(11) Parthenope
ephemeris date magn radius delta ra dec elong phase
Today30 Oct 202611.72.512 AU3.501 AU14h09m-09°32'4.3°1.7°
Opposition30 Jun 20279.22.261 AU1.246 AU18h38m-19°20'176.1°1.8°
(11) Parthenope - 2026-10-30
astro.vanbuitenen.nl


 
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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 Parthenope are:

            e (Eccentricity)                : 0.1008882
            a (Semimajor axis)              : 2.4522592
            i (Inclination)                 : 4.63618
            Ω (Longitude of ascending node) : 125.46946
            ω (Argument of perihelion)      : 196.45557
            M (Mean anomaly)                : 224.94245
            Epoch                           : 2026 Jun 09

            L (Longitude of perihelion)     : 141.87409
            B (Latitude of perihelion)      : -1.31198
            P (Orbital period in years)     : 3.84            
        

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
2026-10-30 00:00 UT   14 09 33.6   -09 32 58     3.501    2.512    4.3    1.7   340   11.7 
2026-10-30 03:15 UT   14 09 47.9   -09 34 13     3.501    2.512    4.3    1.7   339   11.7 
2026-10-31 00:00 UT   14 11 18.7   -09 42 07     3.499    2.511    4.7    1.8   335   11.7 
2026-11-01 00:00 UT   14 13 04.0   -09 51 14     3.497    2.510    5.1    2.0   330   11.7 
2026-11-02 00:00 UT   14 14 49.4   -10 00 18     3.495    2.509    5.5    2.2   327   11.7 
2026-11-03 00:00 UT   14 16 35.1   -10 09 19     3.493    2.508    5.9    2.3   323   11.7 
2026-11-04 00:00 UT   14 18 20.9   -10 18 17     3.490    2.507    6.4    2.5   320   11.7 
2026-11-05 00:00 UT   14 20 06.9   -10 27 13     3.488    2.506    6.8    2.7   318   11.7 
2026-11-06 00:00 UT   14 21 53.1   -10 36 06     3.485    2.505    7.3    2.9   316   11.7 
2026-11-07 00:00 UT   14 23 39.4   -10 44 56     3.482    2.504    7.8    3.1   314   11.7 
2026-11-08 00:00 UT   14 25 26.0   -10 53 43     3.479    2.502    8.3    3.3   312   11.8 
2026-11-09 00:00 UT   14 27 12.7   -11 02 27     3.476    2.501    8.8    3.5   311   11.8 
2026-11-10 00:00 UT   14 28 59.5   -11 11 08     3.473    2.500    9.3    3.7   309   11.8 
2026-11-11 00:00 UT   14 30 46.6   -11 19 46     3.469    2.499    9.8    3.9   308   11.8 
2026-11-12 00:00 UT   14 32 33.7   -11 28 20     3.466    2.498   10.3    4.1   307   11.8 
2026-11-13 00:00 UT   14 34 21.1   -11 36 51     3.462    2.497   10.8    4.3   306   11.8 
2026-11-14 00:00 UT   14 36 08.6   -11 45 20     3.459    2.496   11.4    4.5   305   11.8 
2026-11-15 00:00 UT   14 37 56.2   -11 53 44     3.455    2.495   11.9    4.7   304   11.8 
2026-11-16 00:00 UT   14 39 44.1   -12 02 05     3.451    2.494   12.4    4.9   303   11.8 
2026-11-17 00:00 UT   14 41 32.0   -12 10 23     3.447    2.493   12.9    5.1   302   11.8 


    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.