(165) Loreley
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	15 Sep 2025	13.1	2.866 AU	2.537 AU	18h03m	-25°58'	98.7°	20.3°
Opposition	29 Sep 2026	12.2	3.062 AU	2.083 AU	00h01m	+16°34'	164.9°	4.9°

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 Loreley are:

            e (Eccentricity)                : 0.0835185
            a (Semimajor axis)              : 3.1267942
            i (Inclination)                 : 11.23383
            Ω (Longitude of ascending node) : 302.42697
            ω (Argument of perihelion)      : 344.47441
            M (Mean anomaly)                : 15.25042
            Epoch                           : 2025 Nov 21

            L (Longitude of perihelion)     : 287.18488
            B (Latitude of perihelion)      : -2.98907
            P (Orbital period in years)     : 5.53            
        

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
2025-09-15 00:00 UT   18 03 13.1   -25 58 30     2.537    2.866   98.7   20.3    89   13.1 
2025-09-15 07:37 UT   18 03 27.4   -25 57 22     2.541    2.866   98.4   20.3    89   13.1 
2025-09-16 00:00 UT   18 03 58.6   -25 54 55     2.550    2.866   97.9   20.3    89   13.1 
2025-09-17 00:00 UT   18 04 45.2   -25 51 21     2.564    2.866   97.1   20.4    89   13.2 
2025-09-18 00:00 UT   18 05 33.0   -25 47 48     2.577    2.866   96.3   20.4    89   13.2 
2025-09-19 00:00 UT   18 06 21.8   -25 44 16     2.591    2.866   95.5   20.4    89   13.2 
2025-09-20 00:00 UT   18 07 11.7   -25 40 45     2.604    2.866   94.7   20.4    89   13.2 
2025-09-21 00:00 UT   18 08 02.7   -25 37 14     2.618    2.867   93.9   20.5    89   13.2 
2025-09-22 00:00 UT   18 08 54.8   -25 33 44     2.631    2.867   93.1   20.5    89   13.2 
2025-09-23 00:00 UT   18 09 47.9   -25 30 15     2.645    2.867   92.3   20.5    89   13.2 
2025-09-24 00:00 UT   18 10 42.1   -25 26 46     2.658    2.867   91.6   20.5    89   13.2 
2025-09-25 00:00 UT   18 11 37.2   -25 23 18     2.672    2.867   90.8   20.5    89   13.2 
2025-09-26 00:00 UT   18 12 33.3   -25 19 50     2.685    2.867   90.0   20.5    89   13.3 
2025-09-27 00:00 UT   18 13 30.4   -25 16 22     2.699    2.867   89.3   20.5    89   13.3 
2025-09-28 00:00 UT   18 14 28.5   -25 12 54     2.713    2.867   88.5   20.5    89   13.3 
2025-09-29 00:00 UT   18 15 27.5   -25 09 27     2.726    2.867   87.7   20.4    89   13.3 
2025-09-30 00:00 UT   18 16 27.4   -25 05 59     2.740    2.867   87.0   20.4    88   13.3 
2025-10-01 00:00 UT   18 17 28.3   -25 02 32     2.753    2.867   86.2   20.4    88   13.3 
2025-10-02 00:00 UT   18 18 30.0   -24 59 04     2.767    2.868   85.5   20.4    88   13.3 
2025-10-03 00:00 UT   18 19 32.6   -24 55 37     2.781    2.868   84.7   20.3    88   13.3 
2025-10-04 00:00 UT   18 20 36.0   -24 52 08     2.794    2.868   84.0   20.3    88   13.3 
2025-10-05 00:00 UT   18 21 40.3   -24 48 40     2.808    2.868   83.3   20.3    88   13.3 
2025-10-06 00:00 UT   18 22 45.4   -24 45 11     2.821    2.868   82.5   20.2    88   13.4 
2025-10-07 00:00 UT   18 23 51.3   -24 41 42     2.835    2.868   81.8   20.2    88   13.4 
2025-10-08 00:00 UT   18 24 58.1   -24 38 12     2.848    2.868   81.1   20.1    88   13.4 
2025-10-09 00:00 UT   18 26 05.6   -24 34 41     2.862    2.868   80.3   20.1    88   13.4 
2025-10-10 00:00 UT   18 27 13.8   -24 31 10     2.875    2.868   79.6   20.0    88   13.4 
2025-10-11 00:00 UT   18 28 22.8   -24 27 38     2.889    2.869   78.9   20.0    87   13.4 
2025-10-12 00:00 UT   18 29 32.6   -24 24 05     2.902    2.869   78.2   19.9    87   13.4 
2025-10-13 00:00 UT   18 30 43.1   -24 20 31     2.915    2.869   77.4   19.8    87   13.4 
2025-10-14 00:00 UT   18 31 54.3   -24 16 55     2.929    2.869   76.7   19.8    87   13.4 
2025-10-15 00:00 UT   18 33 06.2   -24 13 19     2.942    2.869   76.0   19.7    87   13.4 

    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.