(139) Juewa
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	2 Feb 2026	13.7	2.745 AU	3.464 AU	18h29m	-31°47'	37.3°	12.6°
Opposition	19 Jul 2026	12.4	3.019 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)                : 0.1702488
            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
2026-02-02 00:00 UT   18 29 32.2   -31 47 41     3.464    2.745   37.3   12.6   256   13.7 
2026-02-02 05:36 UT   18 29 58.2   -31 47 45     3.462    2.746   37.4   12.6   256   13.7 
2026-02-03 00:00 UT   18 31 23.4   -31 47 57     3.457    2.747   37.9   12.7   256   13.7 
2026-02-04 00:00 UT   18 33 14.3   -31 48 10     3.451    2.749   38.5   12.9   256   13.7 
2026-02-05 00:00 UT   18 35 04.7   -31 48 19     3.445    2.751   39.1   13.1   256   13.7 
2026-02-06 00:00 UT   18 36 54.8   -31 48 25     3.438    2.752   39.7   13.2   256   13.7 
2026-02-07 00:00 UT   18 38 44.4   -31 48 28     3.431    2.754   40.3   13.4   256   13.7 
2026-02-08 00:00 UT   18 40 33.7   -31 48 28     3.424    2.756   40.9   13.6   256   13.7 
2026-02-09 00:00 UT   18 42 22.5   -31 48 25     3.417    2.758   41.5   13.7   256   13.7 
2026-02-10 00:00 UT   18 44 10.8   -31 48 19     3.410    2.760   42.2   13.9   256   13.7 
2026-02-11 00:00 UT   18 45 58.8   -31 48 10     3.403    2.761   42.8   14.0   256   13.7 
2026-02-12 00:00 UT   18 47 46.2   -31 47 58     3.396    2.763   43.4   14.2   256   13.7 
2026-02-13 00:00 UT   18 49 33.2   -31 47 44     3.389    2.765   44.0   14.4   256   13.7 
2026-02-14 00:00 UT   18 51 19.8   -31 47 27     3.381    2.767   44.6   14.5   256   13.7 
2026-02-15 00:00 UT   18 53 05.8   -31 47 07     3.373    2.768   45.2   14.7   256   13.7 
2026-02-16 00:00 UT   18 54 51.4   -31 46 45     3.366    2.770   45.9   14.8   256   13.7 
2026-02-17 00:00 UT   18 56 36.4   -31 46 20     3.358    2.772   46.5   15.0   256   13.7 
2026-02-18 00:00 UT   18 58 21.0   -31 45 54     3.350    2.774   47.1   15.1   256   13.7 
2026-02-19 00:00 UT   19 00 05.0   -31 45 25     3.342    2.775   47.7   15.3   256   13.7 
2026-02-20 00:00 UT   19 01 48.5   -31 44 53     3.334    2.777   48.4   15.4   256   13.7 
2026-02-21 00:00 UT   19 03 31.5   -31 44 20     3.326    2.779   49.0   15.6   256   13.7 
2026-02-22 00:00 UT   19 05 13.9   -31 43 45     3.317    2.781   49.6   15.7   256   13.7 
2026-02-23 00:00 UT   19 06 55.8   -31 43 08     3.309    2.782   50.3   15.9   256   13.7 
2026-02-24 00:00 UT   19 08 37.1   -31 42 29     3.300    2.784   50.9   16.0   256   13.7 

    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.