(264) Libussa
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	28 Oct 2025	14.2	2.987 AU	3.721 AU	16h35m	-26°41'	37.0°	11.5°
Opposition	17 Aug 2026	11.9	2.598 AU	1.613 AU	22h15m	-28°53'	163.1°	6.5°

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
2025-10-28 00:00 UT   16 35 40.3   -26 41 33     3.721    2.987   37.0   11.5   104   14.2 
2025-10-28 01:55 UT   16 35 47.8   -26 41 50     3.721    2.987   36.9   11.5   104   14.2 
2025-10-29 00:00 UT   16 37 14.3   -26 45 16     3.728    2.986   36.3   11.4   104   14.2 
2025-10-30 00:00 UT   16 38 48.8   -26 48 57     3.735    2.985   35.7   11.2   104   14.2 
2025-10-31 00:00 UT   16 40 23.7   -26 52 36     3.741    2.984   35.1   11.0   104   14.2 
2025-11-01 00:00 UT   16 41 59.0   -26 56 12     3.748    2.983   34.4   10.8   105   14.2 
2025-11-02 00:00 UT   16 43 34.8   -26 59 46     3.754    2.981   33.8   10.7   105   14.2 
2025-11-03 00:00 UT   16 45 10.9   -27 03 17     3.761    2.980   33.2   10.5   105   14.2 
2025-11-04 00:00 UT   16 46 47.5   -27 06 45     3.767    2.979   32.5   10.3   105   14.2 
2025-11-05 00:00 UT   16 48 24.4   -27 10 11     3.773    2.978   31.9   10.1   105   14.2 
2025-11-06 00:00 UT   16 50 01.7   -27 13 34     3.779    2.977   31.3   10.0   105   14.2 
2025-11-07 00:00 UT   16 51 39.4   -27 16 55     3.785    2.976   30.7    9.8   105   14.2 
2025-11-08 00:00 UT   16 53 17.5   -27 20 12     3.791    2.975   30.0    9.6   105   14.2 
2025-11-09 00:00 UT   16 54 56.0   -27 23 27     3.796    2.973   29.4    9.4   105   14.2 
2025-11-10 00:00 UT   16 56 34.9   -27 26 39     3.802    2.972   28.8    9.2   105   14.2 
2025-11-11 00:00 UT   16 58 14.1   -27 29 48     3.807    2.971   28.2    9.1   105   14.2 
2025-11-12 00:00 UT   16 59 53.7   -27 32 53     3.812    2.970   27.6    8.9   105   14.2 
2025-11-13 00:00 UT   17 01 33.7   -27 35 56     3.817    2.969   26.9    8.7   105   14.2 
2025-11-14 00:00 UT   17 03 14.0   -27 38 56     3.822    2.968   26.3    8.5   105   14.2 
2025-11-15 00:00 UT   17 04 54.6   -27 41 53     3.827    2.966   25.7    8.3   106   14.2 
2025-11-16 00:00 UT   17 06 35.6   -27 44 46     3.831    2.965   25.1    8.1   106   14.2 
2025-11-17 00:00 UT   17 08 17.0   -27 47 36     3.836    2.964   24.5    7.9   106   14.1 
2025-11-18 00:00 UT   17 09 58.7   -27 50 23     3.840    2.963   23.9    7.8   106   14.1 
2025-11-19 00:00 UT   17 11 40.7   -27 53 07     3.844    2.962   23.2    7.6   106   14.1 
2025-11-20 00:00 UT   17 13 23.0   -27 55 48     3.848    2.960   22.6    7.4   107   14.1 

    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.