(48) Doris
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Opposition	1 Jun 2026	11.8	3.319 AU	2.313 AU	16h45m	-13°31'	171.2°	2.7°
Today	12 Jul 2026	12.4	3.319 AU	2.516 AU	16h20m	-12°59'	135.5°	12.4°

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)                : 0.0660520
            a (Semimajor axis)              : 3.1135589
            i (Inclination)                 : 6.55721
            Ω (Longitude of ascending node) : 183.42116
            ω (Argument of perihelion)      : 251.45061
            M (Mean anomaly)                : 177.53892
            Epoch                           : 2026 Jun 09

            L (Longitude of perihelion)     : 254.75806
            B (Latitude of perihelion)      : -6.21518
            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.

Ephemerides:

Date       Time       RA (2000)    DEC (2000)    delta   radius  elong  phase   PA    magn
2026-07-12 00:00 UT   16 20 19.5   -12 59 58     2.516    3.319  135.5   12.4   108   12.4 
2026-07-12 03:55 UT   16 20 16.3   -13 00 06     2.518    3.319  135.4   12.4   108   12.5 
2026-07-13 00:00 UT   16 20 00.8   -13 00 47     2.526    3.319  134.5   12.6   108   12.5 
2026-07-14 00:00 UT   16 19 43.3   -13 01 40     2.536    3.319  133.5   12.8   108   12.5 
2026-07-15 00:00 UT   16 19 27.0   -13 02 38     2.546    3.319  132.5   13.0   107   12.5 
2026-07-16 00:00 UT   16 19 11.9   -13 03 40     2.556    3.319  131.6   13.2   107   12.5 
2026-07-17 00:00 UT   16 18 58.1   -13 04 47     2.567    3.319  130.6   13.5   107   12.5 
2026-07-18 00:00 UT   16 18 45.5   -13 05 58     2.577    3.319  129.6   13.7   107   12.5 
2026-07-19 00:00 UT   16 18 34.1   -13 07 13     2.588    3.319  128.6   13.8   106   12.6 
2026-07-20 00:00 UT   16 18 23.9   -13 08 33     2.599    3.319  127.6   14.0   106   12.6 
2026-07-21 00:00 UT   16 18 15.0   -13 09 57     2.610    3.319  126.7   14.2   106   12.6 
2026-07-22 00:00 UT   16 18 07.3   -13 11 25     2.621    3.318  125.7   14.4   106   12.6 
2026-07-23 00:00 UT   16 18 00.9   -13 12 57     2.633    3.318  124.7   14.6   106   12.6 
2026-07-24 00:00 UT   16 17 55.6   -13 14 33     2.644    3.318  123.8   14.7   105   12.6 
2026-07-25 00:00 UT   16 17 51.7   -13 16 13     2.656    3.318  122.8   14.9   105   12.7 
2026-07-26 00:00 UT   16 17 48.9   -13 17 56     2.668    3.318  121.9   15.1   105   12.7 
2026-07-27 00:00 UT   16 17 47.4   -13 19 44     2.679    3.318  121.0   15.2   105   12.7 
2026-07-28 00:00 UT   16 17 47.1   -13 21 35     2.692    3.318  120.0   15.4   105   12.7 
2026-07-29 00:00 UT   16 17 48.0   -13 23 30     2.704    3.318  119.1   15.5   104   12.7 
2026-07-30 00:00 UT   16 17 50.1   -13 25 28     2.716    3.318  118.2   15.6   104   12.7 
2026-07-31 00:00 UT   16 17 53.5   -13 27 30     2.728    3.318  117.2   15.8   104   12.7 
2026-08-01 00:00 UT   16 17 58.0   -13 29 35     2.741    3.318  116.3   15.9   104   12.8 
2026-08-02 00:00 UT   16 18 03.8   -13 31 43     2.753    3.318  115.4   16.0   104   12.8 
2026-08-03 00:00 UT   16 18 10.7   -13 33 55     2.766    3.318  114.5   16.2   103   12.8 
2026-08-04 00:00 UT   16 18 18.9   -13 36 10     2.779    3.318  113.6   16.3   103   12.8 
2026-08-05 00:00 UT   16 18 28.2   -13 38 28     2.792    3.318  112.7   16.4   103   12.8 
2026-08-06 00:00 UT   16 18 38.7   -13 40 49     2.804    3.317  111.8   16.5   103   12.8 
2026-08-07 00:00 UT   16 18 50.3   -13 43 12     2.818    3.317  110.9   16.6   103   12.8 
2026-08-08 00:00 UT   16 19 03.2   -13 45 39     2.831    3.317  110.0   16.7   103   12.9 
2026-08-09 00:00 UT   16 19 17.2   -13 48 09     2.844    3.317  109.1   16.8   102   12.9 
2026-08-10 00:00 UT   16 19 32.3   -13 50 41     2.857    3.317  108.2   16.9   102   12.9 
2026-08-11 00:00 UT   16 19 48.6   -13 53 16     2.870    3.317  107.4   17.0   102   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.