(139) Juewa
ephemeris	date	magn	radius	delta	ra	dec	elong	phase
Today	30 Sep 2026	13.6	3.112 AU	2.705 AU	19h39m	-31°32'	104.5°	18.2°
Opposition	29 Sep 2027	12.4	3.232 AU	2.230 AU	00h20m	+03°29'	178.8°	0.4°

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)                : 0.1703251
            a (Semimajor axis)              : 2.7860301
            i (Inclination)                 : 10.87118
            Ω (Longitude of ascending node) : 1.66007
            ω (Argument of perihelion)      : 167.36966
            M (Mean anomaly)                : 102.27210
            Epoch                           : 2026 Jun 09

            L (Longitude of perihelion)     : -10.75069
            B (Latitude of perihelion)      : 2.36353
            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
2026-09-30 00:00 UT   19 39 03.6   -31 32 56     2.705    3.112  104.5   18.2    78   13.6 
2026-09-30 08:23 UT   19 39 12.4   -31 31 04     2.710    3.112  104.2   18.2    78   13.6 
2026-10-01 00:00 UT   19 39 29.4   -31 27 33     2.720    3.113  103.7   18.2    78   13.6 
2026-10-02 00:00 UT   19 39 56.4   -31 22 09     2.735    3.114  102.8   18.3    78   13.6 
2026-10-03 00:00 UT   19 40 24.8   -31 16 44     2.750    3.115  102.0   18.3    78   13.6 
2026-10-04 00:00 UT   19 40 54.3   -31 11 17     2.764    3.116  101.1   18.4    78   13.6 
2026-10-05 00:00 UT   19 41 25.0   -31 05 50     2.779    3.117  100.3   18.4    78   13.7 
2026-10-06 00:00 UT   19 41 57.0   -31 00 21     2.794    3.118   99.4   18.4    78   13.7 
2026-10-07 00:00 UT   19 42 30.1   -30 54 50     2.809    3.120   98.6   18.5    79   13.7 
2026-10-08 00:00 UT   19 43 04.4   -30 49 19     2.824    3.121   97.8   18.5    79   13.7 
2026-10-09 00:00 UT   19 43 39.9   -30 43 46     2.839    3.122   96.9   18.5    79   13.7 
2026-10-10 00:00 UT   19 44 16.4   -30 38 13     2.854    3.123   96.1   18.5    79   13.7 
2026-10-11 00:00 UT   19 44 54.1   -30 32 38     2.870    3.124   95.3   18.6    79   13.7 
2026-10-12 00:00 UT   19 45 32.9   -30 27 02     2.885    3.125   94.5   18.6    79   13.7 
2026-10-13 00:00 UT   19 46 12.7   -30 21 25     2.900    3.126   93.6   18.6    79   13.8 
2026-10-14 00:00 UT   19 46 53.6   -30 15 46     2.915    3.127   92.8   18.6    79   13.8 
2026-10-15 00:00 UT   19 47 35.6   -30 10 07     2.930    3.128   92.0   18.6    79   13.8 
2026-10-16 00:00 UT   19 48 18.5   -30 04 26     2.945    3.129   91.2   18.6    79   13.8 
2026-10-17 00:00 UT   19 49 02.5   -29 58 45     2.961    3.130   90.4   18.6    79   13.8 
2026-10-18 00:00 UT   19 49 47.4   -29 53 02     2.976    3.132   89.6   18.6    79   13.8 
2026-10-19 00:00 UT   19 50 33.3   -29 47 18     2.991    3.133   88.8   18.5    79   13.8 
2026-10-20 00:00 UT   19 51 20.1   -29 41 33     3.006    3.134   88.0   18.5    79   13.8 
2026-10-21 00:00 UT   19 52 07.9   -29 35 46     3.021    3.135   87.2   18.5    80   13.9 
2026-10-22 00:00 UT   19 52 56.6   -29 29 59     3.037    3.136   86.4   18.5    80   13.9 
2026-10-23 00:00 UT   19 53 46.1   -29 24 10     3.052    3.137   85.6   18.4    80   13.9 
2026-10-24 00:00 UT   19 54 36.5   -29 18 21     3.067    3.138   84.8   18.4    80   13.9 
2026-10-25 00:00 UT   19 55 27.8   -29 12 30     3.082    3.139   84.0   18.4    80   13.9 
2026-10-26 00:00 UT   19 56 19.9   -29 06 37     3.097    3.140   83.3   18.3    80   13.9 
2026-10-27 00:00 UT   19 57 12.8   -29 00 44     3.112    3.141   82.5   18.3    80   13.9 
2026-10-28 00:00 UT   19 58 06.6   -28 54 49     3.128    3.142   81.7   18.2    80   13.9 
2026-10-29 00:00 UT   19 59 01.1   -28 48 53     3.143    3.143   80.9   18.2    80   13.9 
2026-10-30 00:00 UT   19 59 56.3   -28 42 56     3.158    3.144   80.2   18.1    80   13.9 

    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.