(165) Loreley
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	17 Jun 2025	11.9	2.873 AU	1.875 AU	18h27m	-32°02'	166.6°	4.7°
Opposition	25 Jun 2025	11.8	2.872 AU	1.862 AU	18h19m	-31°41'	171.7°	2.9°

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)                : 0.0835746
            a (Semimajor axis)              : 3.1269829
            i (Inclination)                 : 11.23313
            Ω (Longitude of ascending node) : 302.42837
            ω (Argument of perihelion)      : 344.54647
            M (Mean anomaly)                : 339.53840
            Epoch                           : 2025 May 05

            L (Longitude of perihelion)     : 287.25712
            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
2025-06-17 00:00 UT   18 27 31.5   -32 02 32     1.875    2.873  166.6    4.7   308   11.9 
2025-06-17 04:41 UT   18 27 20.8   -32 02 09     1.875    2.873  166.8    4.6   308   11.9 
2025-06-18 00:00 UT   18 26 36.5   -32 00 29     1.873    2.873  167.5    4.4   311   11.9 
2025-06-19 00:00 UT   18 25 41.0   -31 58 20     1.871    2.873  168.3    4.1   315   11.8 
2025-06-20 00:00 UT   18 24 45.1   -31 56 05     1.869    2.873  169.1    3.8   319   11.8 
2025-06-21 00:00 UT   18 23 48.8   -31 53 43     1.867    2.873  169.8    3.6   324   11.8 
2025-06-22 00:00 UT   18 22 52.1   -31 51 16     1.865    2.872  170.4    3.4   330   11.8 
2025-06-23 00:00 UT   18 21 55.3   -31 48 42     1.864    2.872  170.9    3.2   337   11.8 
2025-06-24 00:00 UT   18 20 58.2   -31 46 02     1.863    2.872  171.3    3.1   344   11.8 
2025-06-25 00:00 UT   18 20 01.1   -31 43 16     1.862    2.872  171.6    3.0   352   11.8 
2025-06-26 00:00 UT   18 19 04.0   -31 40 24     1.862    2.872  171.7    2.9   360   11.8 
2025-06-27 00:00 UT   18 18 06.8   -31 37 25     1.862    2.871  171.6    3.0     8   11.8 
2025-06-28 00:00 UT   18 17 09.8   -31 34 21     1.862    2.871  171.4    3.0    15   11.8 
2025-06-29 00:00 UT   18 16 13.0   -31 31 11     1.862    2.871  171.1    3.1    23   11.8 
2025-06-30 00:00 UT   18 15 16.4   -31 27 55     1.863    2.871  170.6    3.3    30   11.8 
2025-07-01 00:00 UT   18 14 20.2   -31 24 34     1.864    2.871  170.0    3.5    36   11.8 
2025-07-02 00:00 UT   18 13 24.3   -31 21 07     1.865    2.870  169.3    3.8    41   11.8 
2025-07-03 00:00 UT   18 12 28.9   -31 17 34     1.867    2.870  168.6    4.0    45   11.8 
2025-07-04 00:00 UT   18 11 34.0   -31 13 57     1.869    2.870  167.8    4.3    50   11.8 
2025-07-05 00:00 UT   18 10 39.7   -31 10 14     1.871    2.870  166.9    4.6    53   11.9 
2025-07-06 00:00 UT   18 09 46.0   -31 06 26     1.873    2.870  166.0    4.9    56   11.9 
2025-07-07 00:00 UT   18 08 53.0   -31 02 33     1.875    2.870  165.1    5.2    59   11.9 
2025-07-08 00:00 UT   18 08 00.7   -30 58 35     1.878    2.870  164.1    5.6    61   11.9 
2025-07-09 00:00 UT   18 07 09.3   -30 54 33     1.881    2.869  163.1    5.9    64   11.9 
2025-07-10 00:00 UT   18 06 18.7   -30 50 27     1.885    2.869  162.1    6.2    66   12.0 
2025-07-11 00:00 UT   18 05 29.0   -30 46 17     1.888    2.869  161.1    6.6    67   12.0 
2025-07-12 00:00 UT   18 04 40.2   -30 42 03     1.892    2.869  160.1    6.9    69   12.0 
2025-07-13 00:00 UT   18 03 52.5   -30 37 45     1.896    2.869  159.1    7.3    70   12.0 
2025-07-14 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 

    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.