(13) Egeria
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Opposition	2 Dec 2024	10.1	2.427 AU	1.457 AU	04h28m	+35°03'	166.9°	5.3°
Today	22 Jan 2025	11.0	2.395 AU	1.743 AU	03h51m	+35°45'	120.3°	20.8°

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)                : 0.0854027
            a (Semimajor axis)              : 2.5777354
            i (Inclination)                 : 16.53187
            Ω (Longitude of ascending node) : 43.20800
            ω (Argument of perihelion)      : 79.22238
            M (Mean anomaly)                : 305.54672
            Epoch                           : 2024 Oct 17

            L (Longitude of perihelion)     : 121.97722
            B (Latitude of perihelion)      : 16.23211
            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. 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
2025-01-22 00:00 UT   03 51 12.8   +35 45 42     1.743    2.395  120.3   20.8    86   11.0 
2025-01-22 04:58 UT   03 51 14.7   +35 45 38     1.745    2.395  120.1   20.8    86   11.0 
2025-01-23 00:00 UT   03 51 23.2   +35 45 23     1.753    2.395  119.4   21.0    86   11.1 
2025-01-24 00:00 UT   03 51 35.9   +35 45 06     1.764    2.394  118.4   21.2    86   11.1 
2025-01-25 00:00 UT   03 51 50.8   +35 44 52     1.774    2.394  117.5   21.4    86   11.1 
2025-01-26 00:00 UT   03 52 08.0   +35 44 40     1.785    2.393  116.6   21.6    85   11.1 
2025-01-27 00:00 UT   03 52 27.3   +35 44 30     1.795    2.393  115.7   21.8    85   11.1 
2025-01-28 00:00 UT   03 52 48.8   +35 44 23     1.806    2.392  114.8   21.9    85   11.1 
2025-01-29 00:00 UT   03 53 12.4   +35 44 18     1.817    2.392  113.9   22.1    84   11.2 
2025-01-30 00:00 UT   03 53 38.2   +35 44 16     1.828    2.391  113.0   22.3    84   11.2 
2025-01-31 00:00 UT   03 54 06.1   +35 44 16     1.839    2.391  112.1   22.4    84   11.2 
2025-02-01 00:00 UT   03 54 36.0   +35 44 20     1.850    2.390  111.2   22.6    84   11.2 
2025-02-02 00:00 UT   03 55 08.0   +35 44 26     1.861    2.390  110.4   22.7    83   11.2 
2025-02-03 00:00 UT   03 55 42.1   +35 44 35     1.872    2.389  109.5   22.9    83   11.3 
2025-02-04 00:00 UT   03 56 18.1   +35 44 46     1.883    2.389  108.7   23.0    83   11.3 
2025-02-05 00:00 UT   03 56 56.1   +35 45 01     1.894    2.388  107.8   23.1    83   11.3 
2025-02-06 00:00 UT   03 57 36.0   +35 45 18     1.906    2.388  107.0   23.3    83   11.3 
2025-02-07 00:00 UT   03 58 17.8   +35 45 38     1.917    2.387  106.1   23.4    82   11.3 
2025-02-08 00:00 UT   03 59 01.6   +35 46 01     1.928    2.387  105.3   23.5    82   11.3 
2025-02-09 00:00 UT   03 59 47.1   +35 46 26     1.940    2.386  104.5   23.6    82   11.3 
2025-02-10 00:00 UT   04 00 34.5   +35 46 54     1.951    2.386  103.7   23.7    82   11.4 
2025-02-11 00:00 UT   04 01 23.7   +35 47 24     1.963    2.385  102.9   23.8    82   11.4 
2025-02-12 00:00 UT   04 02 14.6   +35 47 57     1.974    2.385  102.1   23.9    82   11.4 
2025-02-13 00:00 UT   04 03 07.2   +35 48 32     1.986    2.384  101.3   24.0    81   11.4 
2025-02-14 00:00 UT   04 04 01.6   +35 49 10     1.998    2.384  100.5   24.0    81   11.4 
2025-02-15 00:00 UT   04 04 57.7   +35 49 50     2.009    2.383   99.7   24.1    81   11.4 
2025-02-16 00:00 UT   04 05 55.4   +35 50 32     2.021    2.383   98.9   24.2    81   11.5 
2025-02-17 00:00 UT   04 06 54.7   +35 51 16     2.033    2.382   98.1   24.2    81   11.5 
2025-02-18 00:00 UT   04 07 55.7   +35 52 02     2.044    2.382   97.4   24.3    81   11.5 
2025-02-19 00:00 UT   04 08 58.3   +35 52 51     2.056    2.381   96.6   24.4    81   11.5 
2025-02-20 00:00 UT   04 10 02.4   +35 53 41     2.068    2.381   95.8   24.4    81   11.5 
2025-02-21 00:00 UT   04 11 08.0   +35 54 32     2.080    2.381   95.1   24.4    80   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.