(48) Doris
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Opposition	20 Mar 2025	11.3	3.154 AU	2.158 AU	11h58m	-00°32'	179.4°	0.2°
Today	9 May 2025	12.5	3.184 AU	2.495 AU	11h36m	+03°17'	125.1°	15.0°

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 Doris are:

            e (Eccentricity)                : 0.0664039
            a (Semimajor axis)              : 3.1122532
            i (Inclination)                 : 6.55846
            Ω (Longitude of ascending node) : 183.43072
            ω (Argument of perihelion)      : 251.21995
            M (Mean anomaly)                : 105.97926
            Epoch                           : 2025 May 05

            L (Longitude of perihelion)     : 254.53571
            B (Latitude of perihelion)      : -6.20788
            P (Orbital period in years)     : 5.49            
        

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
2025-05-09 00:00 UT   11 36 50.1   +03 17 56     2.495    3.184  125.1   15.0   114   12.5 
2025-05-09 07:14 UT   11 36 49.7   +03 18 24     2.498    3.184  124.8   15.1   114   12.5 
2025-05-10 00:00 UT   11 36 49.2   +03 19 25     2.507    3.184  124.1   15.2   114   12.5 
2025-05-11 00:00 UT   11 36 49.4   +03 20 47     2.519    3.185  123.1   15.4   114   12.5 
2025-05-12 00:00 UT   11 36 50.8   +03 21 59     2.531    3.186  122.2   15.6   114   12.5 
2025-05-13 00:00 UT   11 36 53.4   +03 23 04     2.543    3.186  121.2   15.7   114   12.5 
2025-05-14 00:00 UT   11 36 57.1   +03 23 60     2.556    3.187  120.3   15.9   114   12.5 
2025-05-15 00:00 UT   11 37 01.9   +03 24 47     2.568    3.187  119.3   16.1   114   12.6 
2025-05-16 00:00 UT   11 37 07.9   +03 25 27     2.581    3.188  118.4   16.2   114   12.6 
2025-05-17 00:00 UT   11 37 15.0   +03 25 58     2.594    3.189  117.4   16.4   114   12.6 
2025-05-18 00:00 UT   11 37 23.2   +03 26 21     2.607    3.189  116.5   16.5   114   12.6 
2025-05-19 00:00 UT   11 37 32.6   +03 26 35     2.620    3.190  115.6   16.6   114   12.6 
2025-05-20 00:00 UT   11 37 43.1   +03 26 42     2.633    3.190  114.6   16.8   114   12.6 
2025-05-21 00:00 UT   11 37 54.6   +03 26 41     2.646    3.191  113.7   16.9   114   12.7 
2025-05-22 00:00 UT   11 38 07.3   +03 26 31     2.660    3.191  112.8   17.0   114   12.7 
2025-05-23 00:00 UT   11 38 21.1   +03 26 14     2.673    3.192  111.9   17.1   114   12.7 
2025-05-24 00:00 UT   11 38 35.9   +03 25 49     2.687    3.193  111.0   17.2   114   12.7 
2025-05-25 00:00 UT   11 38 51.8   +03 25 16     2.700    3.193  110.1   17.3   114   12.7 
2025-05-26 00:00 UT   11 39 08.8   +03 24 35     2.714    3.194  109.2   17.4   114   12.7 
2025-05-27 00:00 UT   11 39 26.8   +03 23 47     2.728    3.194  108.3   17.5   114   12.8 
2025-05-28 00:00 UT   11 39 45.9   +03 22 51     2.742    3.195  107.4   17.6   114   12.8 
2025-05-29 00:00 UT   11 40 06.0   +03 21 47     2.756    3.196  106.6   17.7   114   12.8 
2025-05-30 00:00 UT   11 40 27.2   +03 20 36     2.769    3.196  105.7   17.8   114   12.8 
2025-05-31 00:00 UT   11 40 49.3   +03 19 18     2.783    3.197  104.8   17.9   114   12.8 
2025-06-01 00:00 UT   11 41 12.4   +03 17 52     2.798    3.197  104.0   17.9   114   12.8 
2025-06-02 00:00 UT   11 41 36.6   +03 16 20     2.812    3.198  103.1   18.0   114   12.8 
2025-06-03 00:00 UT   11 42 01.7   +03 14 40     2.826    3.198  102.2   18.1   114   12.8 
2025-06-04 00:00 UT   11 42 27.7   +03 12 53     2.840    3.199  101.4   18.1   114   12.9 
2025-06-05 00:00 UT   11 42 54.7   +03 10 59     2.854    3.200  100.6   18.2   114   12.9 
2025-06-06 00:00 UT   11 43 22.7   +03 08 59     2.868    3.200   99.7   18.2   114   12.9 
2025-06-07 00:00 UT   11 43 51.5   +03 06 52     2.883    3.201   98.9   18.3   114   12.9 
2025-06-08 00:00 UT   11 44 21.3   +03 04 38     2.897    3.201   98.1   18.3   114   12.9 

    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.