(264) Libussa
ephemeris date magn radius delta ra dec elong phase
Today2 Dec 202514.02.946 AU3.885 AU17h34m-28°23'15.5°5.1°
Opposition17 Aug 202611.92.598 AU1.613 AU22h15m-28°53'163.1°6.5°
(264) Libussa - 2025-12-02
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 Libussa are:

            e (Eccentricity)                : 0.1350899
            a (Semimajor axis)              : 2.7991204
            i (Inclination)                 : 10.42509
            Ω (Longitude of ascending node) : 49.49047
            ω (Argument of perihelion)      : 340.01203
            M (Mean anomaly)                : 251.94773
            Epoch                           : 2025 Nov 21

            L (Longitude of perihelion)     : 29.80691
            B (Latitude of perihelion)      : -3.54617
            P (Orbital period in years)     : 4.68            
        

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
2025-12-02 00:00 UT   17 34 13.2   -28 23 22     3.885    2.946   15.5    5.1   111   14.0 
2025-12-02 05:03 UT   17 34 35.5   -28 23 46     3.885    2.946   15.3    5.1   111   14.0 
2025-12-03 00:00 UT   17 35 59.1   -28 25 16     3.887    2.945   14.9    4.9   112   14.0 
2025-12-04 00:00 UT   17 37 45.1   -28 27 07     3.889    2.944   14.3    4.7   113   14.0 
2025-12-05 00:00 UT   17 39 31.4   -28 28 54     3.891    2.942   13.7    4.6   114   14.0 
2025-12-06 00:00 UT   17 41 18.0   -28 30 37     3.892    2.941   13.2    4.4   115   14.0 
2025-12-07 00:00 UT   17 43 04.7   -28 32 16     3.894    2.940   12.6    4.2   116   14.0 
2025-12-08 00:00 UT   17 44 51.6   -28 33 51     3.895    2.939   12.0    4.0   117   14.0 
2025-12-09 00:00 UT   17 46 38.8   -28 35 23     3.896    2.938   11.5    3.8   118   14.0 
2025-12-10 00:00 UT   17 48 26.1   -28 36 50     3.897    2.936   10.9    3.7   119   13.9 
2025-12-11 00:00 UT   17 50 13.7   -28 38 14     3.898    2.935   10.4    3.5   121   13.9 
2025-12-12 00:00 UT   17 52 01.4   -28 39 34     3.899    2.934    9.9    3.3   123   13.9 
2025-12-13 00:00 UT   17 53 49.3   -28 40 50     3.900    2.933    9.4    3.1   124   13.9 
2025-12-14 00:00 UT   17 55 37.4   -28 42 02     3.900    2.931    8.9    3.0   127   13.9 
2025-12-15 00:00 UT   17 57 25.7   -28 43 10     3.900    2.930    8.4    2.8   129   13.9 
2025-12-16 00:00 UT   17 59 14.1   -28 44 14     3.901    2.929    7.9    2.7   132   13.9 
2025-12-17 00:00 UT   18 01 02.7   -28 45 14     3.901    2.928    7.5    2.5   135   13.9 
2025-12-18 00:00 UT   18 02 51.5   -28 46 10     3.900    2.926    7.1    2.4   138   13.9 
2025-12-19 00:00 UT   18 04 40.3   -28 47 02     3.900    2.925    6.7    2.3   142   13.9 
2025-12-20 00:00 UT   18 06 29.4   -28 47 50     3.900    2.924    6.4    2.1   147   13.8 
2025-12-21 00:00 UT   18 08 18.5   -28 48 34     3.899    2.923    6.1    2.0   151   13.8 
2025-12-22 00:00 UT   18 10 07.8   -28 49 13     3.898    2.921    5.8    2.0   157   13.8 
2025-12-23 00:00 UT   18 11 57.2   -28 49 49     3.897    2.920    5.6    1.9   162   13.8 


    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.