(139) Juewa
ephemeris date magn radius delta ra dec elong phase
Today4 Dec 202513.22.639 AU3.613 AU16h31m-29°20'7.5°2.8°
Opposition19 Jul 202612.43.019 AU2.025 AU20h11m-35°09'165.2°4.9°
(139) Juewa - 2025-12-04
astro.vanbuitenen.nl


 
-1 year
-1 month
-1 day
Now
+1 day
+1 month
+1 year

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 Juewa are:

            e (Eccentricity)                : 0.1702488
            a (Semimajor axis)              : 2.7856237
            i (Inclination)                 : 10.87123
            Ω (Longitude of ascending node) : 1.66763
            ω (Argument of perihelion)      : 167.31766
            M (Mean anomaly)                : 59.93276
            Epoch                           : 2025 Nov 21

            L (Longitude of perihelion)     : -10.79428
            B (Latitude of perihelion)      : 2.37311
            P (Orbital period in years)     : 4.65            
        

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
2025-12-04 00:00 UT   16 31 10.5   -29 20 10     3.613    2.639    7.5    2.8   197   13.2 
2025-12-04 23:15 UT   16 33 07.5   -29 24 51     3.614    2.640    7.6    2.8   201   13.2 
2025-12-05 00:00 UT   16 33 11.3   -29 24 60     3.614    2.641    7.6    2.8   201   13.2 
2025-12-06 00:00 UT   16 35 12.2   -29 29 45     3.615    2.642    7.7    2.9   205   13.2 
2025-12-07 00:00 UT   16 37 13.0   -29 34 26     3.616    2.644    7.9    3.0   209   13.3 
2025-12-08 00:00 UT   16 39 14.0   -29 39 01     3.617    2.646    8.2    3.0   213   13.3 
2025-12-09 00:00 UT   16 41 14.9   -29 43 32     3.618    2.648    8.4    3.1   216   13.3 
2025-12-10 00:00 UT   16 43 15.9   -29 47 57     3.619    2.649    8.7    3.2   219   13.3 
2025-12-11 00:00 UT   16 45 17.0   -29 52 17     3.619    2.651    9.0    3.3   222   13.3 
2025-12-12 00:00 UT   16 47 18.0   -29 56 33     3.619    2.653    9.4    3.5   224   13.3 
2025-12-13 00:00 UT   16 49 19.1   -30 00 43     3.620    2.655    9.8    3.6   227   13.3 
2025-12-14 00:00 UT   16 51 20.1   -30 04 49     3.620    2.656   10.1    3.7   229   13.3 
2025-12-15 00:00 UT   16 53 21.2   -30 08 49     3.620    2.658   10.5    3.9   231   13.3 
2025-12-16 00:00 UT   16 55 22.2   -30 12 44     3.620    2.660   11.0    4.0   233   13.3 
2025-12-17 00:00 UT   16 57 23.3   -30 16 34     3.619    2.662   11.4    4.2   235   13.3 
2025-12-18 00:00 UT   16 59 24.3   -30 20 20     3.619    2.664   11.8    4.3   236   13.4 
2025-12-19 00:00 UT   17 01 25.2   -30 23 60     3.618    2.665   12.3    4.5   238   13.4 
2025-12-20 00:00 UT   17 03 26.2   -30 27 35     3.618    2.667   12.8    4.7   239   13.4 
2025-12-21 00:00 UT   17 05 27.0   -30 31 05     3.617    2.669   13.2    4.8   241   13.4 
2025-12-22 00:00 UT   17 07 27.9   -30 34 30     3.616    2.671   13.7    5.0   242   13.4 
2025-12-23 00:00 UT   17 09 28.6   -30 37 50     3.615    2.672   14.2    5.2   243   13.4 


    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.