(13) Egeria
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Opposition	19 Apr 2026	10.2	2.544 AU	1.544 AU	13h57m	-04°45'	173.2°	2.7°
Today	17 May 2026	10.8	2.569 AU	1.659 AU	13h31m	-05°44'	147.3°	12.3°

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 Egeria are:

            e (Eccentricity)                : 0.0846820
            a (Semimajor axis)              : 2.5762588
            i (Inclination)                 : 16.52553
            Ω (Longitude of ascending node) : 43.17717
            ω (Argument of perihelion)      : 79.06456
            M (Mean anomaly)                : 40.99101
            Epoch                           : 2025 Nov 21

            L (Longitude of perihelion)     : 121.78264
            B (Latitude of perihelion)      : 16.21709
            P (Orbital period in years)     : 4.14            
        

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
2026-05-17 00:00 UT   13 31 13.5   -05 44 30     1.659    2.569  147.3   12.3   117   10.8 
2026-05-17 04:59 UT   13 31 04.5   -05 45 13     1.661    2.569  147.1   12.4   117   10.8 
2026-05-18 00:00 UT   13 30 31.1   -05 48 01     1.667    2.570  146.2   12.6   117   10.8 
2026-05-19 00:00 UT   13 29 50.2   -05 51 38     1.675    2.571  145.1   13.0   116   10.9 
2026-05-20 00:00 UT   13 29 10.9   -05 55 21     1.683    2.571  144.1   13.4   116   10.9 
2026-05-21 00:00 UT   13 28 33.1   -05 59 11     1.691    2.572  143.0   13.7   116   10.9 
2026-05-22 00:00 UT   13 27 56.9   -06 03 07     1.700    2.573  141.9   14.0   115   10.9 
2026-05-23 00:00 UT   13 27 22.3   -06 07 09     1.708    2.574  140.9   14.4   115   10.9 
2026-05-24 00:00 UT   13 26 49.4   -06 11 18     1.717    2.575  139.8   14.7   115   11.0 
2026-05-25 00:00 UT   13 26 18.0   -06 15 32     1.727    2.576  138.8   15.0   115   11.0 
2026-05-26 00:00 UT   13 25 48.2   -06 19 53     1.736    2.577  137.7   15.3   114   11.0 
2026-05-27 00:00 UT   13 25 20.1   -06 24 19     1.745    2.578  136.7   15.6   114   11.0 
2026-05-28 00:00 UT   13 24 53.6   -06 28 52     1.755    2.579  135.7   15.9   114   11.1 
2026-05-29 00:00 UT   13 24 28.8   -06 33 30     1.765    2.580  134.6   16.2   114   11.1 
2026-05-30 00:00 UT   13 24 05.6   -06 38 15     1.775    2.581  133.6   16.5   114   11.1 
2026-05-31 00:00 UT   13 23 44.0   -06 43 05     1.785    2.581  132.6   16.8   114   11.1 
2026-06-01 00:00 UT   13 23 24.1   -06 48 01     1.795    2.582  131.6   17.1   113   11.2 
2026-06-02 00:00 UT   13 23 05.8   -06 53 02     1.806    2.583  130.6   17.3   113   11.2 
2026-06-03 00:00 UT   13 22 49.1   -06 58 10     1.816    2.584  129.6   17.6   113   11.2 
2026-06-04 00:00 UT   13 22 34.1   -07 03 22     1.827    2.585  128.7   17.8   113   11.2 
2026-06-05 00:00 UT   13 22 20.7   -07 08 40     1.838    2.586  127.7   18.1   113   11.2 
2026-06-06 00:00 UT   13 22 08.9   -07 14 04     1.849    2.587  126.7   18.3   113   11.3 
2026-06-07 00:00 UT   13 21 58.8   -07 19 33     1.860    2.588  125.8   18.6   113   11.3 
2026-06-08 00:00 UT   13 21 50.2   -07 25 07     1.872    2.589  124.8   18.8   113   11.3 
2026-06-09 00:00 UT   13 21 43.2   -07 30 47     1.883    2.590  123.9   19.0   113   11.3 
2026-06-10 00:00 UT   13 21 37.9   -07 36 32     1.895    2.590  122.9   19.2   112   11.3 
2026-06-11 00:00 UT   13 21 34.1   -07 42 22     1.906    2.591  122.0   19.4   112   11.4 
2026-06-12 00:00 UT   13 21 31.9   -07 48 17     1.918    2.592  121.1   19.6   112   11.4 
2026-06-13 00:00 UT   13 21 31.2   -07 54 17     1.930    2.593  120.1   19.8   112   11.4 
2026-06-14 00:00 UT   13 21 32.1   -08 00 22     1.942    2.594  119.2   20.0   112   11.4 
2026-06-15 00:00 UT   13 21 34.6   -08 06 32     1.954    2.595  118.3   20.2   112   11.5 
2026-06-16 00:00 UT   13 21 38.6   -08 12 47     1.967    2.596  117.4   20.3   112   11.5 

    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.