(54) Alexandra
ephemeris date magn radius delta ra dec elong phase
Today11 Jan 202612.93.232 AU2.342 AU09h31m+15°05'150.0°8.7°
Opposition4 Feb 202612.33.219 AU2.233 AU09h10m+15°36'179.3°0.2°
(54) Alexandra - 2026-01-11
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 Alexandra are:

            e (Eccentricity)                : 0.1983043
            a (Semimajor axis)              : 2.7125759
            i (Inclination)                 : 11.83053
            Ω (Longitude of ascending node) : 313.01276
            ω (Argument of perihelion)      : 346.19148
            M (Mean anomaly)                : 186.82265
            Epoch                           : 2025 Nov 21

            L (Longitude of perihelion)     : 299.48667
            B (Latitude of perihelion)      : -2.80478
            P (Orbital period in years)     : 4.47            
        

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
2026-01-11 00:00 UT   09 31 34.3   +15 05 06     2.342    3.232  150.0    8.7   288   12.9 
2026-01-11 05:04 UT   09 31 25.3   +15 05 16     2.341    3.232  150.3    8.7   288   12.9 
2026-01-12 00:00 UT   09 30 51.5   +15 05 54     2.335    3.231  151.2    8.4   288   12.9 
2026-01-13 00:00 UT   09 30 07.6   +15 06 45     2.327    3.231  152.4    8.1   288   12.9 
2026-01-14 00:00 UT   09 29 22.5   +15 07 40     2.320    3.231  153.6    7.8   288   12.9 
2026-01-15 00:00 UT   09 28 36.4   +15 08 39     2.313    3.230  154.8    7.4   288   12.9 
2026-01-16 00:00 UT   09 27 49.3   +15 09 41     2.306    3.230  156.0    7.1   288   12.8 
2026-01-17 00:00 UT   09 27 01.2   +15 10 46     2.299    3.229  157.2    6.8   288   12.8 
2026-01-18 00:00 UT   09 26 12.1   +15 11 54     2.293    3.229  158.4    6.4   288   12.8 
2026-01-19 00:00 UT   09 25 22.1   +15 13 04     2.287    3.228  159.7    6.1   288   12.8 
2026-01-20 00:00 UT   09 24 31.2   +15 14 17     2.282    3.228  160.9    5.7   288   12.7 
2026-01-21 00:00 UT   09 23 39.5   +15 15 33     2.276    3.227  162.1    5.4   288   12.7 
2026-01-22 00:00 UT   09 22 47.0   +15 16 50     2.271    3.227  163.3    5.0   288   12.7 
2026-01-23 00:00 UT   09 21 53.7   +15 18 10     2.267    3.226  164.5    4.7   288   12.7 
2026-01-24 00:00 UT   09 20 59.8   +15 19 31     2.262    3.226  165.8    4.3   288   12.6 
2026-01-25 00:00 UT   09 20 05.2   +15 20 54     2.258    3.225  167.0    3.9   289   12.6 
2026-01-26 00:00 UT   09 19 10.0   +15 22 18     2.254    3.224  168.2    3.6   289   12.6 
2026-01-27 00:00 UT   09 18 14.3   +15 23 44     2.251    3.224  169.5    3.2   289   12.6 
2026-01-28 00:00 UT   09 17 18.0   +15 25 10     2.248    3.223  170.7    2.8   290   12.5 
2026-01-29 00:00 UT   09 16 21.4   +15 26 37     2.245    3.223  172.0    2.5   290   12.5 
2026-01-30 00:00 UT   09 15 24.3   +15 28 05     2.242    3.222  173.2    2.1   291   12.5 
2026-01-31 00:00 UT   09 14 26.9   +15 29 33     2.240    3.222  174.4    1.7   292   12.5 
2026-02-01 00:00 UT   09 13 29.2   +15 31 01     2.238    3.221  175.7    1.3   294   12.4 
2026-02-02 00:00 UT   09 12 31.3   +15 32 29     2.236    3.221  176.9    1.0   298   12.4 
2026-02-03 00:00 UT   09 11 33.2   +15 33 57     2.235    3.220  178.1    0.6   306   12.3 
2026-02-04 00:00 UT   09 10 35.0   +15 35 25     2.234    3.219  179.1    0.3   336   12.3 
2026-02-05 00:00 UT   09 09 36.7   +15 36 53     2.233    3.219  179.0    0.3    60   12.3 
2026-02-06 00:00 UT   09 08 38.4   +15 38 19     2.233    3.218  177.9    0.6    86   12.3 
2026-02-07 00:00 UT   09 07 40.1   +15 39 45     2.233    3.218  176.7    1.0    93   12.4 
2026-02-08 00:00 UT   09 06 41.8   +15 41 10     2.233    3.217  175.5    1.4    96   12.4 
2026-02-09 00:00 UT   09 05 43.8   +15 42 33     2.233    3.216  174.3    1.7    98   12.5 
2026-02-10 00:00 UT   09 04 45.9   +15 43 56     2.234    3.216  173.1    2.1    99   12.5 


    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.