(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	26 Apr 2026	10.3	2.550 AU	1.553 AU	13h50m	-04°53'	170.0°	3.9°

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
2026-04-26 00:00 UT   13 50 42.7   -04 53 34     1.553    2.550  170.0    3.9   148   10.3 
2026-04-26 16:32 UT   13 49 58.4   -04 54 36     1.554    2.550  169.4    4.2   145   10.3 
2026-04-27 00:00 UT   13 49 38.4   -04 55 05     1.555    2.551  169.1    4.3   144   10.3 
2026-04-28 00:00 UT   13 48 34.6   -04 56 41     1.558    2.551  168.1    4.7   140   10.3 
2026-04-29 00:00 UT   13 47 31.4   -04 58 22     1.561    2.552  167.1    5.1   137   10.3 
2026-04-30 00:00 UT   13 46 28.7   -05 00 08     1.564    2.553  166.0    5.5   134   10.4 
2026-05-01 00:00 UT   13 45 26.8   -05 01 59     1.568    2.554  165.0    5.9   132   10.4 
2026-05-02 00:00 UT   13 44 25.6   -05 03 55     1.572    2.555  163.9    6.3   130   10.4 
2026-05-03 00:00 UT   13 43 25.2   -05 05 57     1.576    2.556  162.8    6.7   128   10.4 
2026-05-04 00:00 UT   13 42 25.7   -05 08 04     1.580    2.557  161.7    7.1   127   10.5 
2026-05-05 00:00 UT   13 41 27.1   -05 10 17     1.585    2.558  160.6    7.5   125   10.5 
2026-05-06 00:00 UT   13 40 29.5   -05 12 36     1.589    2.559  159.5    7.9   124   10.5 
2026-05-07 00:00 UT   13 39 32.9   -05 15 00     1.595    2.560  158.4    8.3   123   10.6 
2026-05-08 00:00 UT   13 38 37.3   -05 17 30     1.600    2.561  157.3    8.8   122   10.6 
2026-05-09 00:00 UT   13 37 42.9   -05 20 06     1.606    2.561  156.2    9.2   122   10.6 
2026-05-10 00:00 UT   13 36 49.7   -05 22 48     1.611    2.562  155.0    9.6   121   10.6 
2026-05-11 00:00 UT   13 35 57.7   -05 25 35     1.618    2.563  153.9   10.0   120   10.7 
2026-05-12 00:00 UT   13 35 06.9   -05 28 29     1.624    2.564  152.8   10.4   119   10.7 
2026-05-13 00:00 UT   13 34 17.5   -05 31 29     1.630    2.565  151.7   10.8   119   10.7 
2026-05-14 00:00 UT   13 33 29.4   -05 34 35     1.637    2.566  150.6   11.1   118   10.7 
2026-05-15 00:00 UT   13 32 42.6   -05 37 47     1.644    2.567  149.5   11.5   118   10.8 
2026-05-16 00:00 UT   13 31 57.3   -05 41 05     1.652    2.568  148.4   11.9   117   10.8 
2026-05-17 00:00 UT   13 31 13.5   -05 44 30     1.659    2.569  147.3   12.3   117   10.8 
2026-05-18 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 

    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.