(139) Juewa
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	15 Sep 2025	13.4	2.504 AU	3.147 AU	13h59m	-19°08'	42.8°	15.8°
Opposition	19 Jul 2026	12.4	3.018 AU	2.025 AU	20h11m	-35°09'	165.2°	4.9°

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)                : 0.1701350
            a (Semimajor axis)              : 2.7851378
            i (Inclination)                 : 10.87201
            Ω (Longitude of ascending node) : 1.67162
            ω (Argument of perihelion)      : 167.27871
            M (Mean anomaly)                : 17.56544
            Epoch                           : 2025 May 05

            L (Longitude of perihelion)     : -10.82857
            B (Latitude of perihelion)      : 2.38045
            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. 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
2025-09-15 00:00 UT   13 59 33.9   -19 08 43     3.147    2.504   42.8   15.8   117   13.4 
2025-09-15 20:50 UT   14 01 03.6   -19 17 03     3.155    2.505   42.4   15.7   117   13.4 
2025-09-16 00:00 UT   14 01 17.2   -19 18 19     3.156    2.506   42.3   15.7   117   13.4 
2025-09-17 00:00 UT   14 03 00.8   -19 27 53     3.166    2.507   41.8   15.5   118   13.4 
2025-09-18 00:00 UT   14 04 44.7   -19 37 26     3.175    2.509   41.2   15.3   118   13.4 
2025-09-19 00:00 UT   14 06 29.0   -19 46 57     3.185    2.510   40.7   15.1   118   13.4 
2025-09-20 00:00 UT   14 08 13.5   -19 56 27     3.194    2.512   40.2   15.0   118   13.4 
2025-09-21 00:00 UT   14 09 58.4   -20 05 54     3.203    2.514   39.7   14.8   118   13.4 
2025-09-22 00:00 UT   14 11 43.7   -20 15 20     3.213    2.515   39.1   14.6   118   13.4 
2025-09-23 00:00 UT   14 13 29.2   -20 24 44     3.222    2.517   38.6   14.4   118   13.4 
2025-09-24 00:00 UT   14 15 15.1   -20 34 06     3.231    2.518   38.1   14.2   118   13.4 
2025-09-25 00:00 UT   14 17 01.2   -20 43 26     3.240    2.520   37.6   14.0   118   13.4 
2025-09-26 00:00 UT   14 18 47.7   -20 52 44     3.248    2.522   37.0   13.9   118   13.4 
2025-09-27 00:00 UT   14 20 34.5   -21 01 59     3.257    2.523   36.5   13.7   118   13.4 
2025-09-28 00:00 UT   14 22 21.6   -21 11 12     3.266    2.525   36.0   13.5   118   13.4 
2025-09-29 00:00 UT   14 24 08.9   -21 20 24     3.274    2.526   35.5   13.3   118   13.4 
2025-09-30 00:00 UT   14 25 56.6   -21 29 32     3.283    2.528   35.0   13.1   118   13.4 
2025-10-01 00:00 UT   14 27 44.6   -21 38 38     3.291    2.530   34.4   12.9   119   13.4 
2025-10-02 00:00 UT   14 29 32.9   -21 47 42     3.300    2.531   33.9   12.7   119   13.4 
2025-10-03 00:00 UT   14 31 21.4   -21 56 43     3.308    2.533   33.4   12.6   119   13.4 
2025-10-04 00:00 UT   14 33 10.2   -22 05 42     3.316    2.535   32.9   12.4   119   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.