A899 XA
ephemeris date magn radius delta ra dec elong phase
Today31 Jan 202312.22.848 AU2.645 AU02h47m+08°22'91.6°20.2°
Opposition6 Feb 202411.22.986 AU2.029 AU09h42m+31°44'163.1°5.5°
A899 XA - 2023-01-31
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 A899 XA are:

            e (Eccentricity)                : 0.0708974
            a (Semimajor axis)              : 3.0646510
            i (Inclination)                 : 15.20085
            Ω (Longitude of ascending node) : 89.02366
            ω (Argument of perihelion)      : 336.31514
            M (Mean anomaly)                : 324.68773
            Epoch                           : 2022 Aug 09

            L (Longitude of perihelion)     : 66.08039
            B (Latitude of perihelion)      : -6.04610
            P (Orbital period in years)     : 5.37            
        

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. A more printer-friendly version of the same chart can be found below.




Ephemerides:
Date       Time       RA (2000)    DEC (2000)    delta   radius  elong  phase   PA    magn
2023-01-31 00:00 UT   02 47 54.8   +08 22 12     2.645    2.848   91.6   20.2    72   12.2 
2023-01-31 22:45 UT   02 48 32.1   +08 30 34     2.658    2.848   90.8   20.2    73   12.2 
2023-02-01 00:00 UT   02 48 34.2   +08 31 01     2.658    2.848   90.8   20.2    73   12.2 
2023-02-02 00:00 UT   02 49 14.7   +08 39 52     2.672    2.848   90.0   20.2    73   12.3 
2023-02-03 00:00 UT   02 49 56.2   +08 48 44     2.686    2.848   89.2   20.2    73   12.3 
2023-02-04 00:00 UT   02 50 38.8   +08 57 36     2.699    2.848   88.4   20.2    73   12.3 
2023-02-05 00:00 UT   02 51 22.4   +09 06 30     2.713    2.848   87.6   20.2    73   12.3 
2023-02-06 00:00 UT   02 52 07.1   +09 15 24     2.727    2.848   86.8   20.2    73   12.3 
2023-02-07 00:00 UT   02 52 52.7   +09 24 18     2.741    2.848   86.0   20.2    74   12.3 
2023-02-08 00:00 UT   02 53 39.4   +09 33 13     2.754    2.847   85.2   20.2    74   12.3 
2023-02-09 00:00 UT   02 54 27.0   +09 42 08     2.768    2.847   84.5   20.2    74   12.3 
2023-02-10 00:00 UT   02 55 15.6   +09 51 04     2.782    2.847   83.7   20.1    74   12.3 
2023-02-11 00:00 UT   02 56 05.1   +09 59 60     2.795    2.847   82.9   20.1    74   12.3 
2023-02-12 00:00 UT   02 56 55.6   +10 08 56     2.809    2.847   82.2   20.1    74   12.4 
2023-02-13 00:00 UT   02 57 47.0   +10 17 52     2.822    2.847   81.4   20.0    74   12.4 
2023-02-14 00:00 UT   02 58 39.3   +10 26 48     2.836    2.847   80.6   20.0    74   12.4 
2023-02-15 00:00 UT   02 59 32.5   +10 35 44     2.850    2.847   79.9   20.0    75   12.4 
2023-02-16 00:00 UT   03 00 26.7   +10 44 40     2.863    2.847   79.1   19.9    75   12.4 
2023-02-17 00:00 UT   03 01 21.7   +10 53 35     2.877    2.847   78.4   19.9    75   12.4 
2023-02-18 00:00 UT   03 02 17.6   +11 02 31     2.890    2.847   77.6   19.8    75   12.4 
2023-02-19 00:00 UT   03 03 14.4   +11 11 26     2.904    2.847   76.9   19.8    75   12.4 
2023-02-20 00:00 UT   03 04 12.0   +11 20 20     2.917    2.847   76.2   19.7    75   12.4 
2023-02-21 00:00 UT   03 05 10.5   +11 29 14     2.930    2.847   75.4   19.6    75   12.4 
2023-02-22 00:00 UT   03 06 09.8   +11 38 08     2.944    2.847   74.7   19.6    76   12.4 
2023-02-23 00:00 UT   03 07 09.9   +11 47 00     2.957    2.847   74.0   19.5    76   12.5 
2023-02-24 00:00 UT   03 08 10.8   +11 55 52     2.970    2.847   73.2   19.4    76   12.5 
2023-02-25 00:00 UT   03 09 12.6   +12 04 43     2.984    2.847   72.5   19.4    76   12.5 
2023-02-26 00:00 UT   03 10 15.1   +12 13 33     2.997    2.847   71.8   19.3    76   12.5 
2023-02-27 00:00 UT   03 11 18.3   +12 22 22     3.010    2.847   71.1   19.2    76   12.5 
2023-02-28 00:00 UT   03 12 22.4   +12 31 11     3.023    2.848   70.4   19.1    76   12.5 
2023-03-01 00:00 UT   03 13 27.2   +12 39 57     3.036    2.848   69.7   19.0    77   12.5 
2023-03-02 00:00 UT   03 14 32.7   +12 48 43     3.049    2.848   69.0   19.0    77   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.