43.4   +18 45 11     3.244    2.650   46.1   15.8   291   11.9 
2025-09-27 00:00 UT   09 22 21.7   +18 41 39     3.235    2.651   46.7   16.0   291   11.9 
2025-09-28 00:00 UT   09 23 59.6   +18 38 08     3.227    2.652   47.3   16.1   291   11.9 
2025-09-29 00:00 UT   09 25 37.0   +18 34 38     3.218    2.653   47.9   16.3   291   11.9 
2025-09-30 00:00 UT   09 27 14.0   +18 31 08     3.209    2.654   48.5   16.4   291   11.9 
2025-10-01 00:00 UT   09 28 50.7   +18 27 38     3.200    2.655   49.1   16.6   291   11.9 
2025-10-02 00:00 UT   09 30 26.8   +18 24 10     3.191    2.657   49.7   16.7   291   11.9 
2025-10-03 00:00 UT   09 32 02.6   +18 20 42     3.182    2.658   50.4   16.9   291   11.9 
2025-10-04 00:00 UT   09 33 38.0   +18 17 15     3.173    2.659   51.0   17.0   292   11.9 
2025-10-05 00:00 UT   09 35 12.9   +18 13 49     3.164    2.660   51.6   17.1   292   11.9 
2025-10-06 00:00 UT   09 36 47.3   +18 10 25     3.154    2.661   52.2   17.3   292   11.9 
2025-10-07 00:00 UT   09 38 21.4   +18 07 01     3.145    2.662   52.8   17.4   292   11.9 
2025-10-08 00:00 UT   09 39 55.0   +18 03 39     3.135    2.664   53.4   17.5   292   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.