(13) Egeria
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	16 Apr 2026	10.2	2.541 AU	1.544 AU	14h01m	-04°42'	171.6°	3.3°
Opposition	19 Apr 2026	10.2	2.544 AU	1.544 AU	13h57m	-04°45'	173.2°	2.7°

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
2026-04-16 00:00 UT   14 01 37.1   -04 42 22     1.544    2.541  171.6    3.3   231   10.2 
2026-04-16 20:28 UT   14 00 41.5   -04 43 05     1.543    2.541  172.2    3.1   225   10.2 
2026-04-17 00:00 UT   14 00 31.9   -04 43 12     1.543    2.541  172.3    3.0   224   10.2 
2026-04-18 00:00 UT   13 59 26.4   -04 44 06     1.543    2.542  172.8    2.8   215   10.2 
2026-04-19 00:00 UT   13 58 20.7   -04 45 03     1.543    2.543  173.1    2.7   205   10.2 
2026-04-20 00:00 UT   13 57 15.0   -04 46 04     1.544    2.544  173.2    2.7   195   10.2 
2026-04-21 00:00 UT   13 56 09.2   -04 47 08     1.545    2.545  173.1    2.7   185   10.2 
2026-04-22 00:00 UT   13 55 03.5   -04 48 17     1.546    2.546  172.8    2.8   175   10.2 
2026-04-23 00:00 UT   13 53 57.9   -04 49 29     1.547    2.547  172.3    3.0   167   10.2 
2026-04-24 00:00 UT   13 52 52.5   -04 50 46     1.549    2.548  171.6    3.3   159   10.2 
2026-04-25 00:00 UT   13 51 47.5   -04 52 08     1.551    2.549  170.9    3.6   153   10.2 
2026-04-26 00:00 UT   13 50 42.7   -04 53 34     1.553    2.550  170.0    3.9   148   10.3 
2026-04-27 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 

    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.