(54) Alexandra
ephemeris date magn radius delta ra dec elong phase
Today9 May 202613.83.141 AU3.100 AU08h50m+14°06'83.0°18.6°
Opposition1 May 202711.42.507 AU1.535 AU14h04m-33°28'160.4°7.7°
(54) Alexandra - 2026-05-09
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)      : 346.19149
            M (Mean anomaly)                : 186.82265
            Epoch                           : 2025 Nov 21

            L (Longitude of perihelion)     : 299.48668
            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
2026-05-09 00:00 UT   08 50 01.3   +14 06 33     3.100    3.141   83.0   18.6   106   13.8 
2026-05-09 11:26 UT   08 50 21.2   +14 04 43     3.106    3.140   82.6   18.6   106   13.8 
2026-05-10 00:00 UT   08 50 43.3   +14 02 42     3.113    3.140   82.2   18.6   106   13.8 
2026-05-11 00:00 UT   08 51 26.1   +13 58 47     3.126    3.139   81.5   18.6   106   13.9 
2026-05-12 00:00 UT   08 52 09.7   +13 54 49     3.139    3.138   80.7   18.5   106   13.9 
2026-05-13 00:00 UT   08 52 54.2   +13 50 47     3.152    3.136   79.9   18.5   106   13.9 
2026-05-14 00:00 UT   08 53 39.4   +13 46 42     3.165    3.135   79.1   18.5   107   13.9 
2026-05-15 00:00 UT   08 54 25.4   +13 42 32     3.178    3.134   78.4   18.4   107   13.9 
2026-05-16 00:00 UT   08 55 12.2   +13 38 19     3.191    3.133   77.6   18.4   107   13.9 
2026-05-17 00:00 UT   08 55 59.7   +13 34 03     3.203    3.132   76.8   18.3   107   13.9 
2026-05-18 00:00 UT   08 56 48.0   +13 29 43     3.216    3.131   76.1   18.3   107   13.9 
2026-05-19 00:00 UT   08 57 37.1   +13 25 19     3.229    3.130   75.3   18.2   107   13.9 
2026-05-20 00:00 UT   08 58 26.8   +13 20 51     3.241    3.129   74.6   18.2   107   13.9 
2026-05-21 00:00 UT   08 59 17.3   +13 16 20     3.254    3.128   73.9   18.1   107   13.9 
2026-05-22 00:00 UT   09 00 08.4   +13 11 45     3.267    3.126   73.1   18.0   107   13.9 
2026-05-23 00:00 UT   09 01 00.2   +13 07 07     3.279    3.125   72.4   18.0   108   13.9 
2026-05-24 00:00 UT   09 01 52.7   +13 02 25     3.291    3.124   71.6   17.9   108   13.9 
2026-05-25 00:00 UT   09 02 45.8   +12 57 40     3.304    3.123   70.9   17.8   108   13.9 
2026-05-26 00:00 UT   09 03 39.6   +12 52 51     3.316    3.122   70.2   17.8   108   13.9 
2026-05-27 00:00 UT   09 04 34.0   +12 47 58     3.328    3.121   69.5   17.7   108   13.9 
2026-05-28 00:00 UT   09 05 29.0   +12 43 02     3.340    3.119   68.8   17.6   108   14.0 
2026-05-29 00:00 UT   09 06 24.5   +12 38 02     3.352    3.118   68.0   17.5   108   14.0 
2026-05-30 00:00 UT   09 07 20.7   +12 32 59     3.364    3.117   67.3   17.5   108   14.0 
2026-05-31 00:00 UT   09 08 17.5   +12 27 52     3.376    3.116   66.6   17.4   109   14.0 
2026-06-01 00:00 UT   09 09 14.8   +12 22 41     3.388    3.115   65.9   17.3   109   14.0 
2026-06-02 00:00 UT   09 10 12.7   +12 17 27     3.400    3.113   65.2   17.2   109   14.0 
2026-06-03 00:00 UT   09 11 11.1   +12 12 10     3.411    3.112   64.5   17.1   109   14.0 
2026-06-04 00:00 UT   09 12 10.0   +12 06 49     3.423    3.111   63.8   17.0   109   14.0 
2026-06-05 00:00 UT   09 13 09.5   +12 01 25     3.434    3.110   63.1   16.9   109   14.0 
2026-06-06 00:00 UT   09 14 09.5   +11 55 57     3.446    3.109   62.4   16.8   109   14.0 
2026-06-07 00:00 UT   09 15 10.0   +11 50 25     3.457    3.107   61.7   16.7   110   14.0 
2026-06-08 00:00 UT   09 16 11.1   +11 44 50     3.468    3.106   61.0   16.6   110   14.0 


    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.