(165) Loreley
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Opposition	25 Jun 2025	11.8	2.872 AU	1.862 AU	18h19m	-31°41'	171.7°	2.9°
Today	13 Jul 2025	12.0	2.869 AU	1.896 AU	18h03m	-30°37'	159.1°	7.3°

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 Loreley are:

            e (Eccentricity)                : 0.0835746
            a (Semimajor axis)              : 3.1269829
            i (Inclination)                 : 11.23313
            Ω (Longitude of ascending node) : 302.42837
            ω (Argument of perihelion)      : 344.54648
            M (Mean anomaly)                : 339.53840
            Epoch                           : 2025 May 05

            L (Longitude of perihelion)     : 287.25713
            B (Latitude of perihelion)      : -2.97534
            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
2025-07-13 00:00 UT   18 03 52.5   -30 37 45     1.896    2.869  159.1    7.3    70   12.0 
2025-07-13 09:57 UT   18 03 33.0   -30 35 57     1.898    2.869  158.7    7.4    71   12.0 
2025-07-14 00:00 UT   18 03 05.8   -30 33 24     1.901    2.869  158.1    7.6    72   12.0 
2025-07-15 00:00 UT   18 02 20.2   -30 28 59     1.905    2.869  157.0    7.9    73   12.1 
2025-07-16 00:00 UT   18 01 35.7   -30 24 31     1.910    2.868  156.0    8.3    74   12.1 
2025-07-17 00:00 UT   18 00 52.4   -30 20 01     1.915    2.868  154.9    8.6    75   12.1 
2025-07-18 00:00 UT   18 00 10.3   -30 15 28     1.920    2.868  153.9    9.0    76   12.1 
2025-07-19 00:00 UT   17 59 29.5   -30 10 52     1.926    2.868  152.9    9.3    77   12.1 
2025-07-20 00:00 UT   17 58 49.9   -30 06 15     1.932    2.868  151.8    9.6    78   12.2 
2025-07-21 00:00 UT   17 58 11.7   -30 01 35     1.938    2.868  150.8   10.0    78   12.2 
2025-07-22 00:00 UT   17 57 34.9   -29 56 53     1.944    2.868  149.7   10.3    79   12.2 
2025-07-23 00:00 UT   17 56 59.4   -29 52 10     1.951    2.868  148.7   10.6    80   12.2 
2025-07-24 00:00 UT   17 56 25.4   -29 47 26     1.957    2.867  147.6   10.9    80   12.2 
2025-07-25 00:00 UT   17 55 52.9   -29 42 40     1.964    2.867  146.6   11.2    81   12.3 
2025-07-26 00:00 UT   17 55 21.8   -29 37 54     1.972    2.867  145.6   11.6    81   12.3 
2025-07-27 00:00 UT   17 54 52.3   -29 33 06     1.979    2.867  144.5   11.9    82   12.3 
2025-07-28 00:00 UT   17 54 24.2   -29 28 18     1.986    2.867  143.5   12.2    82   12.3 
2025-07-29 00:00 UT   17 53 57.8   -29 23 30     1.994    2.867  142.5   12.5    83   12.3 
2025-07-30 00:00 UT   17 53 32.9   -29 18 42     2.002    2.867  141.4   12.7    83   12.4 
2025-07-31 00:00 UT   17 53 09.5   -29 13 53     2.010    2.867  140.4   13.0    84   12.4 
2025-08-01 00:00 UT   17 52 47.8   -29 09 05     2.019    2.867  139.4   13.3    84   12.4 
2025-08-02 00:00 UT   17 52 27.7   -29 04 17     2.027    2.867  138.4   13.6    84   12.4 
2025-08-03 00:00 UT   17 52 09.2   -28 59 29     2.036    2.867  137.4   13.9    85   12.4 
2025-08-04 00:00 UT   17 51 52.3   -28 54 42     2.045    2.866  136.4   14.1    85   12.5 
2025-08-05 00:00 UT   17 51 37.0   -28 49 56     2.054    2.866  135.4   14.4    85   12.5 
2025-08-06 00:00 UT   17 51 23.3   -28 45 11     2.064    2.866  134.4   14.6    86   12.5 
2025-08-07 00:00 UT   17 51 11.3   -28 40 27     2.073    2.866  133.4   14.9    86   12.5 
2025-08-08 00:00 UT   17 51 00.9   -28 35 43     2.083    2.866  132.4   15.1    86   12.5 
2025-08-09 00:00 UT   17 50 52.1   -28 31 01     2.092    2.866  131.5   15.4    86   12.5 
2025-08-10 00:00 UT   17 50 44.9   -28 26 21     2.102    2.866  130.5   15.6    87   12.6 
2025-08-11 00:00 UT   17 50 39.4   -28 21 42     2.113    2.866  129.5   15.8    87   12.6 
2025-08-12 00:00 UT   17 50 35.4   -28 17 04     2.123    2.866  128.6   16.1    87   12.6 

    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.